Electrochemical Succinic Acid Production — PatSnap Eureka
Electrochemical Succinic Acid Production: Patent & Innovation Intelligence
From foundational electrolysis routes to microbial electrosynthesis powered by renewable electricity — explore the full technology landscape, active IP positions, and emerging white spaces in electrochemical succinic acid production, derived from patent and literature analysis via PatSnap Eureka.
Innovation Timeline: 1924–2024
Four distinct eras of electrochemical succinic acid innovation from foundational electrolysis to microbial electrosynthesis.
Four Mechanistic Pathways to Electrochemical Succinic Acid
The electrochemical succinic acid landscape spans historically distinct approaches — from direct electrolysis of chemical precursors to cutting-edge microbial electrosynthesis systems driven by renewable electricity and CO₂ fixation.
Direct Electrochemical Synthesis from Chemical Precursors
The historically earliest approach involves electrochemical oxidation or reduction of chemical precursors — lactones, furfuryl derivatives, maleic acid — at insoluble or catalytic electrodes in acidic electrolytes. WIPO records confirm these foundational routes span US filings from 1924 to 1963. All direct electrolysis patents in this cluster are now inactive. Literature from KU Leuven (2014) confirms electrocarboxylation — CO₂ fixation onto unsaturated substrates — as a scalable synthetic route, citing reactor design and electrode selection as key sustainability levers.
All US patents inactive — IP white space opportunityFermentation with Electrochemical Downstream Recovery
The most commercially developed approach in this dataset: anaerobic microbial fermentation of sugars to succinate salt, followed by electrodialysis concentration and water-splitting electrodialysis to convert succinate salt to free succinic acid. Michigan Biotechnology Institute's 1990 EP patent established the foundational electrodialysis recovery process. PURAC Biochem BV (2019, EP, active) refined a near-zero-waste loop via magnesium succinate acidification with HCl and thermal decomposition to recover HCl. Mitsubishi Chemical Corporation (2020, EP, active) introduced controlled stirring power (0.4–3 kW/m³) in crystallization tanks for continuous crystal recovery.
Dominant active EP patent cluster — design-around requiredElectrochemical pH-Shift Crystallization
A focused sub-cluster from RWTH Aachen University addresses the waste-salt problem endemic to conventional downstream acid recovery. In conventional processes, neutralization of fermentation broth generates large quantities of waste calcium or magnesium salts. Electrochemical pH-shift crystallization uses electrochemical protonation to shift pH and induce supersaturation for crystal nucleation without chemical inputs. The 2022 RWTH Aachen prototype study evaluates supersaturation, energy consumption, and electrochemical protonation efficiency, demonstrating feasibility at prototype scale with minimal chemical waste.
Active publication, limited patent coverage — filing opportunityMicrobial Electrosynthesis (MES) & Electro-Fermentation
The most rapidly evolving cluster involves engineering bacteria to accept electrons from cathodes to drive reductive succinate biosynthesis — either from sugars or directly from CO₂. Nanjing University of Science and Technology (2019) engineered E. coli T110 expressing MtrABC, FccA, and CymA from Shewanella oneidensis MR-1 to reduce fumarate to succinate, achieving 1.10 mol/mol glucose yield — a 1.6-fold improvement over the parent strain. Jiangnan University (2022–2023, CN, active) applies nanoscale zero-valent iron (40–100 nm) to MES cathodic media, achieving up to 16-fold improvements in acetic acid production from CO₂. Explore patent landscape analysis for MES upstream technology monitoring.
CN filings accelerating — monitor for FTO implicationsPatent Activity, Jurisdiction Distribution & Technology Maturity
Key quantitative signals from the electrochemical succinic acid patent and literature dataset, spanning 1924–2024.
Active vs. Inactive Patents by Technology Cluster
Direct electrolysis (Cluster 1) patents are entirely inactive; Fermentation+Electrodialysis (Cluster 2) holds the most active EP positions.
Active Patent Positions by Jurisdiction
EP jurisdiction holds the largest active portfolio; CN leads in most recent MES filings (2022–2023); all US patents are inactive.
MES Performance: Key Quantitative Results
Documented yield and productivity improvements from microbial electrosynthesis engineering versus control conditions.
Technology Readiness by Cluster
Relative commercialization maturity of each cluster based on patent status, literature evidence, and prototype demonstrations in this dataset.
Who Holds the Active IP — and Where Innovation Is Accelerating
Among retrieved active patents, Japanese corporations and European specialty chemical companies dominate the EP portfolio, while Chinese institutions lead the most recent MES filings.
EP Dominance, CN Acceleration, US White Space
Within this dataset, Mitsubishi Chemical Corporation holds 2 active EP patents covering method of producing succinic acid (2017) and method for production at high temperatures (2018). Ajinomoto Co., Inc. holds 2 EP filings (one active, one inactive, both 2017). PURAC Biochem BV holds 1 active EP patent (2019) covering a near-zero-waste downstream loop. Myriant Corporation holds 1 active EP patent (2022) targeting commercial-scale polymer applications. Entrants targeting European markets must design around these positions or license — freedom-to-operate analysis is essential.
China is the most active jurisdiction for recent bioelectrochemical organic acid innovation. Jiangnan University holds 2 active CN patents (2022 and 2023) covering nanoscale zero-valent iron-assisted MES of organic acids from CO₂. The 2023 re-filing indicates active IP prosecution and scope expansion. The concentration of academic output from Chinese Academy of Sciences, Nanjing institutions, and Tianjin University signals an accelerating innovation pipeline — R&D teams should monitor CN filings closely for upstream platform technology that may affect global freedom-to-operate.
Germany accounts for the densest cluster of active academic research: RWTH Aachen University leads in electrochemical downstream processing, biocatalytic CO₂ routes, and electrochemical cross-coupling. The Technical University of Denmark (2022) identified anionic exchange membrane electrolysis as a critical parameter set for separating succinic acid from fermentation broth. Track these institutions via PatSnap's competitive intelligence tools to anticipate filing activity before publications appear.
All US patents in this dataset are inactive (Yoshitaro Takayama 1944; Danciger Oil & Refineries 1947; Esso Research and Engineering 1963; Barrett Company 1924). A contemporary filing covering direct electroreduction of maleic acid or fumaric acid with modern electrocatalysts at commercially relevant current densities would likely face low prior-art density in active patent space — a significant strategic opportunity documented by the EPO's green technology patent frameworks.
Active Patents in This Dataset by Assignee
| Assignee | Jurisdiction | Year | Technology Focus | Status |
|---|---|---|---|---|
| Mitsubishi Chemical Corporation | EP | 2017 | Method of producing succinic acid — fermentation strain & process | Active |
| Mitsubishi Chemical Corporation | EP | 2018 | Method for production of succinic acid at high temperatures | Active |
| Mitsubishi Chemical Corporation | EP | 2020 | Controlled stirring power (0.4–3 kW/m³) crystallization | Active |
| Ajinomoto Co., Inc. | EP | 2017 | Process for production of succinic acid — strain engineering | Active |
| PURAC Biochem BV | EP | 2019 | Mg succinate acidification + HCl recovery near-zero-waste loop | Active |
| Myriant Corporation | EP | 2022 | Facilitated diffusion for sugar import — polymer applications | Active |
Five Strategic Directions Shaping the Next Innovation Cycle
Based on the most recent filings and publications in this dataset, these directions signal where R&D investment and IP activity are converging.
MES with Nanoscale Mediators
Jiangnan University's 2022 and 2023 CN patents introduce nanoscale zero-valent iron (40–100 nm) as a non-lethal mediator in MES cathodic media, achieving up to 16-fold improvements in C2–C6 organic acid production from CO₂. Extension of this architecture toward succinic acid (a C4 acid) is a proximate research direction. The 2023 re-filing indicates active IP prosecution and scope expansion.
Electrochemical pH-Shift Crystallization
RWTH Aachen's 2022 prototype evaluation establishes electrochemical pH-shift crystallization as a near-commercial technology for succinic acid recovery, eliminating waste-salt generation. Integration of this module into existing bio-succinic acid production lines represents a near-term deployment pathway with active publication but limited patent coverage in this dataset.
Electro-Fermentation for Redox-Constrained Strains
Literature from Tokyo University of Pharmacy (2022) surveys electro-fermentation broadly as a solution to redox imbalance in fermentation. The Nanjing University of Science and Technology (2019) work on electroactive E. coli for succinic acid MES is the most direct demonstration. Engineering of non-model organisms (Vibrio natriegens, Issatchenkia orientalis) with electro-activity modules is an expected near-term direction.
Integrated CO₂ Fixation & Succinic Acid Production
The Nanjing Tech University review (2023) identifies micro-nano bubbles, CO₂ adsorption materials, and metabolic engineering of CO₂ fixation enzymes as key strategies for improving CO₂ utilization efficiency in bio-succinic acid production — converging CO₂ capture and chemical synthesis into a single bioelectrochemical platform aligned with carbon credit frameworks.
Succinic Acid as a C4 Platform Chemical: Downstream Markets
Succinic acid serves as a precursor across multiple high-value industrial domains, with the bio-based and electrochemical routes increasingly positioned to displace petrochemical production.
Bio-Based Chemicals & Biodegradable Plastics
Succinic acid is a monomer for PBS (polybutylene succinate) and PA 5.4 nylon. The co-production of cadaverine and succinic acid in E. coli (Nanjing Tech University, 2022) specifically targets PA 5.4 nylon manufacturing. Myriant Corporation's active EP patent (2022) explicitly targets commercial-scale production for downstream polymer applications. Michigan State University's bioeconomy review (2017) also documents deicing agent applications from bio-succinic derivatives. Explore PatSnap's chemicals solutions for polymer IP landscape analysis.
PBS, PA 5.4 nylon, deicing agentsFood, Flavor & Pharmaceutical Intermediates
Historical electrolytic patents (Takayama, 1944) reference succinic acid as a condiment for Japanese sake and food. Modern succinic acid is used as a flavor enhancer and pharmaceutical stabilizer. The broad industrial significance is corroborated by Rice University (2005) literature: butanediol, tetrahydrofuran, pyrrolidone, solvents, paints, and fuel additives are documented downstream products. Life sciences IP intelligence can map pharmaceutical succinic acid patent positions.
Flavor enhancer, pharma stabilizer, sake condimentSolvent & Fine Chemical Synthesis
RWTH Aachen (2019) demonstrates electrochemical cross-coupling of biogenic diacids for fuel production, and electrocatalytic upgrading of itaconic acid to methylsuccinic acid — demonstrating succinic acid and its analogs as substrates for electrochemical valorization into higher-value products. N-vinyl-2-pyrrolidone (NVP) synthesis from succinic acid (RWTH Aachen, 2022) shows a 50% reduction in CO₂-equivalent emissions versus incumbent fossil routes when the right catalyst is employed.
NVP synthesis, fuel production, methylsuccinic acidRenewable Energy & CO₂ Utilization
The MES cluster (Nanjing University of Science and Technology, 2019; Jiangnan University, 2022–2023) explicitly positions electrochemical succinate production as a CO₂ utilization technology, coupling renewable electricity with greenhouse gas capture. The convergence of CO₂ utilization policy and succinic acid's role as a C4 platform chemical creates a favorable regulatory and funding environment. Processes documenting CO₂ utilization efficiency are increasingly eligible for green chemistry incentives and carbon credit frameworks. The IEA tracks CO₂ utilization technology deployment globally.
CO₂ fixation, renewable electricity coupling, carbon creditsMap succinic acid application domain patents with AI precision
PatSnap Eureka identifies cross-domain patent positions across polymers, pharma, and CO₂ utilization in a single search.
Electrochemical Succinic Acid Production — key questions answered
Within this dataset, succinic acid production technologies span four broad mechanistic categories: (1) classical direct electrolysis of chemical precursors (maleic acid, butyrolactone, tetrahydrofurfuryl alcohol); (2) microbial fermentation coupled with electrochemical downstream processing (electrodialysis, electrochemical pH-shift crystallization); (3) microbial electrosynthesis (MES) and electro-fermentation, where electrochemical energy directly modifies intracellular redox states or drives CO₂ fixation; and (4) purely biological fermentation with engineered microorganisms, which overlaps substantially with electrochemical downstream recovery.
Among retrieved active patents, Japanese corporations (Mitsubishi Chemical, Ajinomoto) and European specialty chemical companies (PURAC Biochem, Myriant) dominate the active patent portfolio for fermentation-based succinic acid with electrochemical downstream processing. Chinese institutions dominate the most recent (2022–2023) MES-related patent filings, signaling a geographic shift toward bioelectrochemical innovation in China.
The most recent and rapidly evolving cluster involves engineering bacteria to accept electrons from cathodes to drive reductive succinate biosynthesis — either from sugars or directly from CO₂. This merges synthetic biology with electrochemical engineering. Nanjing University of Science and Technology (2019) engineers E. coli T110 expressing MtrABC, FccA, and CymA from Shewanella oneidensis MR-1 to accept electrons from cathodes and reduce fumarate to succinate, achieving 1.10 mol/mol glucose yield with a carbon concentration mechanism, a 1.6-fold improvement over the parent strain.
All direct electrolysis patents in this dataset (US jurisdiction, 1924–1963) are inactive and expired. A contemporary filing covering direct electroreduction of maleic acid or fumaric acid with modern electrocatalysts (e.g., single-atom catalysts, gas diffusion electrodes) at commercially relevant current densities would likely face low prior-art density in active patent space. Downstream processing is also a critical and underpatented value-creation zone: electrochemical pH-shift crystallization (RWTH Aachen, 2022) and electro-membrane extraction (Technical University of Denmark, 2022) represent engineering-stage technologies with active publication but limited patent coverage visible in this dataset.
A focused sub-cluster emerging from RWTH Aachen University addresses the waste-salt problem endemic to conventional downstream acid recovery. In conventional processes, neutralization of fermentation broth generates large quantities of waste calcium or magnesium salts. Electrochemical pH-shift crystallization uses electrochemical protonation to shift pH and induce supersaturation for crystal nucleation without chemical inputs. The 2022 RWTH Aachen University prototype study evaluates supersaturation, energy consumption, and electrochemical protonation efficiency for succinic acid crystallization and demonstrates feasibility at prototype scale.
The MES cluster (Nanjing University of Science and Technology, 2019; Jiangnan University, 2022–2023) explicitly positions electrochemical succinate production as a CO₂ utilization technology, coupling renewable electricity with greenhouse gas capture. The Nanjing Tech University review (2023) identifies micro-nano bubbles, CO₂ adsorption materials, and metabolic engineering of CO₂ fixation enzymes as key strategies for improving CO₂ utilization efficiency in bio-succinic acid production — converging CO₂ capture and chemical synthesis into a single bioelectrochemical platform.
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References
- Electrolytic production of succinic acid — Yoshitaro Takayama, 1944, US
- Electrolytic production of succinic acid from butyrolactone — Danciger Oil & Refineries Inc., 1947, US
- Production of succinic acid — The Barrett Company, 1924, US
- Process for preparation of succinic acid — Esso Research and Engineering Company, 1963, US
- A process for the production and purification of succinic acid — Michigan Biotechnology Institute, 1990, AU
- A process for the production and purification of succinic acid — Michigan Biotechnology Institute, 1990, EP
- Method for producing succinic acid — Roquette Freres, 2009, CA
- Method of producing succinic acid — Mitsubishi Chemical Corporation, 2017, EP
- Process for production of succinic acid — Ajinomoto Co., Inc., 2017, EP
- Method for production of succinic acid — Ajinomoto Co., Inc., 2017, EP
- Method for production of succinic acid at high temperatures — Mitsubishi Chemical Corporation, 2018, EP
- Method for manufacturing succinic acid — PURAC Biochem BV, 2019, EP
- Method for producing succinic acid — Mitsubishi Chemical Corporation, 2020, EP
- Method of producing succinic acid using facilitated diffusion for sugar import — Myriant Corporation, 2022, EP
- Method for promoting chain-elongation microbial electrosynthesis of organic acids — Jiangnan University, 2022, CN
- Method for promoting chain-elongation microbial electrosynthesis of organic acids — Jiangnan University, 2023, CN
- Engineering an electroactive Escherichia coli for the microbial electrosynthesis of succinate from glucose and CO₂ — Nanjing University of Science and Technology, 2019
- Evaluation of a Prototype for Electrochemical pH-Shift Crystallization of Succinic Acid — RWTH Aachen University (AVT), 2022
- Variables and Mechanisms Affecting Electro-Membrane Extraction of Bio-Succinic Acid from Fermentation Broth — Technical University of Denmark, 2022
- Succinic Acid: Technology Development and Commercialization — Bioeconomy Institute, Michigan State University, 2017
- Fermentative Succinate Production: An Emerging Technology to Replace the Traditional Petrochemical Processes — Chinese Academy of Sciences, Qingdao Institute of Bioenergy, 2013
- Electrocarboxylation: towards sustainable and efficient synthesis of valuable carboxylic acids — KU Leuven, 2014
- CO₂ to succinic acid – Estimating the potential of biocatalytic routes — RWTH Aachen University, 2018
- Electrocatalytic upgrading of itaconic acid to methylsuccinic acid — RWTH Aachen, 2017
- Electrochemical cross-coupling of biogenic di-acids for sustainable fuel production — RWTH Aachen University, 2019
- Towards Application of Electro-Fermentation for the Production of Value-Added Chemicals From Biomass Feedstocks — Tokyo University of Pharmacy and Life Sciences, 2022
- Catalytic transfer hydrogenation of maleic acid with stoichiometric amounts of formic acid — CSIC, Institute of Catalysis and Petrochemistry, 2020
- Making more from bio-based platforms: LCA and TEA of N-vinyl-2-pyrrolidone from succinic acid — RWTH Aachen University, 2022
- An End-to-end Pipeline for Succinic Acid Production at an Industrially Relevant Scale using Issatchenkia orientalis — University of Illinois at Urbana-Champaign, 2023
- Recent Advancements and Strategies of Improving CO₂ Utilization Efficiency in Bio-Succinic Acid Production — Nanjing Tech University, 2023
- WIPO — World Intellectual Property Organization: Green Technology Patent Data
- EPO — European Patent Office: Sustainable Chemistry Patent Classifications
- IEA — International Energy Agency: CO₂ Utilization Technology Deployment
All data and statistics on this page are sourced from the references above and from PatSnap's proprietary innovation intelligence platform. This landscape is derived from a limited set of patent and literature records retrieved across targeted searches and represents a snapshot of innovation signals within this dataset only.
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