Pseudocapacitive Materials (MnO2/MXene) Patent Snapshot
The pseudocapacitive materials (MnO2/MXene) patent space is a relatively compact, growth-stage field dominated by a handful of corporate and academic filers concentrated in capacitor-device applications. LG Chem leads among ranked applicants, with the United States as the primary filing jurisdiction, and recent multi-year activity is well above earlier levels despite annual volume having eased from its 2018 peak.
LG Chem leads a fragmented but concentrated field with mixed corporate and academic participation
LG Chem holds the top position among ranked applicants, followed by ADA Technologies and Rensselaer Polytechnic Institute. The top five filers account for 35% of the combined activity of the ranked applicants visible in this query, indicating moderate concentration in a still-small corpus.
A clear tier gap separates LG Chem and ADA Technologies from the rest of the field. Below them, most participants hold only one or two patent records, reflecting a broad but shallow second tier composed largely of universities and individual inventors.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | LG Chem Ltd. | 6 | |
| 2 | ADA Technologies Inc. | 4 | |
| 3 | Rensselaer Polytechnic Institute | 3 | |
| 4 | DHARMENDRA | 2 | |
| 5 | Southwest University | 2 | |
| 6 | Nesscap Co. Ltd. | 2 | |
| 7 | SUTAR KUMAR ALEKHA | 2 | |
| 8 | Intel Corporation | 2 | |
| 9 | Aquion Energy Inc. | 2 | |
| 10 | Banaras Hindu University Varanasi | 2 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | National Chiao Tung University | 2 | |
| 12 | ANILAEI | 1 | |
| 13 | Nanyang Technological University | 1 | |
| 14 | M MALARVIZHI | 1 | |
| 15 | G VIJAYAKUMAR | 1 | |
| 16 | Purdue Research Foundation | 1 | |
| 17 | Maxwell Technologies Korea Co. Ltd. | 1 | |
| 18 | KOREA ADVANCED INST OF SCI & TECH | 1 | |
| 19 | Xi’an Jiaotong-Liverpool University | 1 | |
| 20 | CHRISMA ROSE BABU | 1 |
LG Chem’s lead, concentrated in H01G capacitor classifications, signals that commercial supercapacitor device development — rather than fundamental materials science — is the primary driver of proprietary claims. Academic filers such as Rensselaer Polytechnic Institute and Southwest University represent the research frontier.
The most recent 18–24 months of data are subject to publication lag and likely undercount actual filing activity; the apparent slowdown in 2025–2026 should not be read as a real decline. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Multi-year growth is robust, though filings have eased from the 2018 spike; capacitor applications dominate the technology mix
The annual filing trend and technology composition charts together show where momentum sits and which IPC branches capture the bulk of innovation activity in this space.
Annual filing trend
A sharp spike occurred in 2018, after which annual volume fell and has since recovered gradually through 2024–2025. The recent three-year window sits well above the prior three-year window (250% growth), confirming multi-year expansion even as the 2018 peak has not been matched. The 2025–2026 data points are understated due to publication lag and should not be interpreted as a plateau.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01G (Capacitors) is overwhelmingly visible, reflecting the direct-device orientation of most filers. H01M (Batteries, cells and fuel cells) is a secondary branch, pointing to hybrid energy-storage applications. Nanotechnology (B82Y) and several manufacturing and materials-process branches appear with minimal representation, marking the boundaries of current patent activity.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Metal oxide electrochemical pseudocapacitor having…
Disclosed are a conducting polymer coated electrode of a metal oxide electrochemical pseudocapacitor having an improved performance and a method of manufacturing the same. The electrode includes a current collector and an active material coated on the current collector. The active material includes metal oxide and is coated with a conducting polymer on a… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Supercapacitor devices having composite electrodes… | 57 |
| 2 | Metal oxide electrochemical pseudocapacitor having… | 45 |
| 3 | Supercapacitor Devices Having Composite Electrodes… | 34 |
| 4 | 一种CoNiO2/MXene复合材料及其制备方法和应用 | 26 |
| 5 | High energy density hybrid pseudocapacitors and me… | 23 |
| 6 | Pseudocapacitive electrodes and methods of forming | 20 |
| 7 | A composite material and method of preparation the… | 18 |
| 8 | 一种超级电容器电极材料及制备方法 | 13 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
LG Chem
LG Chem holds the largest position in the ranked corpus with 6 patent records, all concentrated in H01G capacitor classifications with a secondary claim in B82Y nanotechnology applications. This focus on device-level capacitor IP suggests a commercial supercapacitor product orientation. Applicant-level momentum data is not available for this corpus.
families: 6ADA Technologies
ADA Technologies holds 4 patent records, focused on H01G capacitor claims with additional coverage in H01G9 (electrolytic capacitors) and H01M12 (hybrid cells), indicating a broader energy-storage application scope than LG Chem. This cross-category filing strategy positions ADA Technologies as a challenger bridging supercapacitor and battery-hybrid applications. Applicant-level momentum data is not available for this corpus.
families: 4Frequently asked questions
The evidence corpus contains 24 patent families in scope for this topic.
LG Chem holds the top position among the ranked applicants with 6 patent records, concentrated in H01G capacitor classifications.
The field is classified as Growth. The recent three-year filing window is 250% above the prior three-year window, confirming multi-year expansion, though annual volume has eased from its 2018 peak. The most recent data points are also understated by publication lag.
The United States leads in filing jurisdiction, followed by China and India, with South Korea, EPO, and WIPO (PCT) each showing smaller volumes.
Yes. The most active co-filing partnership in evidence is between the Board of Regents of Colorado State University and Rensselaer Polytechnic Institute, which have co-filed 3 patent records together.
C25B (electrolytic production of compounds), C30B (crystal growth), B23K (welding and joining), and H02M (power conversion) each appear with only 1 patent record, making them the sparsest branches adjacent to the visible H01G capacitor cluster.
Built on Patsnap Open Platform
This report’s underlying patent dataset — filings, assignees, technology clusters — is open for developers via MCP and REST API. Free to start, 10,000 credits, no credit card required.
Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.