Pseudocapacitor Cycling Stability Patent Snapshot 2026
The pseudocapacitor cycling stability patent space is a small, academically dominated field in a growth phase, with SR University holding the leading position and India accounting for the largest share of filings by jurisdiction. The field is expanding on a multi-year basis, though annual volume eased from its 2023 peak and the most recent filing years remain understated by publication lag.
SR University leads a fragmented, research-institution-dominated field
SR University holds the top position with 4 patent records, followed by a cluster of applicants — including DHARMENDRA, SUTAR KUMAR ALEKHA, Harbin University of Science and Technology, Tongji University, Banaras Hindu University Varanasi, and Rensselaer Polytechnic Institute — each with 2 patent records.
The top five filers account for 40% of the combined total across the ranked applicants visible in this query, a moderate concentration level for a corpus of this size. The absence of large industrial incumbents in the ranking confirms this remains a university- and institute-led research area.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | SR University | 4 | |
| 2 | Dharmendra | 2 | |
| 3 | Sutar Kumar Alekha | 2 | |
| 4 | HARBIN UNIV OF SCI & TECH | 2 | |
| 5 | Tongji University | 2 | |
| 6 | Banaras Hindu University Varanasi | 2 | |
| 7 | Rensselaer Polytechnic Institute | 2 | |
| 8 | Zhejiang University of Technology | 1 | |
| 9 | Nanyang Technological University | 1 | |
| 10 | SHAANXI COAL & CHEM TECH INST | 1 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Nitte University | 1 | |
| 12 | NANJING UNIV OF AERONAUTICS & ASTRONAUTICS | 1 | |
| 13 | QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINES… | 1 | |
| 14 | ADA Technologies Inc. | 1 | |
| 15 | Malaviya National Institute of Technology Jaipur | 1 | |
| 16 | The Regents of the University of Colorado | 1 | |
| 17 | Indian Institute of Technology Hyderabad | 1 | |
| 18 | Ocean University of China | 1 | |
| 19 | Shaanxi Normal University | 1 | |
| 20 | Changzhou Heste Technology Co., Ltd. | 1 |
The leading institutions’ positions are built predominantly on H01G (Capacitors) filings, with some overlap into H01M (Batteries, cells and fuel cells), suggesting research groups are exploring pseudocapacitor cycling stability both as a standalone topic and as part of hybrid energy-storage architectures.
The most recent filing years (2024–2026) should be read cautiously, as publication lag means those counts are materially understated relative to their eventual totals. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Multi-year growth persists, with H01G dominating the technology mix
Annual filing activity and the IPC class distribution together reveal a field that has grown substantially on a three-year basis and is centered almost entirely on capacitor-class patents, with thin coverage in adjacent technology branches.
Annual filing trend
Filings were sparse from 2017 through 2022, then surged in 2023 and again in 2025–2026. The three-year recent window is up 150% versus the prior three-year window, confirming genuine growth-phase momentum. The 2024 trough and 2026 partial figures both reflect publication lag rather than a real contraction.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01G (Capacitors) is visible in the IPC mix, reflecting the core electrochemical focus of the field. H01M (Batteries, cells and fuel cells) is a secondary branch, consistent with research on hybrid pseudocapacitor-battery devices. All remaining branches — B23K, B82Y, H01L, H02M, and H10D — each hold a single patent record, signalling very thin coverage of adjacent enabling technologies.
↗ 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.
Supercapacitor devices having composite electrodes…
Supercapacitors have composite electrodes that include a porous carbonaceous material such as graphene onto which a metal oxide pseudocapacitor material is deposited in the form of nano-scale particles or a nano-scale film. The composite electrodes exhibit excellent specific capacitance, even at high scan rates. (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Supercapacitor devices having composite electrodes… | 57 |
| 2 | A composite material and method of preparation the… | 18 |
| 3 | 一种基于石墨正极和锌负极的混合型超级电容器 | 8 |
| 4 | Supercapacitor devices formed by depositing metal … | 6 |
| 5 | NaOH改性苝酰亚胺/聚苯胺复合电极材料及其容量性能 | 5 |
| 6 | 碳纤维布/聚(3,4-乙烯二氧噻吩)纳米管复合材料及其制备方法 | 4 |
| 7 | 一种耐低温水系质子赝电容器及其制备方法 | 1 |
| 8 | 一种PEDOT/NiO@泡沫镍复合电极材料及其制备方法和应用 | 1 |
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.
SR University
SR University holds 4 patent records, the largest count of any single applicant. Its filings span H01G 11 (Capacitors) and H01M 4 and H01M 10 (Batteries, cells and fuel cells), reflecting a research program that addresses pseudocapacitor cycling stability in both pure and hybrid energy-storage configurations. Momentum data for SR University are not separately reported in the evidence, so trajectory cannot be confirmed beyond its current ranking position.
4 patent recordsIIT BHU Varanasi
Indian Institute of Technology Banaras Hindu University Varanasi enters the ranking as a new entrant with 2 recent patent records, all focused on H01G (Capacitors). Its new-entrant momentum flag indicates recent activity with no prior-window baseline, suggesting the institution is building a fresh position in this topic. Rensselaer Polytechnic Institute and the University of Colorado, which co-filed 2 records together, represent a comparable challenger cluster on the US side.
2 patent records · new entrantFrequently asked questions
The evidence covers 19 patent families in scope. This is a small corpus, consistent with an early-growth research field that has not yet attracted large-scale industrial filing activity.
SR University leads with 4 patent records, ahead of a group of applicants — including DHARMENDRA, SUTAR KUMAR ALEKHA, Harbin University of Science and Technology, Tongji University, Banaras Hindu University Varanasi, and Rensselaer Polytechnic Institute — each holding 2 patent records.
India is the visible jurisdiction, followed by China. WIPO (PCT) and the United States are also represented but with substantially fewer records. This geographic concentration means international freedom-to-operate assessments should prioritize Indian and Chinese patent offices.
The field is in a Growth stage. Recent three-year filings are 150% above the prior three-year window. Annual volume eased from a 2023 peak, and the most recent filing years are understated by publication lag, so the underlying growth trend remains intact on a multi-year basis.
The evidence identifies one co-filing collaboration: the Regents of the University of Colorado and Rensselaer Polytechnic Institute have jointly filed 2 patent records. Both institutions focus on H01G (Capacitors). No other multi-party collaborations are documented in the evidence.
Five IPC branches — B23K (Welding, soldering and brazing), B82Y (Nanotechnology applications), H01L (Semiconductor devices), H02M (Power conversion), and H10D (Semiconductor devices, general) — each hold only a single patent record in this topic, making them the sparsest adjacent branches. B82Y and H02M stand out as technically relevant to cycling stability improvements and system-level integration, respectively.
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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.
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