In this dataset, a record only qualifies if its claims or description explicitly address cycling stability, capacitance retention, bending durability or self-discharge suppression, not just supercapacitor construction generally. The IPC scope is anchored on H01G11/26 and H01G11/32, the electric double-layer and hybrid capacitor construction subclasses. This means a general electrode-material patent that never discusses degradation or retention over cycling would not appear here, even if it is used in a micro-supercapacitor.

The data shows 12 filings in 2018 against just 1 at the 2022 midpoint, a clear plateau rather than sustained growth. Some of the apparent recent decline is a publication-lag artefact: filings typically take around 18 months to publish, so the last one to two years in any trend chart will always look lower than they eventually turn out to be. But the multi-year gap between 2018 and 2022 predates that lag window and reflects a genuine slowdown in this narrowly-scoped claim area.

The most-cited record in this corpus is a yarn-type micro-supercapacitor fabrication method with 18 citations, well ahead of on-chip silicon-based approaches and elastic fiber electrode filings that follow it. Named assignees in the tracked ranking include University of South-Eastern Norway, Hanyang University, Université Marie et Louis Pasteur, Northwestern University, Carnegie Mellon University and Jain Deemed to be University, though all show zero filings in the most recent tracked year. No single organisation holds a dominant, actively-growing position based on this evidence.

Classification data shows every record sits in H01G, but adjacent classes are thin: H10N appears in 4 of 21 records, while C01B, H01B and H01M appear in only 2 each, and B33Y and C09D appear once each. That means additive-manufactured electrode structures, ink-based conductive coatings and self-discharge suppression circuitry are documented as concepts but not built out into dense claim families. A first-filer with a specific, well-drafted claim in one of these adjacencies would face comparatively little competing art in this corpus.

US11101082B2 claims an on-chip supercapacitor electrode built from one-dimensional silicon nanostructures coated first with titanium nitride and then with manganese dioxide, plus the method of building that electrode on a silicon substrate. It was granted to University of South-Eastern Norway on 2021-08-24. Anyone working on silicon-based on-chip supercapacitor electrodes with a similar dual-layer coating structure should review its claim scope directly, since it sits in the same IPC space as several other highly-cited records in this corpus.