Carbon Materials Patents: Top Companies & Filing Trends 2026
Carbon Materials Patents: Who Leads and Where Filing Is Headed
14.7% of all 98,743 records sit with just five assignees, and that concentration only widens slightly to 21.3% across ten — the rest of the field is a long tail of single- and few-filing entrants. Annual filings rose from 929 in 2017 to a peak of 1,482 in 2022, then eased to 1,107 by 2024 — an 18% decline over that three-year span. 2025 and 2026 figures are still filling in due to publication lag and should not be read as a further drop.
- 1LG ENERGY SOLUTION LTD4.5%
- 2PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD4.1%
- 3TOYOTA JIDOSHA KK2.9%
- 4MURATA MFG CO LTD1.6%
- 5PANASONIC HOLDINGS CORP1.6%
See the full carbon materials patent landscape analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions about carbon materials patents
Who holds the most carbon materials patents?
The leading assignee in this dataset holds 4,401 records out of 98,743 in scope, well ahead of the fifth-ranked filer at 1,567 and tenth place at 1,032. Leadership is concentrated among battery and electronics manufacturers, reflecting how much of the corpus falls under battery-chemistry IPC classes. That said, the top ten combined account for only 21.3% of all records, so the majority of filings sit with a long tail of smaller assignees rather than a handful of dominant players.
Is carbon materials patent filing growing or slowing?
Filing rose from 929 records in 2017 to a peak of 1,482 in 2022, then eased to 1,107 by 2024 — an 18% decline over that three-year span. Because publication lags filing by roughly 18 months, the 2025 and 2026 figures in any dataset are still incomplete and should not be read as evidence of a further drop. The honest read is a cooling from an unusually strong 2022 peak, not a retreat from the field.
Which patent classes cover carbon materials the most?
H01M, covering batteries, cells and fuel cells, is by far the most common class, touching 13.5% of all 98,743 records in this corpus. The next largest, C01B for non-metallic elements and inorganic compounds, sits at 4.3%, followed by smaller shares for capacitors, catalysis, ceramics and conductor applications. Because a single record can carry multiple IPC classes, these shares add up to more than 100% and should not be summed into a single total.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Carbon Materials Patent Landscape covering 2015–2026, data cut-off 2026-08-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.