Precise Electrochemical Machining Patents: Leaders & Trends 2026
Precise Electrochemical Machining Patents: Who Leads and Where the Gaps Sit
21.9% concentration at the top. The five leading assignees hold 181 of 827 records in scope — a real lead, but nowhere near control of the field. Filings rose from 24 in 2017 to a peak of 40 in 2019, then eased. The 2021-to-2024 window shows the clearest complete-year comparison: 36 down to 26, a 28% decline. Years after 2024 are still filling in under publication lag and should not be read as continuing that decline.
- 1OLIN CORP5.4%
- 2NOVELLUS SYSTEMS INC4.7%
- 3GENERAL ELECTRIC CO4.0%
- 4AGORA ENERGY TECH LTD4.0%
- 5FORM ENERGY INC3.7%
See the full precise electrochemical machining 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 this landscape
Who holds the most patents in precise electrochemical machining?
The leading assignee in this dataset holds 45 of the 827 records in scope, ahead of the fifth-ranked assignee at 31 and the tenth at 17. The top five assignees combined hold 21.9% of all 827 records, and the top ten hold 35.2%. That leaves the majority of the corpus spread across a long tail of smaller filers, so no single company controls the field outright.
Is electrochemical machining patent activity growing or slowing?
Filing peaked in 2019 at 40 records and has since eased; the clearest complete-year comparison shows a drop from 36 filings in 2021 to 26 in 2024, a 28% decline. Years after 2024 will look artificially low because publication typically lags actual filing by around 18 months, so those figures are still filling in rather than showing a genuine further drop. Read the 2021-2024 trend as the real signal, not the raw tail end of the chart.
What is the difference between electrochemical machining and electroplating patents in this dataset?
The two fields overlap heavily in the patent literature because they share electrolyte chemistry and tooling concepts. C25D, the electroplating and electroforming class, covers 29.0% of the 827 records, while B23H, electro/chemical machining proper, covers 26.1% — the two largest classes in the corpus. A search limited to only one of these classes will miss a substantial share of relevant prior art in the other.
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 Precise Electrochemical Machining covering 2015–2026, data cut-off 2026-07-31. 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.