Converter Station Patents: Who Leads, Where the Gaps Are 2026
Converter Station Design and Valve Hall Patents
Concentrated at the top. The five leading assignees hold 78 of 145 records in scope (53.8%), and the top ten hold 110 (75.9%) — a steep drop-off after a small group of repeat filers. Recorded filings peaked at 5 in 2017 and trended down toward 0 in the most recent, partial year. With fewer than four complete years available once publication lag is accounted for, no growth rate can be stated reliably — the honest read is a plateau-then-taper pattern rather than a clean trend line.
- 1CANADIAN LIGHT SOURCE INC31
- 2CAMBRIDGE SEMICONDUCTOR LIMITED21
- 3REDISEM10
- 4POWER INTEGRATIONS INC8
- 5RYAN PAUL8
See the full converter station design and valve hall 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 on converter station and valve hall patents
Who are the leading patent holders in converter station and valve hall design?
Filing activity in this dataset is concentrated: the top five assignees together hold 78 of the 145 records in scope, or 53.8%, and the top ten extend that to 110 records, or 75.9%. The single leading assignee holds 31 records, well ahead of fifth place at 8 and tenth place at 6. Beyond the top ten, the remaining assignees in the 60-company ranking each hold only a handful of records, forming a long tail rather than a broad second tier.
What technology areas dominate converter station patent filings?
Power conversion, captured under IPC subclass H02M, is the single largest category, appearing on 37.9% of the 145 records tracked. Power supply and grid systems (H02J) and spark gap or arc devices (H01T) are comparatively minor at 5.5% and 4.8% respectively. Because a single patent record can carry multiple IPC codes, these percentages add up to more than 100% of the record total, and should be read as coverage shares rather than a strict breakdown.
Is converter station patent activity growing or slowing down?
The recorded trend peaked at 5 filings in 2017 and has trended down toward 0 in the most recent, partial year. That decline should not be read at face value: publication typically lags filing by around 18 months, so the last one to two years in any patent dataset are always undercounted. With fewer than four complete years available after accounting for that lag, a reliable growth rate cannot be calculated from this data.
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 Converter Station Design and Valve Hall 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.