Reducer & Precision Gearbox Patents: Top Filers & Trends 2026
Reducer and Precision Gearbox Patents: Who Is Filing, and Where the Claim Space Is Still Open
Filing has cooled since its 2023 peak. 90 families published that year against just 32 in 2017, but the run rate has since flattened rather than kept climbing. Filings rose from 32 in 2017 to a peak of 90 in 2023, with 2022 sitting at 80 — a midpoint that shows growth had already levelled off before the peak year, rather than a straight climb. The partial 2026 count of 5 is a publication-lag artefact, not a collapse in filing activity.
- 1HUBEI KEFENG TRANSMISSION EQUIP CO LTD2.0%
- 2JTEKT EUROPE SAS1.1%
- 3陈惠娜1.1%
- 4常州南鹏机械有限公司1.1%
- 5摩多利智能传动(江苏)有限公司1.1%
See the full reducer and precision gearboxes 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 reducer and precision gearbox patents
Who holds the most influential patents on backlash-free cycloidal reducers?
Two of the five most-cited records in this dataset are Korean filings, KR102054257B1 and KR101855712B1, both describing backlash-free cycloidal reducer structures. Their citation counts of 26 and 23 respectively are the highest among recent-generation designs in the set, ahead of most Chinese filings on the same problem. Anyone drafting a new backlash-elimination claim should review these two documents first, since later filings in this space are likely to be examined against them.
Why are almost all precision reducer patents filed in China?
Of 757 families in this dataset, 700 were filed in China compared with 22 in the United States, 12 in South Korea and single digits elsewhere. This reflects where the bulk of precision-reducer manufacturing and component supply chains for robotics and industrial automation are concentrated, and it means the comparable prior art outside China is comparatively thin. A company planning to file only in the US or Europe should still search the Chinese filings closely, since they represent the large majority of relevant prior art.
Is the precision reducer patent field still growing?
Filing activity rose from 32 families in 2017 to a peak of 90 in 2023, but the midpoint year of 2022 already sat at 80, showing growth had flattened before the peak was reached. Counts for 2025 and 2026 appear lower, but publication typically lags actual filing by around eighteen months, so the most recent one to two years understate true activity. Overall the trend reads as flat-to-declining rather than accelerating.
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 Reducer and Precision Gearboxes 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.