Roller Cone Bit Design Patents: Who Leads, Where the Gaps Are 2026
Roller Cone Bit Design Patents: Concentration, Filing Trends and White Space
79.8% of all 1,132 records sit with just five assignees — this field is about as concentrated at the top as roller cone bit filings get. Filings peaked in 2017 at 23 and the 2021-to-2024 span shows a 50% decline (8 to 4). 2025 and 2026 figures are still incomplete under the usual publication lag and should not be read as a continued fall.
- 1SMITH INTERNATIONAL INC297
- 2BAKER HUGHES CO263
- 3DRESSER INDUSTRIES INC170
- 4HALLIBURTON ENERGY SERVICES INC142
- 5WEATHERFORDLAMB INC31
See the full roller cone bit design 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 roller cone bit design patents
Who are the leading patent holders in roller cone bit design?
The ranking is concentrated: the leading assignee alone holds 297 of the 1,132 records in scope, and the top five combined hold 903 records, or 79.8% of the field. That leaves a long tail among the remaining ranked assignees, most holding only a handful of records each. Anyone assessing freedom-to-operate in this space should focus first on the leader’s portfolio, since it covers a large share of the occupied claim space before any other filer is considered.
Is patent filing in roller cone bit design still growing?
No — filing peaked in 2017 at 23 records and has since declined, with the last fully comparable span (2021 to 2024) showing a 50% drop from 8 to 4. That said, publication lags filing by roughly 18 months, so the 2025 and 2026 figures in any dataset pulled today will understate real activity and should not be read as evidence of a continuing slide. A fair read is that formal roller cone bit claim activity has cooled from its mid-2010s peak, not that it has stopped.
Which technical sub-areas of roller cone bit design are least claimed?
Earth and rock drilling claims under E21B cover 92.8% of the 1,132 records, but the mechanical sub-systems tied to bearing life sit far lower: F16C (bearings) at 10.1%, F16J (seals) at 4.2%, and F16N (lubrication) at 1.9%. That gap suggests cone offset geometry and insert composition are heavily claimed, while metal face seal design, lubricant reservoir mechanisms and bearing race coatings carry comparatively less claim density relative to the field’s overall size.
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 Roller Cone Bit Design 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.