Rolling Bearing Additive Manufacturing Patent Landscape
The rolling bearing additive manufacturing patent space is heavily concentrated, with SKF and a small group of established bearing and aerospace OEMs controlling the majority of activity among the top filers. Annual volume has eased from its 2019 peak, placing the field in a post-peak maturity phase, though adjacent branches such as powder metallurgy and polymer shaping remain comparatively under-protected.
SKF leads a concentrated field with a clear tier gap below the top two
AB SKF holds the top position among ranked applicants, followed by Bowman International and Schaeffler Technologies. The top five filers together account for 61% of the combined patent records of the hundred largest filers, signaling a tightly held competitive space.
The tier gap between the top two — SKF and Bowman — and the remainder of the field is substantial. Timken, MinebeaMitsumi, and Edwards Limited form a secondary cluster, each with single-digit record counts, while the rest of the ranked applicants hold only a handful of records apiece.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | AB SKF SKF PATENT DEPARTMENT | 31 | |
| 2 | Bowman International Ltd | 22 | |
| 3 | SCHAEFFLER TECHNOLOGIES AG & CO KG | 12 | |
| 4 | The Timken Company | 9 | |
| 5 | MinebeaMitsumi Inc | 8 | |
| 6 | Edwards Limited | 8 | |
| 7 | SKF ENG & RES CENT | 5 | |
| 8 | Safran Aircraft Engines SAS | 4 | |
| 9 | General Electric Company | 4 | |
| 10 | Rolls-Royce plc | 4 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Safran Helicopter Engines | 3 | |
| 12 | Roller Bearing Company of America Inc | 3 | |
| 13 | Nanjing Tech University | 2 | |
| 14 | MTU Aero Engines GmbH | 2 | |
| 15 | ESR Technology | 2 | |
| 16 | SKF Aerospace France SAS | 2 | |
| 17 | Accessible Technologies Inc | 2 | |
| 18 | Leybold AG | 1 | |
| 19 | Hutchinson SA | 1 | |
| 20 | Shanghai Jiao Tong University | 1 |
The leaders’ positions reflect long-standing capability in bearing component design (particularly cages and races), suggesting that incumbents with deep bearing materials expertise have translated their process knowledge into additive manufacturing filings more readily than new entrants.
The most recent 18–24 months of filings are subject to publication lag and are likely under-counted; apparent low volumes in 2024–2026 should not be taken as evidence of further decline. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volume has eased from a 2019 peak; bearing-component codes dominate the technology mix
The annual filing trend and technology composition together reveal a field that saw peak activity around 2019, followed by moderated output, set against a technology mix overwhelmingly anchored in bearing-geometry and shaft-coupling codes.
Annual filing trend
Filings peaked in 2019 and have moderated since; the multi-year window shows an overall negative growth trend of 34% relative to the prior period. Volumes recorded for 2024–2026 are likely under-counted due to patent publication lag and should not be read as a terminal decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F16C (shafts, bearings, and couplings) dominates the branch mix by a large margin, reflecting the application focus on bearing components — particularly cages. B21D (sheet-metal working), B33Y (additive manufacturing), B29C (shaping of plastics), and B22F (powder metallurgy) each appear at much lower frequency, indicating that process-side and materials-side coverage is comparatively sparse.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Bearing component, in particular roller bearing ca…
A method for producing a bearing component, in particular a roller bearing cage (<b>1</b>), including the following steps: a base body (<b>2</b>) which is close to a net shape and which is produced by a stereolithography method or by a 3D-printing method is provided, and the provided base body (<b>2</b>) is coated with a thin, nanocrystalline coating… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Roller bearing cage and method for the production … | 41 |
| 2 | Bearing component, in particular roller bearing ca… | 28 |
| 3 | Coated rolling element bearing | 26 |
| 4 | 一种航空用钛合金复杂构件的增材制造和热处理组织调控方法 | 18 |
| 5 | Bearing cage and bearing means having this type of… | 16 |
| 6 | Bearing cage and bearing means having this type of… | 16 |
| 7 | 轴承构件特别是滚动轴承保持架及其制造方法 | 10 |
| 8 | Bearing cage | 9 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the patent structure means for R&D investment decisions
The combination of a post-peak lifecycle, high concentration, limited collaboration, and US-led jurisdiction coverage shapes both the risk profile and the entry opportunities for new participants.
Post-peak field with easing annual volume
The lifecycle stage is classified as Decline, with annual filings easing back from the 2019 peak. The field is not at an early exploratory stage, meaning foundational bearing-geometry IP is well established. R&D investment is most defensible in differentiated sub-applications — such as aerospace turbine bearings or polymer cage structures — rather than in generic additive manufacturing of standard rolling elements.
Lifecycle: Post-PeakTop five filers hold 61% of the leading-100 applicants’ records
SKF (including its engineering research and aerospace entities), Bowman International, and Schaeffler collectively dominate the corpus. This concentration means that any new entrant filing in the core F16C cage and race space is likely to encounter a dense prior-art landscape owned by well-resourced incumbents. Differentiation through novel materials classes (alloys, coatings) or specific machine architectures may offer a cleaner path.
High ConcentrationCollaboration is minimal and confined within the SKF group
The only co-filing relationships evidenced are between SKF and its SKF China subsidiary (two co-filed records) and between SKF and SKF Aerospace France (one co-filed record). No cross-group or university–industry co-filing is evident at scale. This limited ecosystem activity suggests the field has not yet attracted broad open-innovation partnerships, leaving potential collaborative IP strategies largely unexplored.
Limited EcosystemUS filing dominance; limited Asia-Pacific coverage
The United States leads all jurisdictions in patent records filed, followed by the EPO and WIPO (PCT) routes. The United Kingdom has a meaningful presence, consistent with Bowman International’s and Rolls-Royce’s activity. China holds a comparatively small share despite being a major bearing manufacturing market, suggesting either limited local filings by incumbents or a gap that domestic Chinese applicants have not yet closed at scale.
US-CentricGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| SKF AB | SKF China Ltd | 2 |
| SKF AB | SKF Aerospace France SAS | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
SKF anchors the field; Bowman and Schaeffler pursue distinct technology routes
The top two applicants differ materially in their technology emphasis: SKF concentrates on bearing-component geometry and alloy composition, while Bowman extends its coverage into sheet-metal working processes alongside standard bearing codes.
SKF
AB SKF holds 31 patent records, the largest position in the ranked corpus. Its technology focus is concentrated in F16C 33 (bearing components and cages) and F16C 19 (radial rolling bearings), with secondary coverage in C22C 38 (iron alloys). SKF’s momentum data identifies it as a new entrant in the recent filing window, indicating a fresh or reorganized filing strategy rather than a continuous legacy position.
patent records: 31Bowman International
Bowman International holds 22 patent records and is the only top-ranked applicant with significant coverage in B21D 53 (sheet-metal working for bearing cages), alongside the standard F16C 33 and F16C 19 codes. This process-side emphasis differentiates Bowman from the predominantly geometry-focused filings of SKF and Schaeffler, suggesting a manufacturing-route strategy rather than a purely component-design one.
patent records: 22| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| SKF AB | 16 | ▲ new entrant |
| Schaeffler Technologies AG & Co KG | 2 | ▲ new entrant |
| MinebeaMitsumi Inc | 4 | ▲ new entrant |
| General Electric Company | 1 | ▲ new entrant |
Process-side and materials branches are comparatively under-served
The dominant filing activity sits in bearing-component geometry codes, leaving several adjacent process and materials branches with notably fewer records relative to the overall corpus — worth watching for teams seeking differentiated IP positions.
B33Y · Additive Manufacturing (3D Printing) process claims
Despite the topic being centered on additive manufacturing, the dedicated B33Y classification carries only 14 patent records — roughly 6% of the top-100 applicants’ combined records — compared with the F16C-dominant majority. This suggests most filers are claiming the bearing component itself rather than the AM process or machine configuration. Teams with proprietary AM process know-how (e.g., selective laser melting parameter sets for bearing steels or in-process inspection) may find relatively sparse prior art in this branch and a technically credible entry path.
Search this in Eureka →B22F · Powder Metallurgy for bearing materials
B22F (powder metallurgy) appears in only 9 patent records — roughly 4% of the leading-100 applicants’ combined records. Given that powder-bed fusion and directed energy deposition processes for bearing steels and ceramics are technically central to AM bearing production, the sparse B22F coverage points to an under-protected materials-processing frontier. Organisations with expertise in bearing-grade powder characterisation, sintering parameters, or post-processing heat treatments could build a differentiated position here with plausible commercial relevance to aerospace and high-speed spindle applications.
Search this in Eureka →How leaders differ by technology route across bearing component and process codes
Route coverage across the main technology branches in the current evidence set.
| Player | F16C 33 · Shafts, bearings & couplings | F16C 19 · Shafts, bearings & couplings | F16C 43 · Shafts, bearings & couplings | B21D 53 · Sheet-metal working | F16C 41 · Shafts, bearings & couplings |
|---|---|---|---|---|---|
| Bowman International Ltd | Strong · 22 | Strong · 15 | Strong · 13 | Strong · 13 | Absent |
| SKF AB | Strong · 30 | Emerging · 6 | Absent | Emerging · 2 | Absent |
| MinebeaMitsumi Inc | Strong · 8 | Strong · 8 | Absent | Absent | Strong · 7 |
| The Timken Company | Strong · 9 | Moderate · 2 | Strong · 5 | Absent | Absent |
| Schaeffler Technologies AG & Co KG | Strong · 10 | Moderate · 3 | Absent | Absent | Emerging · 2 |
| Edwards Limited | Strong · 8 | Strong · 5 | Absent | Absent | Absent |
Frequently asked questions
The corpus covers 112 patent families in scope across all major jurisdictions, with the United States accounting for the largest share of records filed.
AB SKF holds the top position with 31 patent records among the ranked applicants, ahead of Bowman International with 22 and Schaeffler Technologies with 12.
The field is classified as post-peak (Decline stage), with annual filings easing back from a 2019 peak. The most recent 18–24 months are subject to publication lag and their low volumes should not be read as a confirmed further decline.
The United States leads all jurisdictions in patent records, followed by Europe (EPO), WIPO (PCT), and the United Kingdom. China holds a comparatively smaller share despite its scale as a bearing manufacturing market.
Yes. The dedicated additive manufacturing classification B33Y and the powder metallurgy branch B22F each carry only a small fraction of the corpus’s records, suggesting that process-specific and materials-specific claims are comparatively sparse relative to component-geometry filings under F16C.
Collaboration is minimal. The only co-filing relationships in evidence are between SKF and its SKF China subsidiary (two co-filed records) and between SKF and SKF Aerospace France (one co-filed record). No broad cross-group or university–industry co-filing patterns are apparent.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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