Rolling Bearing Gear and Transmission Patent Landscape
Rolling Bearing Gear and Transmission Patent Landscape in 2026
The rolling bearing gear and transmission patent space is dominated by a small cluster of Japanese and European precision-engineering specialists, with NSK Ltd holding the single largest position. The field reached a filing peak in 2020 and has since eased, a pattern consistent with a maturing, consolidating technology domain.
NSK and NTN lead a highly concentrated field
NSK Ltd ranks first among all applicants, followed by NTN Corp and JTEKT Corp. The top five filers collectively account for 53% of the combined patent records held by the hundred largest filers, signalling a field with a tight competitive core.
The gap between the top three Japanese bearing specialists and the broader field is pronounced: NSK, NTN, and JTEKT together outpace all European and Chinese entrants combined in the top-twenty ranking, while Schaeffler Technologies AG & Co KG is the strongest European presence at fourth place.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | NSK Ltd | 274 | |
| 2 | NTN Corporation | 210 | |
| 3 | JTEKT Corporation | 135 | |
| 4 | SCHAEFFLER TECHNOLOGIES AG & CO KG | 77 | |
| 5 | Koyo Seiko Co Ltd | 46 | |
| 6 | Harmonic Drive Systems Inc | 40 | |
| 7 | Toyota Motor Corporation | 23 | |
| 8 | Robert Bosch GmbH | 21 | |
| 9 | Mitsubishi Heavy Industries Ltd | 20 | |
| 10 | Honda Motor Co Ltd | 18 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | IMO Holding GmbH | 17 | |
| 12 | Renault SA | 17 | |
| 13 | SKF AB | 17 | |
| 14 | Safran Transmission Systems | 16 | |
| 15 | ZF Friedrichshafen AG | 16 | |
| 16 | Hangzhou Advance Gearbox Group Co Ltd | 14 | |
| 17 | Scania CV AB | 13 | |
| 18 | Hispano-Suiza SA | 13 | |
| 19 | Hitachi Astemo Ltd | 11 | |
| 20 | INA Walzlager Schaeffler KG | 11 |
This concentration implies that entrants seeking to challenge the leaders face substantial prior-art depth in core gearing and bearing sub-classes; niche or application-specific angles offer more navigable entry paths.
Filing counts for the most recent 18–24 months are subject to publication lag and will increase as pending applications are published; late-period figures should be treated as provisional. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Peak-and-ease filing pattern with a gearing-dominant technology mix
The annual filing trend chart and the IPC technology-composition chart together reveal where activity is concentrated over time and across technical branches.
Annual filing trend
Annual filings rose to a peak in 2020 and have eased since; the multi-year window still reflects a substantive corpus, but the trajectory is past-peak. Figures for 2024–2026 are understated due to publication lag and should not be read as a continuing decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F16H (Gearing & transmissions) and F16C (Shafts, bearings & couplings) dominate the IPC mix by a wide margin, confirming deep prior-art density in the core mechanical sub-classes. Adjacent branches such as H02K (Electric motors & generators), B62D (Vehicles & legged-robot locomotion), and B60K (Vehicle propulsion & drive) hold smaller but meaningful shares, pointing to application-layer integration work.
↗ 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.
Arrangement for directing lubricant to a rolling b…
The present invention relates to an arrangement for supplying lubricant to a rolling bearing (10) which supports a gearwheel (7) on a rotatable shaft (9) in a gearbox. The gearbox has a connecting device (11) by which the gearwheel (7) is applicable in a rotationally locked state in which the gearwheel (7) and the shaft (9) rotate at the same speed, and in… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Motor driving device for vehicle | 145 |
| 2 | Ball screw device with means for maintaining balance | 110 |
| 3 | Motor-driven power steering device | 84 |
| 4 | Oscillatory tooth and needle gear transmitting dev… | 80 |
| 5 | Toroidal type continuously variable transmission | 67 |
| 6 | Arrangement for the rotary actuation of an apparat… | 65 |
| 7 | Electric power steering device | 58 |
| 8 | Belt stretcher unit designed for assembly on a fle… | 58 |
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 competitive structure means for R&D investment
Four structural observations—maturity, concentration, collaboration, and geography—frame where the realistic white space lies and what barriers a new entrant would face.
Past-peak field with selective pockets of new activity
The lifecycle assessment classifies this field as Decline, with annual filings having eased back from the 2020 peak. On a multi-year basis the corpus remains substantial, but the downward drift in recent annual volumes indicates the core mechanical design space is largely claimed. New R&D investment is most defensible in application-specific integrations—electrified drivetrains, robotics joints, wind turbine gearboxes—rather than in foundational bearing-gear geometry.
Lifecycle: DeclineTop-tier locked up; challenger path runs through application niches
The top five filers account for 53% of the combined patent records among the hundred largest filers, and the top three are all Japanese bearing specialists with overlapping claims in F16H and F16C. Any challenger seeking freedom-to-operate in core gearing will need to invest heavily in design-arounds or license. Entering via under-served application verticals—such as legged-robot locomotion or EV drive integration—presents a lower barrier.
High concentrationCo-filing is modest and supplier–OEM pairings dominate
The most active co-filing pairs are NSK (Nihon Seiko) with Toyota Motor Corporation (3 joint filings), NTN Corp with individual inventors Tomohisa Uozu and Minoru Suzuki (3 each), and Harmonic Drive Systems with Toshiba Corporation (3). Koyo Seiko co-filed with Mitsubishi Motors and with NOK Megurasutikku. These pairings reflect established Japanese supplier–OEM and supplier–electronics-company relationships rather than open ecosystem collaboration, suggesting few cross-border or cross-sector co-development pathways currently exist.
Supplier-OEM pairsChina and Japan are the primary filing offices; US and EPO are secondary
China leads as the top jurisdiction by patent records, followed closely by Japan, with Europe (EPO) and the United States as secondary destinations. Germany, South Korea, and France round out the next tier. This distribution means that protection strategies must prioritise East Asia, while European and North American filings serve as complementary coverage rather than primary battlegrounds. Emerging markets such as India and Brazil show sparse coverage, leaving potential freedom-to-operate in those regions.
East Asia–dominantGo 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 |
|---|---|---|
| NSK Ltd | Toyota Motor Corporation | 3 |
| NTN Corporation | Tomohisa Uozu | 3 |
| NTN Corporation | Minoru Suzuki | 3 |
| Harmonic Drive Systems Inc | Toshiba Corporation | 3 |
| NSK Ltd | Masashi Yokoyama | 2 |
| NTN Corporation | Isuzu Motors Ltd | 2 |
| Koyo Seiko Co Ltd | Mitsubishi Motors Corporation | 2 |
| Koyo Seiko Co Ltd | NOK MEGURASUTIKKU KK | 2 |
| JTEKT Corporation | Forbes Co Ltd | 2 |
| NSK Ltd | Toshiro Toyoda | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
NSK and NTN dominate core gearing; Schaeffler is the leading European challenger
The top applicants split into a Japanese tier—NSK, NTN, JTEKT, and Koyo Seiko—with deep breadth across F16H and F16C sub-classes, and a European challenger tier led by Schaeffler Technologies. All major players show new-entrant momentum signals in the most recent period, consistent with filings still being published.
NSK Ltd
NSK Ltd holds 274 patent records, the largest position in the ranking. Its technology emphasis spans F16H 15 and F16H 57 (gearing sub-classes) and F16C 33 (shafts and bearings), indicating broad coverage across both the gear geometry and the bearing interface layers. Momentum data shows a new-entrant signal in the recent window, consistent with late-stage publication of pending filings rather than a sudden strategic shift.
274 patent recordsSchaeffler Technologies AG & Co KG
Schaeffler Technologies AG & Co KG holds 77 patent records, ranking fourth overall and serving as the strongest European presence. Its focus clusters in F16H 57 (gearing assemblies), F16C 33, and F16H 1, a mix that mirrors the Japanese leaders’ core claims but with a stronger transmission-assembly orientation. Its momentum signal also reads as new entrant in the recent period, reflecting publication lag. Robert Bosch GmbH, at 21 patent records, diverges by incorporating H02K 7 (electric motors) alongside gearing classes, signalling an electrification overlay that differentiates it from pure bearing specialists.
77 patent records| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| NSK Ltd | 11 | ▲ new entrant |
| NTN Corporation | 9 | ▲ new entrant |
| JTEKT Corporation | 6 | ▲ new entrant |
| Schaeffler Technologies AG & Co KG | 15 | ▲ new entrant |
| Harmonic Drive Systems Inc | 2 | ▲ new entrant |
| Robert Bosch GmbH | 8 | ▼ -20% |
Under-served adjacent branches worth monitoring
Several IPC branches adjacent to the dominant F16H/F16C core show relatively low patent-record shares. These are observations of relative sparsity; only those with plausible technical value and a realistic entry path are framed as potential opportunities.
H02K · Electric motors & generators integrated with bearing-gear systems
H02K holds a 4% share of branch records—sparse relative to F16H’s dominance—yet the integration of electric motors with precision gear and bearing assemblies is central to EV drivetrains and servo robotics. The technical value is high and the entry path is realistic for organisations already active in motor or inverter development who wish to extend claims into the mechanical interface layer. This remains an observation of relative sparsity; confirming a viable filing position requires freedom-to-operate analysis.
Search this in Eureka →G01M · Testing, machine balance, and structural diagnostics for bearing-gear systems
G01M (Testing machine and structure balance) accounts for roughly 1% of branch records, the lowest share among the whitespace candidates. Condition monitoring, vibration-based diagnostics, and in-line quality testing of gear-bearing assemblies are growing requirements in wind turbines, industrial robots, and EV axles. Sparse coverage suggests the intersection of structural health monitoring with rolling bearing gear systems has not attracted concentrated patent activity, making it a potentially navigable space for organisations with sensing or AI-based diagnostics capabilities.
Search this in Eureka →How leading applicants differ by technology sub-class emphasis
Strength of each leader across the main technology routes.
| Player | F16H 57 · Gearing & transmissions | F16H 1 · Gearing & transmissions | F16C 33 · Shafts, bearings & couplings | F16C 19 · Shafts, bearings & couplings | F16C 35 · Shafts, bearings & couplings |
|---|---|---|---|---|---|
| NTN Corporation | Strong · 119 | Strong · 110 | Strong · 92 | Strong · 80 | Emerging · 15 |
| NSK Ltd | Strong · 102 | Strong · 76 | Strong · 105 | Strong · 88 | Moderate · 27 |
| JTEKT Corporation | Strong · 57 | Strong · 38 | Strong · 46 | Strong · 45 | Moderate · 16 |
| Koyo Seiko Co Ltd | Strong · 58 | Strong · 42 | Moderate · 28 | Moderate · 22 | Moderate · 27 |
| Schaeffler Technologies AG & Co KG | Strong · 58 | Moderate · 16 | Moderate · 18 | Moderate · 13 | Emerging · 6 |
| Harmonic Drive Systems Inc | Absent | Strong · 35 | Moderate · 12 | Absent | Absent |
| Scania CV AB | Strong · 12 | Absent | Strong · 12 | Absent | Strong · 10 |
Frequently asked questions
The analysis covers 645 patent families in scope for rolling bearing gear and transmission technology.
NSK Ltd holds the largest position with 274 patent records in the top-100 applicant ranking, ahead of NTN Corp at 210 and JTEKT Corp at 135.
The field is classified as Decline: annual filings peaked in 2020 and have eased since. The multi-year corpus remains substantial, but the directional trend is past-peak rather than actively growing.
China is the lead filing office by patent records, followed by Japan. Europe (EPO) and the United States are the next most significant destinations. Germany, South Korea, and France form a secondary tier.
H02K (Electric motors & generators) and G01M (Testing and structural diagnostics) show relatively low branch shares—4% and 1% respectively—adjacent to the dominant F16H/F16C core. Both have plausible technical value in electrified drivetrains and condition-monitoring applications, though a full freedom-to-operate analysis is needed before treating them as confirmed opportunities.
The most active co-filing pairs involve NSK (Nihon Seiko) with Toyota Motor Corporation, NTN Corp with individual inventors Tomohisa Uozu and Minoru Suzuki, and Harmonic Drive Systems with Toshiba Corporation—each with 3 joint filings. These reflect established Japanese supplier–OEM and supplier–electronics-company relationships.
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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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