Planetary Gearbox Lubrication & Wear Durability Patent Snapshot
A small, concentrated field dominated by Flender Finland Oy, this niche has plateaued near its 2018 peak with the United States as the leading filing jurisdiction. A handful of new entrants in recent periods signals selective but ongoing commercial interest despite overall mature-stage activity.
Flender Finland Oy leads a tightly held field with new challengers emerging
Flender Finland Oy holds the top position with 7 patent records, roughly twice the count of the nearest rival Mazda Motor Corp at 4 patent records, establishing a clear leadership gap at the head of the ranking.
The top five filers collectively account for 52% of the combined total across the ranked applicants visible in this query, indicating a concentrated visible assignee structure where a small cluster of specialists and automotive OEMs control the bulk of documented inventive activity.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Flender Finland Oy | 7 | |
| 2 | Mazda Motor Corporation | 4 | |
| 3 | The Timken Company | 2 | |
| 4 | SCHAEFFLER TECHNOLOGIES AG & CO KG | 2 | |
| 5 | Honda Motor Co., Ltd. | 2 | |
| 6 | NANJING HIGH SPEED & ACCURATE GEAR GRP | 2 | |
| 7 | RTX Corporation | 2 | |
| 8 | NTN Corporation | 2 | |
| 9 | Mitsuba Corporation | 2 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 10 | Ningbo Fulaige Hydraulic | 1 | |
| 11 | Chongqing Chorus Gear Manufacturing Co., Ltd. | 1 | |
| 12 | ZF Friedrichshafen AG | 1 | |
| 13 | COB Bearings GmbH | 1 | |
| 14 | Wanxiang Qianchao Shanghai Automotive Systems | 1 | |
| 15 | Zhejiang Bosida Gear Co., Ltd. | 1 | |
| 16 | Suzhou Dongling New Materials Technology Co., Ltd. | 1 | |
| 17 | Ruian Vehicle Fitting Factory | 1 |
The leaders’ positions imply that proprietary lubrication architectures and bearing-interface solutions are viewed as defensible technical assets, particularly for automotive transmission and wind-turbine drivetrain applications where gear-system reliability is a differentiating factor.
Activity in the most recent 18–24 months is subject to publication lag and should be treated as under-counted; the corpus covers globally filed patent families. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volume has plateaued and gearing/transmission IPC classes dominate the technology mix
The annual filing trend reveals a field that peaked around 2018 and has since moved sideways, while the IPC composition shows a clear concentration in gearing and transmission classes with a secondary cluster in bearings and couplings.
Annual filing trend
Annual filings reached their high point around 2018, settled to low single-digit counts through 2022, and the most recent years (2023–2026) show reduced counts that partly reflect publication lag rather than a sustained decline — caution is warranted before reading the latest data as a downturn.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F16H (Gearing & transmissions) accounts for the largest share of IPC records, followed by F16C (Shafts, bearings & couplings), confirming that lubrication and wear solutions are primarily embedded within gear-carrier and bearing-interface inventions; F03D (Wind motors) represents a distinct third cluster tied to wind-turbine drivetrain applications.
↗ 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.
Low-play planetary gear mechanism
A low-play planetary gear mechanism for high rotational speeds and low torque transmission and having roller bearings for the parts which rotate within the gear mechanism. The gear mechanism is designed for a long, maintenance-free service life in continuous operation at high drive speeds. To accomplish this, the running surfaces of at least some of the… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Low-play planetary gear mechanism | 25 |
| 2 | Gear carrier flex mount lubrication | 21 |
| 3 | Electric Starter Motor With Idle Gear | 20 |
| 4 | Planet wheel carrier for a planetary gear | 17 |
| 5 | Automatic transmission | 14 |
| 6 | Automatic transmission | 9 |
| 7 | Planet wheel carrier for a planetary gear | 6 |
| 8 | Gear carrier flex mount lubrication | 6 |
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.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Flender Finland Oy
Flender Finland Oy holds 7 patent records — the largest share in this corpus — concentrated in F16H57 (gear carrier and lubrication design) and F16C (shafts, bearings, and couplings), indicating a vertically integrated approach to planetary gear lubrication. Their multi-subgroup coverage across both transmission architecture and bearing interfaces creates a broad defensive perimeter in the core technology.
patent records: 7Schaeffler Technologies AG & Co KG
Schaeffler Technologies AG & Co KG holds 2 patent records and is flagged as a new entrant in the most recent filing window, with its activity concentrated in F03D15 and F03D80 (wind-turbine drivetrains) and F16C33 (rolling-element bearings). This positioning signals that Schaeffler is approaching planetary gearbox lubrication durability from the wind-energy sector, where gear-system reliability requirements are especially demanding.
patent records: 2Frequently asked questions
The corpus contains 25 patent families in scope, representing globally filed inventions specifically addressing lubrication design and wear durability in planetary gearboxes.
Flender Finland Oy leads with 7 patent records, which is roughly twice the count of the second-ranked filer, Mazda Motor Corp, at 4 patent records.
The field is classified as Maturity. Annual filings have plateaued near their peak around 2018 and have not resumed a sustained upward trend, indicating a field where foundational solutions are established and incremental refinements are visible in new filings.
F16H (Gearing & transmissions) is the visible class with 34 patent records, followed by F16C (Shafts, bearings & couplings) with 15. F03D (Wind motors) is the next largest cluster at 6, reflecting wind-turbine drivetrain applications.
The United States leads with 14 patent records, making it the primary protection market. China follows with 8, and Europe (EPO) and India each have 5 patent records. Canada and WIPO filings are minimal.
Yes. F01D (Turbines & non-positive engines), B60T (Vehicle brakes & braking), F02C (Gas-turbine plants), and F16D (Clutches & brakes) each have only 1–2 patent records in this corpus, pointing to sparsely covered adjacent application domains. These should be validated with broader prior-art searches before being treated as open white spaces.
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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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