Tribology & Lubrication Patents: Who Leads, Where the Gaps Are 2026
- Concentration at the top. The five leading assignees hold 30.1% of all 552 records in scope, and the ranked leaders extend to 45.5% among the top ten — the rest is a long tail of single- and few-filing entrants.
- Filing has cooled since the 2020 peak. Annual filings ran from 32 in 2017 to a peak of 33 in 2020, then fell from 19 in 2021 to 6 in 2024 — a 68% drop over that span, though 2025-26 counts are still filling in due to publication lag.
- Composition spans mechanical and biomedical claims. Electric digital data processing (G06F) and implants/prostheses (A61F) each rival core lubricants (C10M) in record share, showing tribology claims increasingly overlap with sensing and biomedical contact mechanics.
Filing growth compares 2021 (19 records) with 2024 (6) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 552 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This review covers 552 published records filed or published between 2015 and the 2026-08-31 cut-off, drawn from a search combining core tribology terms — friction, wear, lubrication, contact mechanics — with technical qualifiers such as contact stress, friction coefficient, fatigue crack and vibration mode. The scope therefore spans classical mechanical tribology alongside adjacent fields that share the same physics: joint prosthetics, rail contact, drilling tool wear and materials testing.
Because publication lags filing by roughly 18 months, the most recent one to two years in any trend understate true filing activity. 2024 is the most recent year that can be read as a reasonably complete signal; 2025 and 2026 figures will continue to rise as pending applications publish.
Filing trends and technology composition
The two views below cover the same 552 records from different angles: one tracks filing activity by year, the other breaks the corpus down by IPC subclass. A single record can carry several IPC codes, so the subclass shares add up to more than 100%.
Filing trend, 2017-2026
Annual filings rose to a peak of 33 in 2020, then declined from 19 in 2021 to 6 in 2024 — a 68% fall across that three-year window. Treat 2025 and 2026 as incomplete rather than as evidence of continued decline.
Technology composition by IPC subclass
G06F (electric digital data processing) leads at 13.6% of the 552 records, closely followed by A61F (implants & prostheses) at 12.1% and C10M (lubricants) at 10.0%. G01N (material analysis & testing), A61K (medicinal preparations), B61K (railway auxiliary equipment), B24B (grinding & polishing) and E21B (earth & rock drilling) each sit between 6% and 10%, showing the field's claim activity is distributed across mechanical, biomedical and industrial-process branches rather than concentrated in one.
Shares are the percentage of the 552 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Tribology & Lubrication Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about tribology & lubrication patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records in the corpus
System and method for intraoperative joint contact mechanics measurement
A method for intraoperatively measuring joint contact mechanics of a patient's joint is provided. The method includes inserting a sensor between first and second bones of a joint. Then a predetermined force is applied to one of the first and second bones. Afterwards, contact mechanics such as contact stresses, contact areas and/or forces are measured between the first and second bones in response to the applied predetermined force.Filed by Hospital for Special Surgery, this record illustrates how contact-mechanics measurement — a core tribology concept — has been claimed in a surgical-intraoperative context rather than a purely mechanical one.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5236461A | Totally posterior stabilized knee prosthesis | 457 |
| 2 | US6641893B1 | Functionally-graded materials and the engineering of tribological resistance at surfaces | 227 |
| 3 | US20130069275A1 | Printing transferable components using microstructured elastomeric surfaces with pressure modulated reversibl… | 200 |
| 4 | US20140238153A1 | Artificial skin and elastic strain sensor | 183 |
| 5 | US20070219638A1 | Prosthetic glenoid component | 142 |
| 6 | WO2013044226A2 | Artificial skin and elastic strain sensor | 141 |
| 7 | US9412727B2 | Printing transferable components using microstructured elastomeric surfaces with pressure modulated reversibl… | 99 |
| 8 | US7441447B2 | Methods of imaging in probe microscopy | 98 |
| 9 | US20120176306A1 | System and method for providing substantially stable haptics | 85 |
| 10 | US5537851A | Sheet product produced by massive reduction in last stand of cold rolling process | 73 |
Citation counts reflect influence within the searched corpus and favour older filings; they are not a measure of current commercial importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once the raw counts are read against denominators rather than in isolation.
The top of the field is settled, the rest is open
The five leading assignees between them hold 30.1% of all 552 records in scope, rising to 45.5% among the top ten. That leaves more than half the corpus spread across a long tail of assignees with only a handful of filings each — a sign that entry is still possible outside the core claims the leaders already hold.
Activity has cooled from its 2020 peak
Filings peaked at 33 in 2020 and fell from 19 in 2021 to 6 in 2024, a 68% drop across that window. This reads as a genuine cooling rather than a data artefact for 2021-2024, though 2025 and 2026 remain incomplete due to publication lag and should not be read as continuing the decline.
Tribology claims are migrating into sensing and biomedical territory
The two largest IPC subclasses by record share are not classical lubrication codes — they are digital data processing (G06F, 13.6%) and implants/prostheses (A61F, 12.1%), ahead of lubricants themselves (C10M, 10.0%). Contact-mechanics and wear physics are increasingly claimed inside sensor-instrumented and biomedical devices rather than as standalone mechanical inventions.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to tribology & lubrication patent landscape, with the prior art for and against each one.
Who is filing, and where the gaps sit
The assignee ranking returns 100 companies counted across the 552 records in scope — not a top-50 or top-100 cut, but the full set the data endpoint surfaces. Filing concentration sits at the leader and across the next several places, with a long tail beyond that.
One assignee well ahead of the field
The leading assignee holds 54 records, well clear of fifth place at 23 and tenth place at 13. That gap suggests a sustained, deliberate filing programme rather than opportunistic single filings.
Most of the field files rarely
Beyond the top ten, filing counts drop quickly toward single-digit and single-filing entrants. For a new entrant, the crowded claim space sits with a handful of names; most of the remaining 90-plus ranked assignees represent narrow, defensible niches rather than blocking portfolios.
Even established filers show no recent activity
Several assignees with meaningful historical filing counts show zero records in the latest year captured. Combined with the broader 2021-2024 decline, this points to either portfolio maturity, a shift in filing strategy, or simply publication lag masking pending applications.
| Assignee | Recent year | YoY |
|---|---|---|
| Kelsan Technologies | 0 | — |
| Yeda Research and Development Co. Ltd. | 0 | — |
| University Rey Juan Carlos | 0 | — |
| Mubea Carbo Tech GmbH | 0 | — |
| Massachusetts Materials Technologies LLC | 0 | — |
| Scyon Orthopaedics | 0 | — |
| Noetic Technologies Inc. | 0 | — |
| BENOIST GIRARD SAS | 0 | — |
Where to take this analysis
The figures above describe the shape of the field. Turning that into a filing or freedom-to-operate decision means going deeper into specific claims and assignees.
Map claim boundaries on the leading portfolios
The top assignees' 54, 23 and 13-record positions are built from specific claim language, not just counts. Reviewing their independent claims shows exactly where the occupied space ends.
Explore assignee portfolios in EurekaTest white-space branches against prior art
Under-claimed sub-areas such as rail contact fatigue sensing or drilling wear diagnostics look thin in aggregate counts, but a targeted prior-art search confirms whether that is real headroom or a search-scope artefact.
Run a prior-art check in EurekaTrack filing momentum as 2025-26 data fills in
The 2021-2024 decline is real, but 2025 and 2026 counts will rise as pending applications publish. Re-running the trend in a few quarters will show whether the cooling continues or reverses.
Set up monitoring in EurekaFrequently asked questions
The assignee ranking for this dataset returns 100 companies across 552 records, with one leading assignee holding 54 records, well ahead of fifth place at 23 and tenth place at 13. The top five assignees combined hold 30.1% of all 552 records, and the top ten hold 45.5%. Beyond that, filing activity spreads across a long tail of assignees with only a handful of records each, so the field is concentrated at the top but far from fully occupied.
Annual filings peaked at 33 in 2020 and declined from 19 in 2021 to 6 in 2024, a 68% drop over that three-year span. That decline is measured on complete years only; 2025 and 2026 figures will rise as pending applications publish, since publication typically lags filing by around 18 months. Based on current data through 2024, the trend is a genuine cooling rather than continued growth.
By IPC subclass share of the 552 records in scope, electric digital data processing (G06F) leads at 13.6%, followed by implants and prostheses (A61F) at 12.1% and core lubricants (C10M) at 10.0%. Material analysis and testing (G01N), medicinal preparations (A61K), railway auxiliary equipment (B61K), grinding and polishing (B24B) and earth/rock drilling (E21B) each account for roughly 6-10% of records. Because a single record can carry multiple IPC codes, these shares add up to more than 100%, reflecting how often tribology claims overlap with sensing, biomedical and industrial-process technology.
Sub-areas such as rail contact fatigue sensing, drilling tool wear diagnostics, elastomeric surface adhesion transfer and intraoperative joint contact-stress measurement show thinner concentration relative to core lubricant and contact-mechanics classes in this corpus. These are candidate areas for a first claim, but any white-space read from aggregate IPC shares should be confirmed with a targeted prior-art search before committing filing resources, since a thin count can also reflect a narrow search scope rather than genuine open space.
US20160100905A1, assigned to Hospital for Special Surgery and filed in 2016, covers a method for intraoperatively measuring joint contact mechanics by inserting a sensor between two bones of a joint, applying a predetermined force, and measuring resulting contact stresses, contact areas and forces. It sits at the intersection of classical tribology (contact mechanics) and surgical instrumentation. Anyone developing intraoperative sensing tools for joint replacement or biomechanical measurement should review its claim scope directly rather than relying on the abstract alone.
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.