Elastomers & Rubber Patents: Top Companies & Filing Trends 2026
- 14.3% concentration at the very top. The five leading assignees combined account for 29,973 of the 210,063 records in scope, but the ranked field still runs 100 companies deep.
- Filing activity has pulled back from its 2017 peak. Published filings ran 988 in 2017 and activity in the 2021-2024 window is down 52%, from 737 to 352 — though the most recent years are still filling in.
- No single IPC subclass dominates. The densest class, C08L polymer compositions, still covers only 4.8% of the 210,063 records, meaning claim coverage is spread thin across composition, processing and laminate classes.
Filing growth compares 2021 (737 records) with 2024 (352) — 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 210,063 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset pulls 210,063 published records matching elastomer and rubber terminology combined with process and structure terms such as polymer chain, glass transition, curing reaction, melt flow and composite reinforcement. It spans publications from 2015 through the 2026-08-31 cut-off, though publication lags filing by roughly 18 months, so the final one or two years always understate real activity. The scope is broad by design: it captures both base polymer chemistry (addition and condensation polymers) and downstream applications such as tyre reinforcement, adhesives and laminated composites.
Reading this landscape means separating two different questions: who has filed the most, and where the claim space still has room. The assignee ranking answers the first. The IPC composition and receiving-office data answer the second, showing that even the busiest technology classes leave the majority of records outside their reach.
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Filing trends and technology composition
Two views of the same 210,063-record dataset: how filing volume has moved year over year, and how records distribute across the IPC subclasses that describe elastomer chemistry and processing.
Filings peaked in 2017, then declined
Published filings hit 988 in 2017, the peak year in this dataset. The 2021-2024 window shows a 52% decline, from 737 to 352 records — a real pullback, though 2025 and 2026 figures are still incomplete due to publication lag and should not be read as a continuation of that decline yet.
Composition claims lead, but narrowly
C08L (polymer compositions) covers 4.8% of the 210,063 records, ahead of C08F addition polymers at 2.2% and C08K additives at 1.8%. B32B laminates and C09J adhesives sit further down, each under 1.6% — evidence that claim activity is distributed across composition, processing and application classes rather than concentrated in one.
Shares are the percentage of the 210,063 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Elastomers & Rubber Patent Landscape with Eureka
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Try EurekaMost-cited records in this dataset
Pressure-sensitive composite reinforcement (US8763662B2)
Filed by Compagnie Generale des Etablissements Michelin, this record describes a composite reinforcement built from a reinforcing thread (for example a carbon steel cord) wrapped in two polymer layers with opposing glass transition behaviour: a positive-Tg thermoplastic layer such as 6,6 polyamide, and a negative-Tg thermoplastic styrenic elastomer layer such as an SB or SBS block copolymer. The construction is designed to adhere directly to a diene rubber matrix without a separate bonding step, aimed at tyre reinforcement.Abstract text drawn directly from the published record.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6838493B2 | Medical devices and applications of polyhydroxyalkanoate polymers | 1,833 |
| 2 | US9839422B2 | Implantable layers and methods for altering implantable layers for use with surgical fastening instruments | 1,222 |
| 3 | US9839423B2 | Implantable layers and methods for modifying the shape of the implantable layers for use with a surgical fast… | 1,217 |
| 4 | WO2005090427A2 | Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation | 1,178 |
| 5 | US6372608B1 | Exfoliating method, transferring method of thin film device, and thin film device, thin film integrated circu… | 1,156 |
| 6 | US9884456B2 | Implantable layers and methods for altering one or more properties of implantable layers for use with fasteni… | 1,133 |
| 7 | WO1996023010A2 | alpha -OLEFINS AND OLEFIN POLYMERS AND PROCESSES THEREFOR | 1,065 |
| 8 | WO1996030421A1 | Novel (CO)polymers and a novel polymerization process based on atom (or group) transfer radical polymerization | 1,050 |
| 9 | WO2000001745A1 | Propylene olefin copolymers | 995 |
| 10 | US4871705A | Process for production of a high molecular weight ethylene a-olefin elastomer with a metallocene alumoxane ca… | 934 |
Citation counts inside this corpus favour older filings and should be read as a signal of influence, not current relevance — several of the most-cited records here date from the mid-2000s.
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Browse MCP servers →What the concentration and citation data indicate
The ranking, citation and co-filing data point to a field where a handful of diversified chemical and tyre makers hold a durable but thin lead, and where most influential prior art is older than the current filing wave.
A lead, not a lock
The five leading assignees combined hold 29,973 of the 210,063 records in scope — a meaningful lead but far from a monopoly. With 100 companies in the ranked field and the tenth-place holder at only 2,492 records, most of the landscape sits in a long tail of moderate and single-digit filers.
Activity has cooled from its peak
Filings ran as high as 988 in 2017 and dropped from 737 in 2021 to 352 in 2024 — a real three-year decline. Because publication lags filing by around 18 months, the 2025-2026 figures in the dataset are not yet complete and should not be read as confirming a further slide.
Old prior art still shapes claims
The most-cited record in this dataset, on polyhydroxyalkanoate polymer medical devices, carries 1,833 citations, and several of the other heavily cited records date from the early-to-mid 2000s. High citation counts inside a searched corpus reward age and visibility, not present-day commercial weight.
Joint filings cluster around a few pairs
Only 10 co-assignee pairs appear in this dataset, and the strongest pair — a tyre maker and its dedicated research and technology affiliate — shares 191 records. That pattern suggests joint filing here is mostly an internal corporate-structure artifact rather than cross-company collaboration.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to elastomers & rubber patent landscape, with the prior art for and against each one.
The assignee landscape
The ranked field covers 100 companies, led by a diversified chemicals filer with 10,611 records. Filing density falls off quickly after the top few positions, and recent-year momentum data shows most of the leading names filing little or nothing in the latest tracked year — consistent with the broader publication-lag effect rather than a sign these companies have stopped innovating.
A diversified chemicals leader out front
The top-ranked assignee holds 10,611 records, well ahead of fifth place at 3,428 and tenth place at 2,492. That gap suggests the leader has built a genuinely broad portfolio across polymer chemistry rather than a narrow specialism.
A tight cluster behind the leader
Positions five through ten sit close together, from 3,428 down to 2,492 records — evidence of several similarly sized competitors rather than a single clear runner-up. Together the top ten account for 43,447 records, 20.7% of the 210,063 in scope.
Latest-year counts look thin across the board
Recent-year momentum figures show several of the leading assignees at zero or one record in the latest tracked year, with year-on-year drops as steep as -100% for some. This mirrors the roughly 18-month publication lag rather than a genuine stop in filing activity, so it should not be read as leaders exiting the space.
| Assignee | Recent year | YoY |
|---|---|---|
| 3M Innovative Properties Co. | 1 | -50% |
| ExxonMobil Chemical Patents Inc. | 0 | — |
| Dow Global Technologies LLC | 0 | -100% |
| Borealis AG | 0 | — |
| E.I. du Pont de Nemours & Co. | 0 | — |
| Compagnie Generale des Etablissements Michelin | 0 | — |
| The Goodyear Tire & Rubber Co. | 0 | -100% |
| Nike, Inc. | 0 | -100% |
Where to take this landscape
The published data sets the boundaries of who has filed and where. Turning that into a filing or freedom-to-operate decision means going deeper into specific claim language and the sub-areas the ranking data flags as thin.
Check the under-claimed sub-areas against your own chemistry
The gate chips above point to IPC subclasses with lower record density than the core composition classes. Confirm whether your specific formulation or process falls inside one of those gaps before assuming it is clear.
Explore in Eureka →Trace the co-assignee pairs for licensing signals
Only 10 co-assignee pairs appear in this dataset, concentrated around parent-subsidiary research structures. Where a pair spans two independent companies, that is worth a closer look for existing licensing or joint-development arrangements.
Explore in Eureka →Re-run the trend once 2025-2026 filings settle
The 2021-2024 decline is real, but the most recent two years are still incomplete because of publication lag. Revisit the filing trend once those years mature before concluding the field has kept contracting.
Explore in Eureka →Common questions on elastomer and rubber patents
The ranked field in this dataset covers 100 companies, led by a diversified chemicals assignee holding 10,611 of the 210,063 records in scope. The next several positions cluster fairly close together, with fifth place at 3,428 and tenth place at 2,492 records, so leadership is concentrated at the very top but the field is not a two-company race. Tyre makers, specialty chemical firms and materials science companies all appear among the leaders, reflecting how broadly elastomer chemistry is used across industries.
Filings peaked at 988 published records in 2017 within this dataset, and the more recent complete window shows a 52% decline from 737 records in 2021 to 352 in 2024. That is a genuine pullback over that three-year span. However, because publication typically lags actual filing by around 18 months, the 2025 and 2026 figures in any such dataset are still incomplete, so it is too early to say whether the downward trend continues past 2024.
Polymer compositions (IPC class C08L) is the most heavily covered class, appearing in 4.8% of the 210,063 records in scope. Addition polymers (C08F) and additive use (C08K) follow at 2.2% and 1.8% respectively, with polymer processing, laminates, condensation polymers, shaping and adhesives classes all below 1.6% each. Because a single record can carry several IPC classes, none of these figures should be read as a share of a fixed total — they show relative density, not an exhaustive breakdown.
US8763662B2, assigned to Compagnie Generale des Etablissements Michelin, claims a composite reinforcement structure combining a reinforcing thread with two polymer layers of opposing glass transition temperature — a positive-Tg layer such as 6,6 polyamide and a negative-Tg styrenic elastomer layer such as an SB or SBS block copolymer — designed to bond directly to a diene rubber matrix. Anyone developing a similar direct-adhesion reinforcement construction for tyres should review this claim closely, since the specific combination of layer Tg polarity and material classes is the core of what is protected. Alternative approaches that use a separate bonding agent, a different thread material, or a single-layer coating would sit outside this specific claim structure.
The IPC composition data shows that even the densest class, C08L polymer compositions, covers under 5% of the 210,063 records in scope, and classes further down such as condensation polymers, adhesives and shaping processes each sit below 1.6%. That leaves meaningful room in narrower combinations, such as curing kinetics for condensation polymers or adhesive bonding directly to diene rubber, where record density is comparatively thin relative to the core composition and additive classes. Confirming white space in a specific claim area still requires a targeted search rather than relying on subclass-level density 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.