SBR Patents: Top Companies, Trends & White Space 2026
- Filings have cooled since 2018, with the peak year of 80 records giving way to a flat-to-declining run through the 2022 midpoint of 40 — this is a maturing claim space, not a growing one.
- China leads filing volume by a wide margin, with 286 records at the receiving office compared with 157 in the US and 151 at the EPO, reshaping where freedom-to-operate checks need to start.
- Tyre-specific claims dominate the compositions, with B60C pneumatic tyre codes touching 507 of the 1,000 records alongside 937 in general polymer compositions — footwear and non-tyre elastomer uses are comparatively thin.
Filing growth compares 2021 (18 records) with 2024 (27) — 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 1,000 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset tracks patent families addressing styrene-butadiene rubber synthesis and compounding — emulsion and solution SBR routes, latex formulation, filler dispersion, vulcanization chemistry and molecular-weight control — filed or published between 2015 and mid-2026. The search combines title/abstract terms for SBR latex and solution SBR with claim-description language on emulsion polymerization, vulcanization and rolling resistance, scoped to the C08F236, C08L9 and C08C19 IPC groups.
Publication typically lags filing by around 18 months, so the most recent years in any trend line understate real activity; treat 2025 and 2026 figures as a floor, not a ceiling.
Filing trend and technology composition
1,000 patent families sit in this dataset, spanning offices in China, the United States, Europe, South Korea and Japan, with a technology mix concentrated in polymer compositions and tyre applications.
A field past its filing peak
Annual filings ran from 52 in 2017 to a peak of 80 in 2018, then eased toward a midpoint of 40 in 2022 and down to 4 in the still-incomplete 2026 count. Read the recent-year decline together with the publication lag rather than as a sudden drop-off.
Composition and tyre codes carry the weight
C08L polymer-composition codes appear on 937 of 1,000 records and C08K additive codes on 673, meaning most filings are compounding claims layered onto known base chemistry rather than new polymerization routes; B60C pneumatic tyre codes on 507 records confirm tyre performance as the dominant application, with footwear (A43B, 54 records) a distant secondary use.
Shares are the percentage of the 1,000 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Styrene-Butadiene Rubber (SBR) Synthesis and Compounding with Eureka
This page is one run against one query. Ask Eureka your own question about styrene-butadiene rubber (sbr) synthesis and compounding and every answer comes back with the patent numbers behind it.
Try EurekaA representative recent filing
Block-copolymer dispersants in SBR latexes for asphalt emulsion applications
BASF SE's filing discloses asphalt compositions built around a block-copolymer dispersant used alongside an SBR latex. The copolymer pairs a polybutyl acrylate hydrophobic block, which anchors to the asphalt particle, with a sodium polystyrene sulfonate hydrophilic block for stability, and the claims specify a molecular weight exceeding 5000 g/mol.Filed by BASF SE, published 2023-09-28 as US20230303842A1.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6407153B1 | Silica-containing rubber compositions | 90 |
| 2 | CN101885865A | 一种高减震、耐磨运动鞋鞋底材料及其制造方法 | 79 |
| 3 | CN102212216A | 一种高耐磨、低硬度运动鞋鞋底材料及其制造方法 | 61 |
| 4 | JP2007137941A | Rubber composition and high performance tire using the same | 53 |
| 5 | JP2015232114A | Rubber composition and pneumatic tire | 51 |
| 6 | CN102516617A | 一种高强度叠层阻燃输送带覆盖层橡胶及其制备方法 | 50 |
| 7 | JP2010275386A | Rubber composition for tire tread | 50 |
| 8 | JP2014189697A | Rubber composition for tire tread | 49 |
| 9 | US5466724A | Adhesive composition for a wound dressing | 49 |
| 10 | US20120322925A1 | Functionalized silica for silica wet masterbatches and styrene butadiene rubber compositions | 42 |
Citation counts favour older filings that have had more time to accumulate citations within the searched corpus — read them as a signal of past influence, not current relevance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the filing pattern signals
Four figures from this dataset matter more than the raw count: where filings concentrate by geography, which IPC codes carry the claim density, how citation age skews the influence signal, and what the office split implies for clearance work.
China is the primary filing venue
With 286 records at the Chinese receiving office against 157 in the US and 151 at the EPO, clearance searches that start in Western offices alone will miss the largest single bloc of SBR compounding art.
Compounding, not new polymer chemistry, dominates
Nearly every record in the set carries a C08L polymer-composition code, and C08K additive codes appear on 673 records. The claim activity is overwhelmingly about what goes into the rubber, not new ways of making the base SBR.
Tyres absorb the bulk of application claims
Just over half of the dataset touches pneumatic tyre codes, while footwear (A43B) sits at only 54 records — a large gap between the two rubber-goods categories that share this base chemistry.
The most-cited record predates the dataset window
The highest citation count in this landscape, 90, sits on a silica-containing rubber composition patent; citation leaders in any searched corpus skew toward older filings that have simply had longer to accumulate citations, so treat this as historical influence rather than current relevance.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to styrene-butadiene rubber (sbr) synthesis and compounding, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| China Petroleum & Chemical Corporation (Sinopec) | Sinopec Beijing Research Institute of Chemical Industry | 29 |
| China Petroleum & Chemical Corporation (Sinopec) | Sinopec Baling Branch Company | 2 |
| Toyo Tire Corporation | Toyobo Co., Ltd. | 2 |
| Yokohama Rubber Co., Ltd. | Mikihiro Goto | 1 |
| Yokohama Rubber Co., Ltd. | GOTO YOSHIHIRO | 1 |
| China Petroleum & Chemical Corporation (Sinopec) | Sinopec (Beijing) Research Institute of Chemical Industry Co., Ltd. | 1 |
| China Petroleum & Chemical Corporation (Sinopec) | Sinopec Qilu Branch Company | 1 |
| Trinseo Europe GmbH | Styron Europe GmbH | 1 |
Only 10 co-assignee pairs appear across the dataset, and the strongest by far links a single organisation to its own research institute (29 shared records) rather than to an external partner — cross-company joint filing is not a meaningful pattern here.
Who is filing, and where the momentum sits
Assignee activity in this dataset is dominated by tyre manufacturers and one large state-owned petrochemical group, with recent-year momentum trending flat or down across the named players tracked.
Even active filers are pulling back
Toyo Tire logged only 1 filing in the latest tracked year, down 50% year-on-year, and several other named tyre makers — Sumitomo Rubber, Goodyear, Hankook, Yokohama Rubber and Bridgestone — show zero filings in the same window.
The strongest link is an internal one
The single strongest co-assignee pair in the dataset connects Sinopec to its own Beijing Research Institute of Chemical Industry, reflecting an internal R&D pipeline rather than external collaboration.
A broad base beneath a few concentrated filers
With 1,000 families spread across the full ranking and only a handful of standout organisations, most assignees in this space hold a small number of filings each — typical of a compounding-heavy field where formulation tweaks generate many discrete filings.
| Assignee | Recent year | YoY |
|---|---|---|
| Toyo Tire Corporation | 1 | -50% |
| Sumitomo Rubber Industries | 0 | -100% |
| The Goodyear Tire & Rubber Company | 0 | — |
| Hankook Tire | 0 | — |
| Yokohama Rubber Co., Ltd. | 0 | — |
| Bridgestone Corporation | 0 | — |
| China Petroleum & Chemical Corporation (Sinopec) | 0 | — |
| Sinopec Beijing Research Institute of Chemical Industry | 0 | — |
Where to take this analysis
The dataset points to a mature, compounding-heavy field with geographic concentration in China and thin coverage outside tyres. Two directions follow from that.
Map claims against the white-space branches
Run a claim-by-claim comparison against the under-claimed areas flagged above — non-tyre elastomer uses and bio-based feedstocks in particular — before committing R&D budget to compounding variations that sit on already-dense prior art.
Explore white space in EurekaTrack the Sinopec and tyre-maker filing cadence
With momentum flat or negative across the named tyre manufacturers and Sinopec concentrated internally, a quarterly watch on new publications from these assignees will catch shifts in strategy earlier than an annual review.
Set up assignee tracking in EurekaCommon questions about SBR patents
The ranking in this dataset is led by a mix of major tyre manufacturers and a large state-owned Chinese petrochemical group, with Sinopec and its internal research institutes together accounting for the strongest co-filing link in the data (29 shared records). Tyre makers including Toyo Tire, Sumitomo Rubber, Goodyear, Hankook, Yokohama Rubber and Bridgestone all appear in the tracked assignee set, though most show flat or declining recent-year filing counts. Beyond the leaders there is a long tail of assignees with only a handful of filings each, which is typical for a compounding-heavy field where each formulation tweak can generate a discrete filing.
No — filings peaked at 80 in 2018 and have trended down since, sitting at 40 by the 2022 midpoint and falling further toward the end of the window. Because publication lags filing by roughly 18 months, the very last one or two years in any trend understate true activity, but the multi-year direction from 2018 onward is clearly flat to declining rather than growing. This pattern is consistent with a field where the core compounding chemistry is well established and new filings are largely incremental.
China leads by a clear margin with 286 records at its receiving office, ahead of the United States at 157 and the European Patent Office at 151. South Korea (117) and Japan (78) follow, with WIPO PCT filings at 46. Any freedom-to-operate or clearance search that skips Chinese-language filings will miss the largest single bloc of art in this space.
US20230303842A1, assigned to BASF SE and published in September 2023, covers asphalt compositions that combine an SBR latex with a block-copolymer dispersant built from a polybutyl acrylate hydrophobic block and a sodium polystyrene sulfonate hydrophilic block, specified above a 5000 g/mol molecular weight threshold. It is narrowly scoped to asphalt emulsion applications rather than tyre or footwear compounding, so it does not block general tyre-tread SBR compounding work, but anyone formulating SBR-modified asphalt with a similar block-copolymer dispersant architecture should review its claims closely.
The clearest gaps sit outside the dense tyre-tread core: footwear applications carry only 54 records against 507 for pneumatic tyres despite sharing much of the same base chemistry, and non-asphalt uses of block-copolymer latex dispersants look comparatively open next to the asphalt-specific claims that do exist. Bio-based butadiene feedstock routes and filler alternatives to silica for rolling-resistance reduction are also thin relative to the volume of general C08L compounding art. These are directional signals from filing density, not a guarantee of allowability — a full claim-by-claim check is still needed before filing.
Research Styrene-Butadiene Rubber (SBR) Synthesis and Compounding in depth with Eureka
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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.