Polyolefin Elastomer Patents: Top Companies & Filing Trends 2026
- Filing peaked in 2017 at 217 records and has since declined toward 35 in the most recent (partial) year — this is a maturing claim space, not a growing one.
- The leader holds 361 records but the top 5 assignees combined account for only 20.8% of all 2,583 records in scope, leaving a long tail of single- and few-filing entrants.
- China receives 1,079 of the filings more than three times the United States total of 359, making receiving-office choice a first-order filter for any freedom-to-operate check.
What this landscape covers
This dataset tracks 2,583 published records matching polyolefin elastomer, plastomer resin and POE resin terms combined with claims language around density, comonomer content, impact modification, flexibility, clarity or compatibility. The scope spans 2015 through mid-2026, capturing both the compositional chemistry (block copolymer design, catalyst routes) and the downstream formulation work (impact modifiers, cable insulation, adhesives, laminates) that sits on top of it.
Filing activity is judged here by patent family and record counts, which is the fairer unit than raw document counts because it neutralises aggressive continuation filing and multi-jurisdiction duplication. Publication typically lags filing by around 18 months, so the most recent year in any trend chart understates real activity.
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Filing trend and technology composition
Two views of the same 2,583 records: how filing volume has moved year over year, and which IPC subclasses carry the underlying claim density.
Filing trend, 2017–2026
Filings ran at 217 in 2017, the peak year on record, eased through a 2022 midpoint of 162, and have fallen to 35 in the latest (partial) year. That trajectory reads as flat-to-declining rather than a technology still gathering momentum.
IPC subclass composition
C08L (polymer compositions) touches 65.7% of the 2,583 records, with C08K (additives) at 36.7% and C08J (processing) at 18.2% behind it. Because records often carry several IPC classes, these shares add up to well over 100% of the record total — they describe overlap, not a partition.
Shares are the percentage of the 2,583 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Polyolefin Elastomers and Plastomers with Eureka
This page is one run against one query. Ask Eureka your own question about polyolefin elastomers and plastomers and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this space
Powdered thermoplastic polyolefin elastomer composition for slush molding (US9505868B2)
Filed by Dow Global Technologies, this patent claims a thermoplastic polyolefin elastomer powder built on an olefin block copolymer, defined by a tight set of physical parameters: Shore A hardness above 75, glass transition below −45°C, a distinct melting peak above 95°C, zero shear viscosity at or below 1,200 Pa·s, and a particle size distribution with 85% of particles between 150 and 420 microns and none above 500 microns.The claim scope is defined almost entirely by measurable physical parameters rather than by a specific monomer list, which is what makes it a useful test case for design-around analysis.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6215931B1 | Flexible thermoplastic polyolefin elastomers for buffering transmission elements in a telecommunications cable | 241 |
| 2 | US5741858A | Silane-crosslinkable elastomer-polyolefin polymer blends their preparation and use | 238 |
| 3 | US6207754B1 | Low modulus thermoplastic olefin compositions | 164 |
| 4 | US6225426B1 | Process for producing polyolefin elastomer employing a metallocene catalyst | 109 |
| 5 | US5552482A | Thermoplastic elastomers with improved extrusion performance | 92 |
| 6 | EP1300238A2 | Multilayer packaging film and process | 89 |
| 7 | US6005053A | Polyolefin elastomer blends exhibiting improved properties | 87 |
| 8 | US20040133175A1 | Ostomy appliance | 77 |
| 9 | US5807968A | Polyamide compositions and related methods | 74 |
| 10 | US6124406A | Blocky chlorinated polyolefins, process for making and use as impact modifier compatibilizer for PVC or CPVC | 67 |
Ranked by citation count within the searched corpus. Older filings accumulate citations simply by being available longer, so treat this as a signal of influence on subsequent filers, not a ranking of current commercial relevance.
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Browse MCP servers →What the numbers mean for a filing decision
Three patterns in the data matter more than any single ranking: where filing pressure has gone, where it is concentrated, and where the geography sends signal.
Volume is contracting, not growing
2017's peak of 217 records has given way to a steady decline through the 2022 midpoint of 162 down to 35 in the latest partial year. Recent-year momentum figures for several leading assignees show 0 filings and -100% year-on-year, consistent with a space where the core compositional claims were staked out earlier in the period.
A leader, then a long tail
The leading assignee holds 361 records, well ahead of the field, but the top 5 combined reach only 20.8% of all 2,583 records and the top 10 only 25.8%. That leaves the large majority of filings spread across a long tail of smaller and single-filing entrants — a structure that favours specific formulation niches over broad blocking positions.
China is the largest receiving office by a wide margin
China's 1,079 filings outnumber the United States (359) and the European Patent Office (333) combined, with WIPO PCT filings at 215, Japan at 103 and South Korea at 72. A freedom-to-operate review that only checks US and EP records is checking a minority of the documented activity.
Composition claims dominate over process claims
C08L (polymer compositions) appears in 65.7% of records, well ahead of C08K additive claims (36.7%) and C08J processing claims (18.2%). Cable and insulation-adjacent claims under H01B sit at 11.5%, a smaller but persistent slice worth watching for anyone in wire and cable formulation.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to polyolefin elastomers and plastomers, with the prior art for and against each one.
Who is filing, and where the gaps sit
The ranked leaders combine broad materials-science portfolios with automotive and cable-focused filers; several show no filings in the latest year, consistent with the field-wide slowdown.
The single largest portfolio in scope
The leading assignee's 361 records outpace the next-largest by a wide margin, built across composition, additive and processing claims. Its recent-year momentum has dropped to 0 filings, a -100% year-on-year change consistent with earlier-decade filing activity rather than current-year pressure.
A tight second tier
Fifth place sits at 32 records and tenth place at 23, a narrow spread that suggests no single challenger is close to the leader's scale. Automotive component and specialty chemical filers appear alongside global polymer producers in this band.
Collaboration is limited and leader-centred
Only 10 co-assignee pairs appear in the dataset, and the strongest ones all involve the leading assignee paired with either an affiliated entity or named individual inventors. This points to an ecosystem where most filers work alone rather than in joint ventures.
| Assignee | Recent year | YoY |
|---|---|---|
| Dow Global Technologies LLC | 0 | -100% |
| Cooper Standard Automotive Inc. | 0 | — |
| SABIC Global Technologies BV | 0 | -100% |
| Avient Corp | 0 | — |
| Bostik Inc | 0 | — |
| Basell Poliolefine Italia Srl | 0 | — |
| LG Chem Ltd | 0 | — |
| Kingfa Sci & Tech Co Ltd | 0 | -100% |
Where to take this next
The landscape numbers set the boundaries; the next step is testing a specific formulation or claim idea against them.
Check a formulation against the cited prior art
The most-cited records define much of the compositional baseline for flexibility, clarity and impact modification claims. Screening a new formulation against them early avoids rework after a search report arrives.
Explore prior art in EurekaMap the white space before drafting claims
The under-claimed sub-areas identified here are starting points, not conclusions. A full novelty search against the current record set will confirm whether a specific parameter combination is genuinely open.
Run a white space search in EurekaTrack the leading assignees' next moves
With several top filers showing zero activity in the latest year, watching for a resumption in filing — or a shift to a new IPC subclass — is a useful early signal of where the field moves next.
Set up assignee tracking in EurekaCommon questions about polyolefin elastomer patents
The leading assignee in this dataset holds 361 records, well ahead of any other single filer. However, the top 5 assignees combined account for only 20.8% of all 2,583 records in scope, and the top 10 for 25.8%, so no single company controls a majority of the documented filing activity. The remainder is spread across a long tail of smaller filers, including automotive component makers and specialty chemical companies. Anyone assessing freedom to operate should look beyond the leader to this broader distribution rather than assuming one portfolio dominates.
No — filing peaked at 217 records in 2017 and has declined since, reaching 162 at the 2022 midpoint and 35 in the most recent partial year. Several leading assignees show 0 filings in the latest year with year-on-year changes of -100%. Because publication lags filing by roughly 18 months, the very latest year is always undercounted, but the multi-year trend is unambiguously downward rather than flat.
China is the largest receiving office by a wide margin, with 1,079 of the records in scope, compared with 359 in the United States and 333 at the European Patent Office. WIPO PCT filings add 215, with Japan at 103 and South Korea at 72. This distribution means a search or clearance exercise limited to US and European records would miss the majority of documented filing activity in this field.
US9505868B2, assigned to Dow Global Technologies, claims a powdered thermoplastic polyolefin elastomer composition defined by specific physical parameters: Shore A hardness above 75, glass transition below −45°C, a melting peak above 95°C, zero shear viscosity at or below 1,200 Pa-s, and a defined particle size distribution. It does not claim a specific monomer or catalyst system, so formulations that fall outside its parameter windows — for example a different particle size band or a higher zero shear viscosity — are a plausible design-around path, though this requires a claim-by-claim check rather than a summary read.
The technology composition data shows dense claim coverage in core polymer compositions (C08L, 65.7% of records) and additives (C08K, 36.7%), but thinner coverage in more specific downstream applications such as clarity-optimized laminate blends or silane-crosslinkable cable insulation grades. These narrower branches sit at the intersection of two or more IPC subclasses rather than owning a subclass outright, which is typically where claim density is lower. A targeted novelty search on a specific parameter combination in these areas is the reliable way to confirm whether they are genuinely open.
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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.