Ethylene Octene Copolymer Patents: Who Leads, Trends 2026
- A long tail, not a leader. The top 5 assignees hold 21.9% of the 64 records in scope and the top 10 hold 37.5% — no single company dominates octene-plastomer claim space.
- China receives the most filings. 34 of the tracked records route through the China receiving office, well ahead of Japan (10), India (5) and South Korea (5).
- Additive and blend claims outweigh cable claims. C08L polymer compositions (65.6%) and C08K additive use (53.1%) cover far more records than H01B cable/insulator claims (15.6%).
Top-5 share is the combined record count of the five largest assignees divided by all 64 records in scope (CR5), not by the ranked leaders only.
What this dataset covers
Ethylene octene copolymer grades sit at the intersection of polymer chemistry and formulation engineering: the same base resin gets claimed for density and crystallinity control, for impact modification in blends, and for clarity or compatibility in finished compounds. This scope pulls 64 published records filed between 2015 and the 2026-07-31 cut-off, indexed by the presence of octene- or plastomer-grade language alongside a formulation or application term such as density, crystallinity control or encapsulant application.
Because publication typically lags filing by around 18 months, the most recent filing years in the trend below are undercounts, not a real drop-off in activity.
Filing trend and technology composition
Two views of the same 64 records: how filings moved year over year, and which IPC subclasses the claims actually sit in.
Filing trend, 2017-2026
Filings rose from 2 in 2017 to a peak of 6 in 2019, the highest single year in the tracked window. No reliable growth rate can be computed from this window because fewer than four complete years remain once publication lag is accounted for, and 2026 is a partial year.
IPC subclass composition
C08L (polymer compositions) and C08K (polymer additives) together cover the large majority of records, at 65.6% and 53.1% of the 64 records respectively. Cable and insulator claims under H01B (15.6%) and layered-product claims under B32B (12.5%) are present but secondary. Because a single record can carry several IPC classes, these shares add up to more than 100% of the record total — that is expected and not a data error.
Shares are the percentage of the 64 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Ethylene Octene Copolymer Grades with Eureka
This page is one run against one query. Ask Eureka your own question about ethylene octene copolymer grades and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records in this scope
Polypropylene and plastomer compositions and method of use thereof in molded products
A composition substantially free of elastomers, built on a crystalline polypropylene homopolymer modified with an ethylene octene copolymer plastomer, an exfoliated inorganic nanocomposite and a maleic-anhydride-grafted coupling agent. It is formulated so pigmented, molded parts can carry a painted, clear-coated look while remaining scratch resistant.Filed by LDM Technologies, Inc.; published 2004-11-18 as US20040229983A1.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | WO2010047029A1 | Rubber composition for transmission belt and transmission belt using the rubber composition | 42 |
| 2 | US20040229983A1 | Polypropylene and plastomer compositions and method of use thereof in molded products | 31 |
| 3 | CN103804707A | 一种制备用于制备离子交换膜的基膜的方法 | 17 |
| 4 | KR1020100123178A | Thermoplastic resin composition for automobile parts | 17 |
| 5 | CN102532687A | 一种低收缩率的复合材料及其制备方法 | 16 |
| 6 | CN106633681A | 一种高韧性聚酯树脂合金组合物及其制备方法 | 14 |
| 7 | CN102558803A | 汽车保险杠材料及其制备方法 | 14 |
| 8 | CN109666255A | 一种汽车内饰用低气味聚丙烯材料及其制备方法与应用 | 11 |
| 9 | JP1996185712A | Electric wire and cable | 11 |
| 10 | CN110294887A | 一种电缆用超耐低温护套 | 10 |
Ranked by citation count within this searched corpus. Older records accumulate more citations simply by being available longer, so treat this as a signal of influence within the field, not of current technical importance.
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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Three read-outs from the ranking, the geography and the citation table.
No single assignee controls the field
The top 5 assignees combined hold 21.9% of all 64 records, and extending to the top 10 only reaches 37.5%. That leaves close to two-thirds of filings spread across a long tail of single- or few-filing entrants across the 58 ranked companies.
Filing activity is centred on China
China accounts for 34 records, more than three times the next receiving office, Japan, at 10. India, South Korea, the United States and the EPO each account for single-digit counts, suggesting most commercial activity being claimed here is domestic-market-facing rather than filed for broad international protection.
The most-cited filing predates the current cluster
The top-cited record, a rubber composition for transmission belts, carries 42 citations, and the second, a polypropylene/plastomer molded-product patent, carries 31. Both are older filings; high citation counts here reflect longer time in the corpus rather than current filing pressure.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to ethylene octene copolymer grades, with the prior art for and against each one.
Who is filing, and where the gaps sit
The assignee ranking is a flat list of 58 companies with no dominant filer; momentum data shows the most active named assignees recorded zero filings in the latest tracked year, consistent with a maturing but not currently accelerating filing pattern.
The largest filer still holds a modest share
The leading assignee in this ranking holds 6 of the 64 records, with the count falling to 2 by fifth place and again by tenth place. This is a fragmented field rather than one shaped by a dominant incumbent.
Co-filing is rare and mostly bilateral
Only 3 co-assignee pairs appear across the dataset, the strongest linking a Korean footwear/leather research institute with a nanotechnology ceramics firm, and another linking an Indian research partnership. Cross-company collaboration is not a defining feature of this space.
Recent-year activity has gone quiet among tracked leaders
Every assignee tracked for recent-year momentum, including the leading filer, recorded zero filings in the latest year. Combined with the 2019 peak in the overall trend, this points to a filing wave that has already crested rather than one still building.
| Assignee | Recent year | YoY |
|---|---|---|
| Henkel KGaA | 0 | — |
| Korea Institute of Footwear & Leather Technology | 0 | — |
| Bando Chemical Industries, Ltd. | 0 | — |
| Dr. Sanjay Kumar Nayak (Seiyat) | 0 | — |
| Suzhou Kesman Lighting Engineering Co., Ltd. | 0 | — |
| Nanotech Ceramics Co., Ltd. | 0 | — |
| Hunan Valin Wire & Cable Co., Ltd. | 0 | — |
| Hubei Firsta Materials Science & Technology Group Co., Ltd. | 0 | — |
Where to take this
The dataset points to a fragmented, China-centred field with claim density concentrated in formulation rather than end-use categories.
Map freedom-to-operate against the additive claims
With C08L and C08K covering the majority of records, a formulation team needs to check compound-level claims before assuming a novel blend ratio is clear.
Explore the technology in EurekaTrack the momentum drop-off before committing R&D
Zero recent-year filings among the leading named assignees suggests this is a good moment to confirm whether the underlying technology need has shifted rather than assume steady growth.
Run a live assignee search in EurekaCommon questions
The assignee ranking for this scope covers 58 companies, and no single filer dominates: the leader holds 6 of the 64 records, falling to just 2 by both the fifth and tenth positions. The top 5 assignees combined hold 21.9% of all 64 records, and the top 10 hold 37.5%. This is a fragmented landscape with a long tail of single- or few-filing entrants rather than one or two companies controlling the core claim space.
In patent filings the two terms overlap heavily, which is why this search combined both. Ethylene octene copolymer describes the specific comonomer chemistry, while polyolefin plastomer grade is a broader commercial and formulation term that can include other comonomers. Most of the records in this scope claim density, crystallinity control or comonomer ratio as the mechanism, regardless of which term the filing uses.
China receives by far the most filings in this scope, with 34 of the 64 records routed through its patent office, more than three times the next largest office, Japan, at 10. India and South Korea each account for 5, and the United States and the European Patent Office trail at 3 and 2 respectively. This distribution suggests filing strategy here is largely shaped by domestic manufacturing markets rather than broad multi-jurisdiction protection.
The tracked filing trend peaked in 2019 at 6 filings in a single year, and recent-year momentum data for the most active named assignees shows zero filings in the latest tracked year. A reliable growth rate cannot be computed from this window because fewer than four complete years remain once the roughly 18-month publication lag is accounted for, so the most recent years understate true filing activity. Taken together, the evidence points to a wave that has already crested rather than one still accelerating.
The technology composition skews heavily toward polymer compositions and additive use, at 65.6% and 53.1% of the 64 records respectively, while categories like cosmetics use, medicinal-preparation carriers and cable-jacketing crystallinity control sit in single digits. Combined with only 3 identified co-assignee pairs, there is little evidence of concentrated competitive activity in these adjacent application branches. A first claim naming a specific comonomer ratio tied to one of these under-claimed end uses would face comparatively thin prior art in this scope.
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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.