PEEK Compounding Patents: Leaders, Trends & White Space 2026
- 14.3% concentration at the top. The five leading assignees together hold 1,880 of the 13,182 records in scope — a real lead, not a runaway monopoly.
- Filings cooled after a 2018 peak. 811 records published in 2018 versus 43 so far in the still-filling 2026 year; the 2021→2024 span alone fell 45%, from 721 to 394.
- Composition claims dominate over hardware. C08L polymer-composition filings (24.5% of records) outnumber shaping (B29C, 14.0%) and bearing/shaft hardware (F16C, 5.2%) combined classes by a wide margin.
Filing growth compares 2021 (721 records) with 2024 (394) — 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 13,182 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Polyether ether ketone (PEEK) compounding sits at the intersection of polymer chemistry and mechanical engineering: formulators tune melt viscosity, crystallinity and filler loading to hit continuous-use temperature and wear-resistance targets, while downstream shapers turn those compounds into bearings, seals and structural parts. This dataset pulls 13,182 published records filed against a search built around PEEK compound and resin terms crossed with the processing and performance vocabulary that defines commercial-grade material — melt viscosity, carbon fiber filling, crystallinity control and wear resistance.
The result spans composition-of-matter claims, processing methods and the end-use hardware built from the compound, which is why the IPC classes below overlap heavily rather than partition cleanly.
Filing trend and technology composition
Two views of the same 13,182-record corpus: how filing volume moved year over year, and which IPC subclasses carry the claim density.
Filing trend: a 2018 peak, then a real pullback
Publications ran 714 in 2017 and peaked at 811 in 2018. The 2021-to-2024 window, the most recent stretch that can be read as complete once publication lag is accounted for, fell 45% — from 721 records to 394. Years after 2024 are still filling in and should not be read as a continued decline yet.
Where the claims sit: composition over hardware
C08L (polymer compositions) leads at 24.5% of the 13,182 records, with C08J (polymer processing) and C08K (additives) each near 14.6%. Shaping (B29C) and laminates (B32B) follow in the 12-14% range, while the bearing and shaft hardware class F16C sits at just 5.2% — a much smaller share of the filing activity than the compounding chemistry itself.
Shares are the percentage of the 13,182 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Polyether Ether Ketone Compounding with Eureka
This page is one run against one query. Ask Eureka your own question about polyether ether ketone compounding and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative and most-cited filings
Molybdenum disulfide nanotube-carbon nanotube-PEEK composite material
Filed by China Academy of Machinery Wuhan Research Institute of Material Protection, this July 2026 application claims a composite built from 97-99 parts PEEK to 1-3 parts of a molybdenum disulfide nanotube-carbon nanotube hybrid filler, aimed at improving compressive properties and hardness over unmodified PEEK.Illustrates the current direction of filing activity: nanostructured hybrid fillers layered onto PEEK rather than single-additive systems.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20070191713A1 | Ultrasonic device for cutting and coagulating | 1,712 |
| 2 | US20080170982A1 | Fabrication and Application of Nanofiber Ribbons and Sheets and Twisted and Non-Twisted Nanofiber Yarns | 1,266 |
| 3 | US20140291886A1 | Three dimensional printing | 750 |
| 4 | US20100210745A1 | Molecular Healing of Polymeric Materials, Coatings, Plastics, Elastomers, Composites, Laminates, Adhesives, a… | 718 |
| 5 | US20150078874A1 | Compliant robot blade for defect reduction | 520 |
| 6 | US8967608B2 | Glass substrate-holding tool and method for producing an EUV mask blank by employing the same | 520 |
| 7 | US20070050032A1 | Prosthetic intervertebral discs | 460 |
| 8 | US20120178986A1 | Percutaneous heart pump | 421 |
| 9 | US20050228500A1 | Prosthetic intervertebral disc and methods for using same | 386 |
| 10 | WO2007015710A2 | The fabrication and application of nanofiber ribbons and sheets and twisted and non-twisted nanofiber yarns | 383 |
Citation counts reflect influence inside this searched corpus and skew toward older filings; they are not a measure of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the data means for a filing decision
Three read-outs from the corpus that matter more than the raw record count.
A real lead, not a lock
The leading assignee alone holds 843 records, well ahead of fifth place at 235, but the top five together still account for only 14.3% of the 13,182 records in scope. That leaves most of the field to a long tail of single- and few-filing entrants.
Cooling from a 2018 peak
Filings peaked at 811 in 2018 and had fallen to 394 by 2024, the last year clean of publication lag. Read this as reduced pressure on newly filed composition claims, not as the technology losing relevance — compounded PEEK parts remain in active production.
Chemistry crowds ahead of hardware
Polymer-composition claims (C08L) and processing/additive claims (C08J, C08K) together dominate the classification profile, while bearing and shaft hardware (F16C) sits at just 5.2%. Filers competing on formulation face denser prior art than those building end-use components.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to polyether ether ketone compounding, with the prior art for and against each one.
Who is filing, and where the room still is
The ranked leaders span materials majors, bearing and imaging-equipment makers, and specialty resin suppliers — a mix that reflects PEEK's use in both structural compounds and finished mechanical parts.
Clear top position
The leading assignee's record count is well ahead of the rest of the ranked field, but even at 843 it represents a fraction of the 13,182-record corpus — no single filer controls the space.
Recent-year activity is thinning
Several assignees in the momentum tracking show single-digit filings in the latest year with year-over-year declines of around 80%, consistent with the broader 2021-2024 pullback rather than isolated retreats.
Industry-university pairs lead joint filing
The strongest co-assignee link in the dataset pairs a specialty chemicals filer with a university research group, ahead of two industrial supplier-to-supplier pairings in the low teens.
| Assignee | Recent year | YoY |
|---|---|---|
| Eastman Chemical Company | 6 | — |
| Daikin Industries, Ltd. | 3 | -80% |
| DIC Corporation | 1 | — |
| Nippon Filcon Co., Ltd. | 1 | -80% |
| Canon Inc. | 1 | -67% |
| Toray Industries, Inc. | 0 | — |
| NTN Corporation | 0 | — |
| SABIC Global Technologies B.V. | 0 | -100% |
Where to take this analysis
The dataset points to specific next steps depending on whether you are clearing a formulation or scouting a gap.
Run a freedom-to-operate check on filler chemistry
With C08K additive claims at 14.6% of records, a specific filler system should be checked against the dense prior art before committing to a formulation.
Check claims in EurekaTrack the assignees still filing after the 2018 peak
Momentum data shows most tracked assignees pulling back sharply; identifying who is still filing at volume flags where competitive pressure remains live.
Monitor assignees in EurekaScope the under-claimed branches before drafting
Sub-areas like additive-manufacturing-grade feedstock and hybrid bearing interfaces sit outside the crowded core classes and may support broader first claims.
Explore white space in EurekaCommon questions on PEEK compounding patents
The ranked leader in this dataset holds 843 of the 13,182 records in scope, with the field then spreading out quickly — fifth place sits at 235 and tenth at 182. The top five assignees together account for 14.3% of all records, so while there is a clear leader, no single company controls the space. A freedom-to-operate search should still cover the full ranked list rather than assuming the leader's portfolio is the only one that matters.
No — filings peaked at 811 records in 2018 and had fallen to 394 by 2024, a 45% drop over the 2021-2024 span, which is the most recent period clean of publication lag. Records from 2025 and 2026 are still incomplete because publication typically lags filing by around 18 months, so they should not be read as confirming a continued decline. The honest read is a cooling filing rate through the mid-2020s rather than an active technology in decline.
Polymer-composition claims under IPC class C08L lead at 24.5% of the 13,182 records, ahead of polymer processing (C08J) and additive use (C08K), each near 14.6%. Shaping methods (B29C) and laminate structures (B32B) follow in the 12-14% range. Bearing and shaft hardware built from PEEK, classified under F16C, makes up only 5.2% of records, meaning the crowded ground is in the material chemistry itself rather than in the finished parts.
This 2026 filing from China Academy of Machinery Wuhan Research Institute of Material Protection claims a PEEK composite loaded with a molybdenum disulfide nanotube-carbon nanotube hybrid filler at 1-3 parts per 97-99 parts PEEK, targeting improved compressive strength and hardness. It signals that hybrid nanostructured filler systems, rather than single-additive formulations, are where recent formulation claims are heading. Anyone drafting a similar hybrid-filler composition claim should check its specific weight ratios and filler combination against this filing directly.
The classification data shows dense coverage in core composition, processing and additive classes (C08L, C08J, C08K) but comparatively thin coverage in adjacent areas such as recyclate-blended compounds, sub-micron filler dispersion control and additive-manufacturing-grade PEEK feedstock. These sit next to the crowded core rather than inside it, which is typically where a narrower but more defensible first claim can still be drafted. Confirming white space requires checking the specific claim language in the dense classes, not just the class-level counts.
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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.