Polyetheretherketone Curing Process Patents: Leaders & Trends 2026
- Filing peaked in 2018 at 18 families and has declined since, with the most recent year showing zero — a mature, occupied claim space rather than a growing one.
- C08L polymer-composition claims dominate at 116 of 157 records, while B29B plastics-preparation claims sit at just 7 — a narrow gate compared to the composition crowd.
- Momentum has gone flat across every leading assignee, with Solvay Specialty Polymers, Victrex, Arkema, Evonik and SHPP all recording zero filings in the latest tracked year.
Filing growth compares 2021 (6 records) with 2024 (1) — 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 157 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset tracks 157 patent families published between 2015 and mid-2026 that combine PEEK-specific terminology with melt processing, crystallization control, annealing or thermal processing language, filtered to the core polymer and shaping IPC classes. It captures how curing and thermal-history claims around polyetheretherketone have been staked out across composition, additive and shaping art, rather than treating PEEK chemistry broadly.
Filing activity rose from single digits in 2017 to a peak of 18 families in 2018, then eased back toward the 2022 midpoint of 5 and further since — consistent with a technology whose core thermal-processing claims were staked early and have not needed re-filing at the same pace. Because publication typically lags filing by around 18 months, the most recent year understates real activity, but the multi-year decline predates that lag effect.
Filing trend and technology composition
Two views of the same 157-family dataset: activity over time, and where claims sit across the IPC hierarchy.
Filings by year
Activity climbed from 8 families in 2017 to a peak of 18 in 2018, eased to 5 by the 2022 midpoint, and has continued to soften toward the present, partial year.
IPC subclass distribution
C08L (polymer compositions) and C08G (condensation polymers) carry the bulk of the art at 116 and 90 records respectively; shaping (B29C, 32) and additive (C08K, 28) claims trail well behind, and sterilising applications (A61L, 8) and plastics preparation (B29B, 7) remain the thinnest branches.
Shares are the percentage of the 157 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Polyetheretherketone Curing Process with Eureka
This page is one run against one query. Ask Eureka your own question about polyetheretherketone curing process and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited prior art and a recent representative filing
Extruded films comprising PEEK with low extractables content
The present invention relates to use of a PEEK polymer to manufacture films by extrusion, wherein the PEEK polymer is characterised by a total amount of extractables of no more than 3000 µg/g and by an amount of Oligomer (1) of no more than 70 µg/g.Filed by Solvay Specialty Polymers USA, LLC, published 2025-08-14 as WO2025168444A1 — one of the few active filings after several quiet years across the field.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | WO2005030836A1 | Polymeric ketone | 53 |
| 2 | US20060251878A1 | Polymeric material | 51 |
| 3 | US4960818A | Polymer composite preform and process for producing same | 25 |
| 4 | WO2018086873A1 | Polyarylether ketone copolymer | 24 |
| 5 | WO2011117607A1 | Method of prudicng a composite pipe and such a composite pipe | 21 |
| 6 | WO2007023253A1 | Polyether and its use for lining | 21 |
| 7 | CN101157268A | 一种聚醚醚酮棒材的制备方法 | 20 |
| 8 | US20190322804A1 | Polyarylether ketone copolymer | 16 |
| 9 | US7906574B2 | Polymeric ketone | 15 |
| 10 | EP3012297A1 | Composition based on poly(arylene ether ketone) having improved properties | 13 |
Citation counts accumulate over time inside the searched corpus, so older records such as the 2005 and 2006 filings naturally lead — treat this as a measure of influence on later filers, not of current commercial 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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Reading the filing curve, IPC spread and citation table together points to a field with settled core claims and a few narrow openings.
Activity has cooled since 2018
The peak of 18 families in 2018 was followed by a steady slide through the 2022 midpoint of 5 down toward zero in the most recent tracked year. That pattern reads as a field where the foundational curing and crystallization-control claims were filed early and have not required much follow-on protection since.
Composition claims dominate the class map
C08L polymer-composition claims appear in 116 of 157 records, with C08G condensation-polymer claims close behind at 90. Shaping (B29C, 32) and additive (C08K, 28) claims are comparatively sparse, suggesting most protection has been sought at the material-composition level rather than at the process-equipment level.
Europe leads filing volume, the US and PCT follow
Europe (EPO) accounts for 41 filings, ahead of the United States at 31 and WIPO PCT route filings at 22. The United Kingdom (14), Austria (12) and China (11) trail, indicating that protection strategy has centred on European and US markets more than on China to date.
Co-filing is limited and clustered
Only 10 co-assignee pairs appear across the 157 families, and the strongest pairing links Solvay Specialty Polymers USA with Cytec Industries at 4 shared filings. Most other pairs, including Victrex Manufacturing's links to named inventors, sit at 2, pointing to a field of largely independent corporate filers rather than joint-venture activity.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to polyetheretherketone curing process, with the prior art for and against each one.
Who holds the ground, and where it is open
Filing has gone quiet across every named leader in the latest tracked year, which changes how a newcomer should read the competitive map.
Solvay's filing pace has stopped, not disappeared
Solvay Specialty Polymers USA shows a -100% year-on-year change with zero filings in the latest tracked year, following a co-filing relationship with Cytec Industries that produced the dataset's strongest assignee pair at 4 shared families. Its 2025 extruded-film filing (WO2025168444A1) shows the company still active on extractables-control claims even as raw filing counts have fallen.
Victrex's named-inventor filings have also gone flat
Victrex Manufacturing appears twice in the co-assignee data, each time paired with a named individual inventor rather than another corporation, and shows zero filings in the latest year. That pattern is more typical of inventor-led incremental filings than of a coordinated program, which may leave gaps between the granted claims worth checking individually.
Arkema's two listed entities are both inactive in the latest year
Both Arkema France and Arkema Inc. show zero filings in the latest tracked year. Combined with SHPP Global Technologies and Evonik also at zero, the entire top of the assignee ranking has paused simultaneously, which is unusual and worth watching for the next filing wave once the publication lag clears.
| Assignee | Recent year | YoY |
|---|---|---|
| Victrex Manufacturing Limited | 0 | — |
| Solvay Specialty Polymers USA, LLC | 0 | -100% |
| Arkema France | 0 | — |
| Evonik | 0 | — |
| SHPP Global Technologies B.V. | 0 | — |
| Arkema Inc. | 0 | — |
| SABIC Innovative Plastics IP B.V. | 0 | — |
| Cytec Industries Inc. | 0 | — |
Where to take this analysis
The dataset points to a settled core and a few thin branches — the next steps depend on whether you are clearing a product or scouting a filing gap.
Run a freedom-to-operate check on composition claims
With 116 of 157 records touching C08L, any new PEEK formulation should be checked against the composition claims held by the leading assignees before committing to a specification.
Explore composition claims in EurekaWatch for the next filing wave
Every leading assignee shows zero filings in the latest tracked year; given publication lag, a renewed wave from Solvay, Victrex or Arkema could surface within the next reporting cycle.
Track assignee activity in EurekaScope the thinner IPC branches directly
B29B plastics-preparation and A61L sterilising overlaps carry far fewer records than the composition core, and may be where a first claim is still available.
Search white space in EurekaCommon questions on PEEK curing process patents
The dataset's strongest co-filing relationship links Solvay Specialty Polymers USA with Cytec Industries, at 4 shared families. Victrex Manufacturing, Arkema (both its French and US entities), Evonik and SHPP Global Technologies also appear among the named assignees, though every one of them shows zero filings in the most recently tracked year. That simultaneous pause across the top of the ranking is itself a notable finding: it suggests the core claim positions were established some years ago and have not needed frequent renewal since.
Filing activity peaked at 18 families in 2018 and has declined fairly steadily since, falling to 5 by the 2022 midpoint and continuing down toward zero in the latest partial year. Because publication lags filing by roughly 18 months, the very last year understates true activity, but the multi-year downward trend predates that lag effect and points to a maturing rather than growing field. Anyone benchmarking momentum should compare full years only, ideally excluding the current one.
The bulk of the art sits in C08L (polymer compositions, 116 of 157 records) and C08G (condensation polymers, 90 records), meaning most protection has been sought at the material-formulation level. Shaping-process claims under B29C appear in 32 records and additive-related claims under C08K in 28, both comparatively thin next to the composition core. Plastics-preparation claims under B29B and sterilising-related claims under A61L are the narrowest branches, at 7 and 8 records respectively, and are worth checking first for open claim space.
The highest-cited record in the dataset is WO2005030836A1, "Polymeric ketone," cited 53 times, followed by US20060251878A1, "Polymeric material," cited 51 times. Older foundational filings dominate the citation table simply because they have had longer to accumulate citations inside the searched corpus, not necessarily because they remain the most commercially active claims today. Newer filings such as the 2025 extruded-film application from Solvay should be read alongside these citation leaders rather than instead of them.
The IPC composition points toward B29B plastics-preparation and A61L sterilising-overlap claims as the thinnest branches, at 7 and 8 records respectively, against a composition core of 116 records under C08L. Filing geography also shows a lighter footprint in China (11 filings) relative to Europe (41) and the US (31), which may leave more room there depending on local prior art. Co-filing is sparse across the whole dataset, only 10 pairs total, so a first mover pairing with a specialty compounder is not a crowded path.
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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.