GFRP Curing Process Patent Snapshot 2026
The GFRP curing process patent space is a nascent, highly fragmented field in a growth stage, with activity concentrated in China and no single applicant commanding more than a small share of total filings. Polymer composition and additive chemistry dominate the technology mix, while shaping and laminate branches remain comparatively sparse.
A fragmented field led by Huainan Jinde Industrial with no dominant bloc
Huainan Jinde Industrial Co., Ltd. holds the top position among ranked applicants, with 2 patent records — the only entity in the corpus to file more than one. The remaining ranked applicants each hold a single patent record, creating an unusually flat visible assignee structure.
The top five filers account for 24% of the ranked applicants visible in this query’ combined total, a low concentration figure that signals the absence of an entrenched incumbent bloc. No single player or alliance has established a commanding position.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Huainan Jinde Industrial Co., Ltd. | 2 | |
| 2 | CGN Delta Taicang Testing Technology Co., Ltd. | 1 | |
| 3 | Shanghai Juner New Materials Co., Ltd. | 1 | |
| 4 | Zhejiang Hongqi New Materials Technology Co., Ltd. | 1 | |
| 5 | Chengdu Guanyu Composite Materials Products Co., Ltd. | 1 | |
| 6 | Wuhu Baoyi Amusement Equipment Technology Co., Ltd. | 1 | |
| 7 | General Electric Co. | 1 | |
| 8 | Shanghai Pret Composite Materials Co., Ltd. | 1 | |
| 9 | Shanghai Pret Chemical New Materials Co., Ltd. | 1 | |
| 10 | Suzhou Putai Auto Parts Co., Ltd. | 1 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Chongqing Polycomp International Corporation | 1 | |
| 12 | SAIC Volkswagen Automotive Co., Ltd. | 1 | |
| 13 | Shanghai Genius Advanced Material (Group) Co., Ltd. | 1 | |
| 14 | YANTAI ZHONGKE RES INST OF ADVANCED MATERIALS & GR… | 1 | |
| 15 | Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences | 1 | |
| 16 | Sekisui Chemical Co., Ltd. | 1 | |
| 17 | Congress Financial Southwest | 1 | |
| 18 | Zhejiang Pret New Materials Co., Ltd. | 1 | |
| 19 | Chongqing Pret New Materials Co., Ltd. | 1 | |
| 20 | Beijing Composite Materials Co., Ltd. | 1 |
This flat structure means that barriers to entry through IP blocking are presently low; however, it also suggests the technology is still being defined across multiple parallel approaches rather than converging on established process standards.
Filing counts for the most recent 18–24 months are understated due to standard patent publication lag and should not be read as a slowdown in activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Multi-year growth with polymer chemistry as the dominant technical branch
The annual filing trend and technology composition charts together show a field that has expanded on a multi-year basis while remaining anchored in polymer formulation work rather than process engineering per se.
Annual filing trend
Activity picked up from 2018, reached a local peak in 2020, and has continued at a moderate pace through 2023. The three-year recent window is up 33% versus the prior three-year window, confirming multi-year growth; however, annual volume has eased from the 2020 peak. Zero counts in 2024 and 2026 reflect publication lag rather than a real cessation of activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
Polymer compositions (C08L), use of additives in polymers (C08K), and polymer processing and solutions (C08J) together account for the largest share of patent records, indicating that formulation-level innovations — resin matrix design and additive selection — are the primary focus. Shaping of plastics (B29C) is present but secondary, and layered products (B32B) and plastics preparation (B29B) are sparse, pointing to under-served process and structural branches.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Method of continuously bonding and curing a zinc-c…
A metal foil laminate including at least one sheet of metal foil directly bonded to one face of a sheet of glass fiber reinforced polyester and epoxy resin, and a continuous process for preparing such laminates including post curing partially cured product by radio-frequency electromagnetic energy. (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Method of continuously bonding and curing a zinc-c… | 38 |
| 2 | 一种低放热、耐黄变玻璃钢拉挤环氧树脂及制备方法 | 9 |
| 3 | 玻璃纤维增强聚对二甲酰癸二胺复合材料及其制备方法 | 5 |
| 4 | 一种反光型玻璃钢锚杆螺帽及生产方法 | 3 |
| 5 | 一种高精度大型玻璃钢投影幕壳体基体的生产工艺及其制得的壳体 | 2 |
| 6 | 一种强度高耐腐蚀的玻璃钢涂层材料及其制备方法 | 2 |
| 7 | 一种新型玻璃纤维增强塑料 | 2 |
| 8 | 一种高强抗菌聚丙烯复合材料及其制备方法 | 1 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Huainan Jinde Industrial Co., Ltd.
The sole applicant with 2 patent records in the ranking, Huainan Jinde Industrial’s filings concentrate on shaping of plastics (B29C 35) and use of additives in polymers (C08K 13 and C08K 3), reflecting a focus on the thermal curing and additive-loading aspects of GFRP processing. No momentum trend data is available for this applicant in the evidence.
patent records: 2Suzhou Putai Auto Parts Co., Ltd.
Suzhou Putai Auto Parts holds 1 patent record and is flagged as a new entrant with an upward momentum trend, indicating a first filing in the recent window. Its technology emphasis spans combined shaping operations (B29C 69), condensation polymers (C08G 59), and polymer processing (C08J 5), suggesting an interest in integrating resin cure chemistry with multi-step forming — a distinct approach from the field’s visible formulation focus.
patent records: 1Frequently asked questions
The corpus contains 10 patent families in scope. This is a small corpus, and conclusions about visible assignee structure should be weighted accordingly.
Huainan Jinde Industrial Co., Ltd. leads the ranking with 2 patent records, the only applicant to hold more than one. All other ranked applicants hold a single patent record each.
The field is in a Growth stage. The recent three-year window is 33% above the prior three-year window. Annual volume peaked in 2020 and has eased since, but figures for the most recent 18–24 months are understated due to publication lag.
Polymer compositions (C08L), use of additives in polymers (C08K), and polymer processing and solutions (C08J) are the most represented branches. Shaping of plastics (B29C) is a secondary focus, while layered products (B32B) and plastics preparation (B29B) are sparse.
China is overwhelmingly the leading jurisdiction with 15 patent records at the jurisdiction level. The United States, Canada, and Japan each account for one patent record, indicating that international coverage outside China is thin.
Yes. The most active co-filing cluster is within the Pret group: Chongqing Pret New Materials co-files with Zhejiang Pret New Materials, Shanghai Pret Composite Materials, Shanghai Pret Chemical New Materials, and Shanghai Pret Materials Technology, with each pair sharing a co-filing count of 1. This cluster also extends to SAIC Volkswagen Automotive Co., Ltd., pointing to an automotive supply-chain orientation.
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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.
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