Environmentally friendly impregnation systems for fiber surface treatment and preparation methods thereof and an impregnation treatment method
US-12552920-B2 · Feb 17, 2026 · US
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Cyclic amides, e.g. lactams; Amides of oxalic acid
Cyclic amides, e.g. lactams; Amides of oxalic acid · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D06M13/418 |
| Official title | Cyclic amides, e.g. lactams; Amides of oxalic acid |
| Display label | Cyclic amides, e.g. lactams; Amides of oxalic acid |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2018 | 2 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Lactam coated textile
US-12460346-B2 · Nov 4, 2025 · US
Environmentally Friendly Impregnation Systems for Fiber Surface Treatment and Preparation Methods Thereof and an Impregnation Treatment Method
US-2024368388-A1 · Nov 7, 2024 · US
Rubber-reinforcing cord and rubber product using same
US-11932738-B2 · Mar 19, 2024 · US
Fiber-treating agent
US-2024049824-A1 · Feb 15, 2024 · US
Core wire for friction transmission belts, friction transmission belt, and manufacturing methods therefor
US-11815158-B2 · Nov 14, 2023 · US
Rubber-reinforcing cord and rubber product including same
US-11560671-B2 · Jan 24, 2023 · US
Active ingredient preparation for a steam generator
US-2022380973-A1 · Dec 1, 2022 · US
Lactam coated textile
US-2021332526-A1 · Oct 28, 2021 · US
Toothed belt
US-11085505-B2 · Aug 10, 2021 · US
Core wire for friction transmission belts, friction transmission belt, and manufacturing methods therefor
US-2021222755-A1 · Jul 22, 2021 · US
Rubber-reinforcing cord and rubber product including same
US-10913830-B2 · Feb 9, 2021 · US
Toothed belt
US-2020362940-A1 · Nov 19, 2020 · US
Rubber-reinforcing cord and rubber product including same
US-2020208344-A1 · Jul 2, 2020 · US
Rubber-reinforcing cord and rubber product using same
US-2020123333-A1 · Apr 23, 2020 · US
Rubber-reinforcing cord and rubber product including same
US-2018355129-A1 · Dec 13, 2018 · US
Preparation method of yeast cell immobilization medium and application thereof
US-10144925-B2 · Dec 4, 2018 · US
Detection and use of low molecular-weight modulators of the cold-menthol receptor TRPM8
US-9346823-B2 · May 24, 2016 · US
Caprolactam-based fatty amide as gelling additive
US-2016136606-A1 · May 19, 2016 · US
Preparation method of yeast cell immobilization medium and application thereof
US-2016032272-A1 · Feb 4, 2016 · US