Carbon fiber precursor fiber, fiber for carbon fiber precursor fiber, method of producing carbon fiber precursor fiber, method of producing stabilized fiber, and method of producing carbon fiber
US-12503795-B2 · Dec 23, 2025 · US
containing carboxylic groups · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D06M15/6433 |
| Official title | {containing carboxylic groups} |
| Display label | containing carboxylic groups |
| Total patents | 33 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 4 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-12503795-B2 · Dec 23, 2025 · US
US-2025277336-A1 · Sep 4, 2025 · US
US-2025043147-A1 · Feb 6, 2025 · US
US-2025011510-A1 · Jan 9, 2025 · US
US-2024181120-A1 · Jun 6, 2024 · US
US-2024183104-A1 · Jun 6, 2024 · US
US-2024092960-A1 · Mar 21, 2024 · US
US-2024068158-A1 · Feb 29, 2024 · US
US-2024058249-A1 · Feb 22, 2024 · US
US-11905452-B2 · Feb 20, 2024 · US
US-11845914-B2 · Dec 19, 2023 · US
US-2023295380-A1 · Sep 21, 2023 · US
US-11649416-B2 · May 16, 2023 · US
US-2023126217-A1 · Apr 27, 2023 · US
US-11597840-B2 · Mar 7, 2023 · US
US-2022251306-A1 · Aug 11, 2022 · US
US-11214920-B2 · Jan 4, 2022 · US
US-11046917-B2 · Jun 29, 2021 · US
US-2021171875-A1 · Jun 10, 2021 · US
US-2021163744-A1 · Jun 3, 2021 · US
Answers are generated from the same data shown on this page.