Polyamide fine particles and method of producing the same
US-12559597-B2 · Feb 24, 2026 · US
Pyrrolidones or piperidones
Pyrrolidones or piperidones · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C08G69/24 |
| Official title | Pyrrolidones or piperidones |
| Display label | Pyrrolidones or piperidones |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 5 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 7 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Highly spherical polyamide microparticles and synthesis methods related thereto
US-12545762-B2 · Feb 10, 2026 · US
Polyamide resin, polyamide resin composition, molded body and method for producing polyamide resin
US-2025382415-A1 · Dec 18, 2025 · US
Ester-amide multi-block copolymer amd method for producing ester-amide multi-block copolymer, and ester-amide copolymer and method for producing ester-amide copolymer
US-2025361361-A1 · Nov 27, 2025 · US
Polyamide fine particles and method of producing the same
US-2024026090-A1 · Jan 25, 2024 · US
Method of producing polyamide fine particles, and polyamide fine particles
US-11685813-B2 · Jun 27, 2023 · US
Polyamide resin composition, molded polyamide resin article, and production method therefor
US-2023192989-A1 · Jun 22, 2023 · US
Novel polyamide
US-2023142483-A1 · May 11, 2023 · US
Highly spherical polyamide microparticles and synthesis methods related thereto
US-11643503-B2 · May 9, 2023 · US
Highly spherical polyamide microparticles and synthesis methods related thereto
US-2023135781-A1 · May 4, 2023 · US
Method for producing polyamide, and polyamide
US-2022389163-A1 · Dec 8, 2022 · US
Process for the preparation of a reinforced polyamide by extrusion
US-11440231-B2 · Sep 13, 2022 · US
Method for detecting and quantifying additives used in the enhanced recovery of oil and shale gas
US-11313800-B2 · Apr 26, 2022 · US
Polyalkyleneimine-modified polyamide 4
US-2022112335-A1 · Apr 14, 2022 · US
Highly spherical polyamide microparticles and synthesis methods related thereto
US-2022010066-A1 · Jan 13, 2022 · US
Method of producing polyamide fine particles, and polyamide fine particles
US-2021403651-A1 · Dec 30, 2021 · US
Polyamide fine particle, method for producing same, and polyamide fine particle composition
US-11008421-B2 · May 18, 2021 · US
Polyamide particles and method for producing polyamide particles
US-2021047468-A1 · Feb 18, 2021 · US
Polyamide composition and method for producing polyamide composition
US-2020377655-A1 · Dec 3, 2020 · US
Production method for polyamide-4 particles
US-2020262976-A1 · Aug 20, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G69/24?
- CPC C08G69/24 is the Cooperative Patent Classification code for “Pyrrolidones or piperidones.”
- How many patents are filed under CPC C08G69/24 (Pyrrolidones or piperidones)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC C08G69/24 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).