Precursor compositions comprising a polymeric material, a bromine-containing flame retardant, and antimony trioxide
US-2026078210-A1 · Mar 19, 2026 · US
Liners, e.g. inhibitors
Liners, e.g. inhibitors · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F02K9/346 |
| Official title | {Liners, e.g. inhibitors} |
| Display label | Liners, e.g. inhibitors |
| Total patents | 39 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2018 | 4 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Precursor compositions for an insulation and related methods
US-12560135-B2 · Feb 24, 2026 · US
Method for assembling a first metal part with a second part made of an organic matrix composite material
US-12496783-B2 · Dec 16, 2025 · US
Vacuum insulated blast tube
US-12372049-B2 · Jul 29, 2025 · US
Vacuum insulated blast tube
US-2025101933-A1 · Mar 27, 2025 · US
Hybrid metal composite structures, joint structures, and related methods
US-12173670-B2 · Dec 24, 2024 · US
Heavy inert gas insulated blast tube
US-12065990-B1 · Aug 20, 2024 · US
Precursor formulations for a liner, a rocket motor including the liner, and related methods
US-11920541-B2 · Mar 5, 2024 · US
Structure for assembling a piece comprising a first metal part and a second part made of an organic matrix composite material
US-11904387-B2 · Feb 20, 2024 · US
Multi-stage propellant systems, assemblies, and methods
US-11884408-B2 · Jan 30, 2024 · US
Impregnated fibers comprising preceramic resin formulations, and related composite materials and methods
US-11773029-B2 · Oct 3, 2023 · US
Precursor compositions for an insulation and related methods
US-2023287848-A1 · Sep 14, 2023 · US
Rocket motor with embedded burnable cutting explosive energetic material
US-11732676-B1 · Aug 22, 2023 · US
Method for assembling a first metal part with a second part made of an organic matrix composite material, and piece made from such an assembly
US-2023202121-A1 · Jun 29, 2023 · US
Structure for assembling a piece comprising a first metal part and a second part made of an organic matrix composite material
US-2023184199-A1 · Jun 15, 2023 · US
Multi-stage propellant systems, assemblies, and methods
US-2023166851-A1 · Jun 1, 2023 · US
Article with cooling holes and method of forming the same
US-2022316706-A1 · Oct 6, 2022 · US
Article with cooling holes and method of forming the same
US-11441778-B2 · Sep 13, 2022 · US
Precursor compositions for an insulation and insulated rocket motors
US-11306683-B2 · Apr 19, 2022 · US
Precursor formulations for a liner, a rocket motor including the liner, and related methods
US-2022065197-A1 · Mar 3, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02K9/346?
- CPC F02K9/346 is the Cooperative Patent Classification code for “Liners, e.g. inhibitors.”
- How many patents are filed under CPC F02K9/346 (Liners, e.g. inhibitors)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC F02K9/346 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).