Rotary engine with seal having elastomeric member and shield
US-12421912-B2 · Sep 23, 2025 · US
Thermal properties
Thermal properties · 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 | F05C2251/04 |
| Official title | Thermal properties |
| Display label | Thermal properties |
| Total patents | 35 |
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 | 4 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Screw rotor and method for manufacturing such screw rotor
US-12129850-B2 · Oct 29, 2024 · US
Rotary engine with seal having elastomeric member and shield
US-2024318611-A1 · Sep 26, 2024 · US
Vacuum pump protection against deposition byproduct buildup
US-12087561-B2 · Sep 10, 2024 · US
Vacuum pump protection against deposition byproduct buildup
US-2023317437-A1 · Oct 5, 2023 · US
Vacuum pump protection against deposition byproduct buildup
US-11710623-B2 · Jul 25, 2023 · US
Twin-shaft pumps with thermal breaks
US-11542946-B2 · Jan 3, 2023 · US
Variable lubricant vane pump
US-11396811-B2 · Jul 26, 2022 · US
Screw rotor and method for manufacturing such screw rotor
US-2022128054-A1 · Apr 28, 2022 · US
Compression-ignition internal combustion engine
US-11300046-B2 · Apr 12, 2022 · US
Bearing member
US-11231067-B2 · Jan 25, 2022 · US
Vacuum pump protection against deposition byproduct buildup
US-2021257195-A1 · Aug 19, 2021 · US
Bearing member
US-2021239156-A1 · Aug 5, 2021 · US
Vacuum pump protection against deposition byproduct buildup
US-11031215-B2 · Jun 8, 2021 · US
Variable lubricant vane pump
US-2020300092-A1 · Sep 24, 2020 · US
Scroll compressor with coated sliding surface
US-10711783-B2 · Jul 14, 2020 · US
Twin-shaft pumps
US-2020124050-A1 · Apr 23, 2020 · US
Vacuum pump protection against deposition byproduct buildup
US-2020105509-A1 · Apr 2, 2020 · US
Method for producing a blade for a turbomachine
US-10583521-B2 · Mar 10, 2020 · US
Compression-ignition internal combustion engine
US-2020011236-A1 · Jan 9, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F05C2251/04?
- CPC F05C2251/04 is the Cooperative Patent Classification code for “Thermal properties.”
- How many patents are filed under CPC F05C2251/04 (Thermal properties)?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC F05C2251/04 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).