Scroll compressor
US-2018363649-A1 · Dec 20, 2018 · US
of the elastic type, e.g. reed valves
of the elastic type, e.g. reed valves · 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 | F04C29/128 |
| Official title | {of the elastic type, e.g. reed valves} |
| Display label | of the elastic type, e.g. reed valves |
| Total patents | 223 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 11 |
| 2017 | 16 |
| 2018 | 24 |
| 2019 | 13 |
| 2020 | 23 |
| 2021 | 23 |
| 2022 | 23 |
| 2023 | 13 |
| 2024 | 37 |
| 2025 | 15 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rotary compressor
US-2018340534-A1 · Nov 29, 2018 · US
Scroll compressor including a discharge port for discharging high-pressure gas provided around the periphery of a rib in the discharge cavity
US-10107290-B2 · Oct 23, 2018 · US
Hermetic compressor
US-2018266419-A1 · Sep 20, 2018 · US
Scroll compressor
US-10072658-B2 · Sep 11, 2018 · US
Motor vehicle vacuum pump
US-2018238331-A1 · Aug 23, 2018 · US
Hermetic compressor
US-2018223844-A1 · Aug 9, 2018 · US
Scroll compressor
US-2018187682-A1 · Jul 5, 2018 · US
Variable Volume Ratio Compressor
US-2018038369-A1 · Feb 8, 2018 · US
Variable Volume Ratio Compressor
US-2018038370-A1 · Feb 8, 2018 · US
Gas compressor
US-2018030833-A1 · Feb 1, 2018 · US
Rotary screw vacuum pumps
US-2018023566-A1 · Jan 25, 2018 · US
Scroll compressor
US-2017342983-A1 · Nov 30, 2017 · US
Rotary compressor
US-2017335848-A1 · Nov 23, 2017 · US
Variable volume ratio compressor
US-9790940-B2 · Oct 17, 2017 · US
Compressor
US-9765780-B2 · Sep 19, 2017 · US
Scroll compressor
US-9765782-B2 · Sep 19, 2017 · US
Gas compressor with discharge section and sub-discharge section
US-9751384-B2 · Sep 5, 2017 · US
Scroll compressor in which a fixed scroll and an orbiting scroll are placed between a partition plate and a main bearing
US-9719511-B2 · Aug 1, 2017 · US
Gas compressor
US-9695691-B2 · Jul 4, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C29/128?
- CPC F04C29/128 is the Cooperative Patent Classification code for “of the elastic type, e.g. reed valves.”
- How many patents are filed under CPC F04C29/128 (of the elastic type, e.g. reed valves)?
- Our database includes 223 publications tagged with this CPC code.
- Is patent activity under CPC F04C29/128 growing?
- Publication counts under this code: 37 in 2024 vs 15 in 2025 (latest complete years).