Refrigeration system with a scroll machine having a plate inserted in a base of the scroll machine
US-12510073-B2 · Dec 30, 2025 · US
Liners
Liners · 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 | F04C2240/802 |
| Official title | Liners |
| Display label | Liners |
| Total patents | 48 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 7 |
| 2017 | 6 |
| 2018 | 1 |
| 2019 | 5 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 1 |
| 2024 | 7 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Screw pump and its components
US-2025361863-A1 · Nov 27, 2025 · US
Screw pump and its components
US-2025354551-A1 · Nov 20, 2025 · US
Non-lubricated compressor with abradable sealing element and related method for assembling it
US-12345262-B2 · Jul 1, 2025 · US
Scroll compressor
US-12281653-B2 · Apr 22, 2025 · US
Eccentric screw pump with a pressure chamber between an elastomeric stator portion and a casing
US-12215689-B2 · Feb 4, 2025 · US
Rotary engine rotor and method
US-12180884-B2 · Dec 31, 2024 · US
Non-lubricated compressor with abradable sealing element and related method for assembling it
US-2024426300-A1 · Dec 26, 2024 · US
Electric compressor
US-12173711-B2 · Dec 24, 2024 · US
Scroll compressor
US-2024376895-A1 · Nov 14, 2024 · US
Electric compressor
US-2024280104-A1 · Aug 22, 2024 · US
Rotary engine rotor and method
US-2024141826-A1 · May 2, 2024 · US
Scroll machine and refrigeration system
US-2024060492-A1 · Feb 22, 2024 · US
Pump comprising an axially acting spring gasket
US-11808263-B2 · Nov 7, 2023 · US
Rotary pump
US-2022403841-A1 · Dec 22, 2022 · US
Rotary pump
US-2022389925-A1 · Dec 8, 2022 · US
Eccentric screw pump
US-2022389926-A1 · Dec 8, 2022 · US
Load balanced power section of progressing cavity device
US-11519381-B2 · Dec 6, 2022 · US
Scroll compressor having wear preventing member located between key portion of orbiting scroll and key of Oldham ring
US-11401937-B2 · Aug 2, 2022 · US
Metal felt and brush structures as sealing elements in metal-metal mud motors
US-2022034314-A1 · Feb 3, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C2240/802?
- CPC F04C2240/802 is the Cooperative Patent Classification code for “Liners.”
- How many patents are filed under CPC F04C2240/802 (Liners)?
- Our database includes 48 publications tagged with this CPC code.
- Is patent activity under CPC F04C2240/802 growing?
- Publication counts under this code: 7 in 2024 vs 6 in 2025 (latest complete years).