Roots pump
US-12188474-B2 · Jan 7, 2025 · US
essentially without removing material
essentially without removing material · 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 | F04C2230/20 |
| Official title | essentially without removing material |
| Display label | essentially without removing material |
| Total patents | 66 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 5 |
| 2017 | 6 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 11 |
| 2021 | 8 |
| 2022 | 8 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rotor engine side housing and method for producing the same
US-12123341-B1 · Oct 22, 2024 · US
Rotor engine side housing and method for producing the same
US-2024337212-A1 · Oct 10, 2024 · US
Scroll compressor with intermediate injection
US-2024287985-A1 · Aug 29, 2024 · US
Roots pump
US-2024287986-A1 · Aug 29, 2024 · US
Rotor for a rotary engine
US-11976559-B1 · May 7, 2024 · US
A counterweight for a scroll compressor
US-2023407869-A1 · Dec 21, 2023 · US
Method for producing shaped article and shaped article
US-11772196-B2 · Oct 3, 2023 · US
Fixed scroll disk and scroll compressor having the same
US-11767844-B2 · Sep 26, 2023 · US
Method of making a two-piece counterweight for a scroll compressor
US-11598336-B2 · Mar 7, 2023 · US
Crosslinked fluororesin-coated pump rotor manufacturing method, crosslinked fluororesin-coated pump rotor, crosslinked fluororesin-coated pump cover manufacturing method, and crosslinked fluororesin-coated pump cover
US-2022389928-A1 · Dec 8, 2022 · US
Thermal and sound optimized lattice-cored additive manufactured compressor components
US-11448221-B2 · Sep 20, 2022 · US
Screw rotor, fluid machine main body, and fluid machine
US-11415134-B2 · Aug 16, 2022 · US
Method of forming stators for downhole motors
US-11319753-B2 · May 3, 2022 · US
Fixed scroll disk and scroll compressor having the same
US-2022065245-A1 · Mar 3, 2022 · US
Pump end plate manufacturing method and pump
US-11255330-B2 · Feb 22, 2022 · US
Lattice-cored additive manufactured compressor components with fluid delivery features
US-11248595-B2 · Feb 15, 2022 · US
Cylindrical symmetric volumetric machine
US-11225964-B2 · Jan 18, 2022 · US
Mud motor stators and pumps and method of making
US-11192211-B2 · Dec 7, 2021 · US
Method for forming a mud motor stator
US-11148327-B2 · Oct 19, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C2230/20?
- CPC F04C2230/20 is the Cooperative Patent Classification code for “essentially without removing material.”
- How many patents are filed under CPC F04C2230/20 (essentially without removing material)?
- Our database includes 66 publications tagged with this CPC code.
- Is patent activity under CPC F04C2230/20 growing?
- Publication counts under this code: 5 in 2024 vs 7 in 2025 (latest complete years).