Foam proportional mixing device
US-2026000925-A1 · Jan 1, 2026 · US
with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type · 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 | F04C2/126 |
| Official title | {with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type} |
| Display label | with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type |
| Total patents | 55 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 6 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 9 |
| 2021 | 5 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 4 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Foam proportional mixing device
US-12415104-B2 · Sep 16, 2025 · US
Electromotive oil pump comprising a non-return valve
US-12305639-B2 · May 20, 2025 · US
Roots pump
US-12188474-B2 · Jan 7, 2025 · US
Rotary positive displacement pump
US-12140142-B2 · Nov 12, 2024 · US
Roots pump
US-2024287986-A1 · Aug 29, 2024 · US
Rotary positive displacement pump
US-12060882-B2 · Aug 13, 2024 · US
A rotary positive displacement pump
US-2024052834-A1 · Feb 15, 2024 · US
Foam proportional mixing device
US-2023405377-A1 · Dec 21, 2023 · US
Fluid working systems
US-11655816-B2 · May 23, 2023 · US
Split power gerotor pump
US-11649822-B2 · May 16, 2023 · US
A rotary positive displacement pump
US-2023138342-A1 · May 4, 2023 · US
Fluid working systems
US-11499552-B2 · Nov 15, 2022 · US
Split Power Gerotor Pump
US-2022252066-A1 · Aug 11, 2022 · US
Method of operating a four stroke internal combustion engine system
US-11408330-B2 · Aug 9, 2022 · US
Motor-driven roots pump with smooth activation in low-temperature environment
US-11401936-B2 · Aug 2, 2022 · US
Roots pump having a seal member with first and second projections
US-11353021-B2 · Jun 7, 2022 · US
Method to determine the reasonable design area of rotor profile of roots pump and its application
US-11168682-B2 · Nov 9, 2021 · US
Roots pump
US-2021340979-A1 · Nov 4, 2021 · US
A method of operating a four stroke internal combustion engine system
US-2021131341-A1 · May 6, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C2/126?
- CPC F04C2/126 is the Cooperative Patent Classification code for “with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type.”
- How many patents are filed under CPC F04C2/126 (with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type)?
- Our database includes 55 publications tagged with this CPC code.
- Is patent activity under CPC F04C2/126 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).