Rotary positive displacement pump with a guard
US-12228133-B2 · Feb 18, 2025 · US
Mechanical Engineering
Mechanical Engineering · 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 | F04C2/12 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 29 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 9 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rotary positive displacement pump
US-12140142-B2 · Nov 12, 2024 · US
Gear pump
US-2024300299-A1 · Sep 12, 2024 · US
Spring retainer for gear pump bearing plate
US-2024301878-A1 · Sep 12, 2024 · US
Torque transfer gear pump
US-12025131-B2 · Jul 2, 2024 · US
Spring retainer for gear pump bearing plate
US-11988209-B2 · May 21, 2024 · US
Horizontal type rotary compressor and home appliance including the same
US-11953001-B2 · Apr 9, 2024 · US
A rotary positive displacement pump with a guard
US-2024052831-A1 · Feb 15, 2024 · US
A rotary positive displacement pump
US-2024052834-A1 · Feb 15, 2024 · US
Torque transfer gear pump
US-2024044331-A1 · Feb 8, 2024 · US
Gerotor and pump apparatus having a gerotor device
US-2023287884-A1 · Sep 14, 2023 · US
Spring retainer for gear pump bearing plate
US-2023175503-A1 · Jun 8, 2023 · US
Horizontal type rotary compressor and home appliance including the same
US-2023021042-A1 · Jan 19, 2023 · US
Electric oil pump for hydraulic control and oil supplying system provided with the same
US-11549509-B2 · Jan 10, 2023 · US
Method of monitoring a volume index valve of a compressor and diagnostic system
US-11460024-B2 · Oct 4, 2022 · US
Method of monitoring a volume index valve of a compressor and diagnostic system
US-2021381505-A1 · Dec 9, 2021 · US
Electric oil pump for hydraulic control and oil supplying system provided with the same
US-2020309121-A1 · Oct 1, 2020 · US
Hydraulic circuit system for forced regeneration of diesel particulate filter
US-10480367-B2 · Nov 19, 2019 · US
Simplified roots-type blower
US-2019136859-A1 · May 9, 2019 · US
Pump Assembly Having an Axial-Flux Electric Drive
US-2019055941-A1 · Feb 21, 2019 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C2/12?
- CPC F04C2/12 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F04C2/12 (Mechanical Engineering)?
- Our database includes 29 publications tagged with this CPC code.
- Is patent activity under CPC F04C2/12 growing?
- Publication counts under this code: 9 in 2024 vs 1 in 2025 (latest complete years).