Sealant application system
US-2024287987-A1 · Aug 29, 2024 · 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 | F04C2/18 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 347 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 31 |
| 2016 | 31 |
| 2017 | 36 |
| 2018 | 47 |
| 2019 | 32 |
| 2020 | 41 |
| 2021 | 33 |
| 2022 | 21 |
| 2023 | 31 |
| 2024 | 23 |
| 2025 | 18 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
A rotary positive displacement pump with a guard
US-2024052831-A1 · Feb 15, 2024 · US
Variable delivery external gear machine
US-2016369795-A1 · Dec 22, 2016 · US
Medical injection systems and pumps
US-9511186-B1 · Dec 6, 2016 · US
Fluid working systems
US-2016327038-A1 · Nov 10, 2016 · US
Gear pump driven gear stationary bearing
US-9488174-B2 · Nov 8, 2016 · US
Gear pump drive gear stationary bearing
US-9488171-B2 · Nov 8, 2016 · US
Gear pump, pumping apparatus including the same, and aircraft fuel system including gear pump
US-9482225-B2 · Nov 1, 2016 · US
Gear pump or motor
US-2016290336-A1 · Oct 6, 2016 · US
Tandem electric pump
US-2016281712-A1 · Sep 29, 2016 · US
Gear pump drive gear pressure loaded bearing
US-9453506-B2 · Sep 27, 2016 · US
Pump apparatus and marine vessel propelling machine
US-2016265526-A1 · Sep 15, 2016 · US
Pump device and ship propulsion machine
US-2016265358-A1 · Sep 15, 2016 · US
Compensated barrier and lubrication fluids pressure regulation system for a subsea motor and pump module
US-9435330-B2 · Sep 6, 2016 · US
Method for Operating a Gear Pump, and Gear Pump
US-2016230620-A1 · Aug 11, 2016 · US
Vehicle hydraulic supply apparatus
US-2016230756-A1 · Aug 11, 2016 · US
Electric Oil Pump
US-2016215776-A1 · Jul 28, 2016 · US
Bearing faces with fluid channels for gear pumps
US-2016208611-A1 · Jul 21, 2016 · US
Miniature high pressure pump and electrical hydraulic actuation system
US-2016201694-A1 · Jul 14, 2016 · US
Hydraulic device
US-2016169225-A1 · Jun 16, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C2/18?
- CPC F04C2/18 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F04C2/18 (Mechanical Engineering)?
- Our database includes 347 publications tagged with this CPC code.
- Is patent activity under CPC F04C2/18 growing?
- Publication counts under this code: 23 in 2024 vs 18 in 2025 (latest complete years).