Pressurized oil system powered by two-stroke engine
US-2026043341-A1 · Feb 12, 2026 · US
Piston pumps
Piston pumps · 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 | F01M2001/023 |
| Official title | {Piston pumps} |
| Display label | Piston pumps |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 7 |
| 2017 | 1 |
| 2018 | 7 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Pressurized oil system powered by two-stroke engine
US-12467391-B2 · Nov 11, 2025 · US
Pump element for lubricant
US-2025297561-A1 · Sep 25, 2025 · US
Pressurized oil system powered by two-stroke engine
US-2024344469-A1 · Oct 17, 2024 · US
Pressurized oil system powered by two-stroke engine
US-12055076-B2 · Aug 6, 2024 · US
Pressurized oil system powered by two-stroke engine
US-2023323799-A1 · Oct 12, 2023 · US
Pressurized oil system powered by two-stroke engine
US-11702965-B2 · Jul 18, 2023 · US
Pressurized oil system powered by two-stroke engine
US-2022162969-A1 · May 26, 2022 · US
Pressurized oil system powered by two-stroke engine
US-11255231-B2 · Feb 22, 2022 · US
Pump comprising a spring
US-11143181-B2 · Oct 12, 2021 · US
Controllable lubricating oil delivery system for internal combustion engines
US-11066967-B2 · Jul 20, 2021 · US
Controllable lubricating oil delivery system for internal combustion engines
US-2021148259-A1 · May 20, 2021 · US
Variable oil pump
US-10815845-B2 · Oct 27, 2020 · US
Continuously variable transmission and method for controlling continuously variable transmission
US-10815846-B2 · Oct 27, 2020 · US
Hydraulic control apparatus and hydraulic control method
US-10801494-B2 · Oct 13, 2020 · US
Lubricant pump
US-10590921-B2 · Mar 17, 2020 · US
Continuously variable transmission and method for controlling continuously variable transmission
US-2020063613-A1 · Feb 27, 2020 · US
Drive system and associated motor vehicle
US-10513953-B2 · Dec 24, 2019 · US
Oil system with clog resistant oil filter
US-10385741-B2 · Aug 20, 2019 · US
Variable oil pump
US-2019234255-A1 · Aug 1, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01M2001/023?
- CPC F01M2001/023 is the Cooperative Patent Classification code for “Piston pumps.”
- How many patents are filed under CPC F01M2001/023 (Piston pumps)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC F01M2001/023 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).