Insert and method for manufacturing fluid pump
US-12492687-B2 · Dec 9, 2025 · US
Pistons or cylinders
Pistons or cylinders · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B23P6/02 |
| Official title | Pistons or cylinders |
| Display label | Pistons or cylinders |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 7 |
| 2019 | 7 |
| 2020 | 9 |
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thermal sprayed engine block remanufacturing
US-12447492-B1 · Oct 21, 2025 · US
Insert and method for manufacturing fluid pump
US-2025067255-A1 · Feb 27, 2025 · US
Reinforced press base, strengthening ring, and method of reinforcing a press base
US-11878485-B1 · Jan 23, 2024 · US
High pressure press and method of making the same
US-11858230-B1 · Jan 2, 2024 · US
Rotational metering pump for insulin patch
US-11696983-B2 · Jul 11, 2023 · US
Handling device for servicing a piston with a small end attached to the piston via a piston pin
US-11628522-B2 · Apr 18, 2023 · US
Reinforced press base, piston cavity sleeve, and method of reinforcing a press base
US-11524473-B1 · Dec 13, 2022 · US
Systems and methods for adding material to castings
US-2022072616-A1 · Mar 10, 2022 · US
Systems and methods for adding material to castings
US-11203066-B2 · Dec 21, 2021 · US
Machining fixture with quick release lever
US-11198202-B2 · Dec 14, 2021 · US
Handling device for servicing a piston with a small end attached to the piston via a piston pin
US-2021354254-A1 · Nov 18, 2021 · US
Rotational metering pump for insulin patch
US-10967121-B2 · Apr 6, 2021 · US
Repair of cast iron bore inner diameter surfaces
US-10933496-B2 · Mar 2, 2021 · US
Remanufactured engine piston and method
US-10926362-B2 · Feb 23, 2021 · US
Rotational metering pump for insulin patch
US-2020360601-A1 · Nov 19, 2020 · US
Remanufactured engine piston and method
US-2020189045-A1 · Jun 18, 2020 · US
Method of remanufacturing a prechamber assembly
US-10662865-B2 · May 26, 2020 · US
Repair of Cast Iron Bore Inner Diameter Surfaces
US-2020114478-A1 · Apr 16, 2020 · US
Machining fixture with quick release lever
US-2020078892-A1 · Mar 12, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B23P6/02?
- CPC B23P6/02 is the Cooperative Patent Classification code for “Pistons or cylinders.”
- How many patents are filed under CPC B23P6/02 (Pistons or cylinders)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC B23P6/02 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).