Piston ring and method for manufacturing a piston ring
US-2026049659-A1 · Feb 19, 2026 · US
piston rings from one piece
piston rings from one piece · 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 | B23P15/06 |
| Official title | piston rings from one piece |
| Display label | piston rings from one piece |
| Total patents | 39 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 8 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compression Ring Having Butt Seal, and Method
US-2024376982-A1 · Nov 14, 2024 · US
Wire for piston ring, and manufacturing method of piston ring
US-11603929-B2 · Mar 14, 2023 · US
Piston ring and method for manufacturing a piston ring
US-2022333687-A1 · Oct 20, 2022 · US
Wire for piston ring, and manufacturing method of piston ring
US-2022145990-A1 · May 12, 2022 · US
Piston ring and method for manufacturing a piston ring
US-11162587-B2 · Nov 2, 2021 · US
Piston ring with inlaid DLC coating and method of manufacturing
US-11060608-B2 · Jul 13, 2021 · US
Method for producing a piston ring
US-11060609-B2 · Jul 13, 2021 · US
Method for producing piston ring with recess
US-11047479-B2 · Jun 29, 2021 · US
Magnetorheological support method for blisk processing
US-10946459-B2 · Mar 16, 2021 · US
Magnetorheological support method for blisk processing
US-2020376571-A1 · Dec 3, 2020 · US
Piston ring with inlaid dlc coating and method of manufacturing
US-2020256466-A1 · Aug 13, 2020 · US
Method for producing a piston ring
US-2020141492-A1 · May 7, 2020 · US
Method for producing piston ring with recess
US-2020080638-A1 · Mar 12, 2020 · US
Method for producing piston ring with recess
US-10514097-B2 · Dec 24, 2019 · US
Piston ring and method for manufacturing a piston ring
US-2019368607-A1 · Dec 5, 2019 · US
Rotors and methods of making the same
US-10480332-B2 · Nov 19, 2019 · US
Inlaid ring with plated lateral side
US-10428945-B2 · Oct 1, 2019 · US
Piston ring and method for manufacturing a piston ring
US-2019264809-A1 · Aug 29, 2019 · US
Piston ring and method for manufacturing a piston ring
US-10323747-B2 · Jun 18, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B23P15/06?
- CPC B23P15/06 is the Cooperative Patent Classification code for “piston rings from one piece.”
- How many patents are filed under CPC B23P15/06 (piston rings from one piece)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC B23P15/06 growing?
- Publication counts under this code: 1 in 2023 vs 1 in 2024 (latest complete years).