Sealing ring assemblies configured for pressure locking
US-11530691-B2 · Dec 20, 2022 · US
Rings for preventing wear of grooves or like seatings
Rings for preventing wear of grooves or like seatings · 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 | F16J9/22 |
| Official title | Rings for preventing wear of grooves or like seatings |
| Display label | Rings for preventing wear of grooves or like seatings |
| Total patents | 80 |
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 | 5 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 11 |
| 2021 | 13 |
| 2022 | 12 |
| 2023 | 5 |
| 2024 | 3 |
| 2025 | 6 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Piston for an internal combustion engine
US-11492997-B2 · Nov 8, 2022 · US
Piston ring and method for manufacturing a piston ring
US-2022333687-A1 · Oct 20, 2022 · US
Flutter-suppression piston ring
US-11371610-B2 · Jun 28, 2022 · US
Piston design feature to minimize periodic second land pressure variation
US-11306678-B1 · Apr 19, 2022 · US
Piston for an internal combustion engine
US-11274747-B2 · Mar 15, 2022 · US
Piston ring
US-11242929-B2 · Feb 8, 2022 · US
Piston for an internal combustion engine
US-2022034280-A1 · Feb 3, 2022 · US
Cylinder of an Internal Combustion Engine
US-2021381597-A1 · Dec 9, 2021 · US
Compressor With Compliant Seal
US-2021372400-A1 · Dec 2, 2021 · US
Piston seal assembly guards and inserts for seal groove
US-2021370447-A1 · Dec 2, 2021 · US
Piston
US-11136936-B2 · Oct 5, 2021 · US
Piston ring
US-2021270370-A1 · Sep 2, 2021 · US
Multiple-piece oil stripping piston ring with reduced friction
US-11092238-B2 · Aug 17, 2021 · US
Piston for an internal combustion engine
US-11054030-B2 · Jul 6, 2021 · US
Piston with keystone second ring groove for high temperature internal combustion engines
US-2021172523-A1 · Jun 10, 2021 · US
Piston
US-2021108593-A1 · Apr 15, 2021 · US
Piston assembly for an internal combustion engine of a motor vehicle
US-2021062916-A1 · Mar 4, 2021 · US
Piston of an internal combustion engine
US-10920886-B2 · Feb 16, 2021 · US
Piston and piston ring for internal combustion engine
US-10914380-B2 · Feb 9, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16J9/22?
- CPC F16J9/22 is the Cooperative Patent Classification code for “Rings for preventing wear of grooves or like seatings.”
- How many patents are filed under CPC F16J9/22 (Rings for preventing wear of grooves or like seatings)?
- Our database includes 80 publications tagged with this CPC code.
- Is patent activity under CPC F16J9/22 growing?
- Publication counts under this code: 3 in 2024 vs 6 in 2025 (latest complete years).