Piston ring
US-10006546-B2 · Jun 26, 2018 · US
with layers adapted for cutting tools or wear applications · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C23C28/347 |
| Official title | {with layers adapted for cutting tools or wear applications} |
| Display label | with layers adapted for cutting tools or wear applications |
| Total patents | 220 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 18 |
| 2016 | 15 |
| 2017 | 26 |
| 2018 | 16 |
| 2019 | 20 |
| 2020 | 23 |
| 2021 | 31 |
| 2022 | 20 |
| 2023 | 21 |
| 2024 | 17 |
| 2025 | 12 |
| 2026 | 1 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-10006546-B2 · Jun 26, 2018 · US
US-9834835-B2 · Dec 5, 2017 · US
US-2017335964-A1 · Nov 23, 2017 · US
US-9822322-B2 · Nov 21, 2017 · US
US-9816613-B2 · Nov 14, 2017 · US
US-2017321559-A1 · Nov 9, 2017 · US
US-2017321645-A1 · Nov 9, 2017 · US
US-9803273-B2 · Oct 31, 2017 · US
US-9765726-B2 · Sep 19, 2017 · US
US-9758859-B2 · Sep 12, 2017 · US
US-9759323-B2 · Sep 12, 2017 · US
US-9759322-B2 · Sep 12, 2017 · US
US-2017183782-A1 · Jun 29, 2017 · US
US-2017167483-A1 · Jun 15, 2017 · US
US-9657395-B2 · May 23, 2017 · US
US-2017130841-A1 · May 11, 2017 · US
US-2017122249-A1 · May 4, 2017 · US
US-9617654-B2 · Apr 11, 2017 · US
US-2017081760-A1 · Mar 23, 2017 · US
US-2017073819-A1 · Mar 16, 2017 · US
Answers are generated from the same data shown on this page.