Tool with wear detection
US-12485491-B2 · Dec 2, 2025 · US
Hard, i.e. after being hardened
Hard, i.e. after being hardened · 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 | B23B2228/24 |
| Official title | Hard, i.e. after being hardened |
| Display label | Hard, i.e. after being hardened |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Coated tool and cutting tool
US-2025178098-A1 · Jun 5, 2025 · US
Cutting tool
US-12186812-B2 · Jan 7, 2025 · US
Cutting tool
US-2024383042-A1 · Nov 21, 2024 · US
Method for surface treatment, roller bearing component and device
US-11717922-B2 · Aug 8, 2023 · US
Tool With Wear Detection
US-2023182211-A1 · Jun 15, 2023 · US
Method for surface treatment, roller bearing component and device
US-2022063027-A1 · Mar 3, 2022 · US
Insert Tool
US-2022009008-A1 · Jan 13, 2022 · US
Methods of reducing sinuous flow during machining and products formed thereby
US-11135616-B2 · Oct 5, 2021 · US
Surface-coated cutting tool
US-11059105-B2 · Jul 13, 2021 · US
Multilayer hard film-coated cutting tool
US-11014167-B2 · May 25, 2021 · US
Surface-coated cutting tool
US-11007578-B2 · May 18, 2021 · US
Coated cutting tool
US-10974323-B2 · Apr 13, 2021 · US
Surface-coated cubic boron nitride sintered material tool
US-10744569-B2 · Aug 18, 2020 · US
Coated cutting tool
US-2020198017-A1 · Jun 25, 2020 · US
CVD coated cutting tool
US-10570509-B2 · Feb 25, 2020 · US
Methods of reducing sinuous flow during machining and products formed thereby
US-2020023405-A1 · Jan 23, 2020 · US
Hard turning systems and methods
US-2019388977-A1 · Dec 26, 2019 · US
Methods of reducing sinuous flow during machining and products formed thereby
US-10413934-B2 · Sep 17, 2019 · US
Surface-coated cutting tool
US-2019247930-A1 · Aug 15, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B23B2228/24?
- CPC B23B2228/24 is the Cooperative Patent Classification code for “Hard, i.e. after being hardened.”
- How many patents are filed under CPC B23B2228/24 (Hard, i.e. after being hardened)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC B23B2228/24 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).