Heat treat production fixture
US-10155999-B2 · Dec 18, 2018 · US
Nitriding
Nitriding · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C23C8/24 |
| Official title | Nitriding |
| Display label | Nitriding |
| Total patents | 249 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 18 |
| 2017 | 19 |
| 2018 | 19 |
| 2019 | 26 |
| 2020 | 25 |
| 2021 | 25 |
| 2022 | 29 |
| 2023 | 24 |
| 2024 | 29 |
| 2025 | 18 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Durable cosmetic finishes for titanium surfaces
US-10151021-B2 · Dec 11, 2018 · US
Chain component and chain
US-2018283496-A1 · Oct 4, 2018 · US
Highly thermostable rare-earth permanent magnetic material, preparation method thereof and magnet containing the same
US-2018268971-A1 · Sep 20, 2018 · US
Weldless transfer tube assembly
US-10066770-B2 · Sep 4, 2018 · US
Photocatalyst for water splitting, production method for same, and photoelectrode for water splitting
US-10022713-B2 · Jul 17, 2018 · US
Surface nitriding treatment method of titanium material
US-2018155816-A1 · Jun 7, 2018 · US
Method for manufacturing endless metal belt, endless metal belt, and belt-type continuously variable transmission
US-9982749-B2 · May 29, 2018 · US
Titanium alloy member and production method therefor
US-9920399-B2 · Mar 20, 2018 · US
Pump used in gasification system
US-9909217-B2 · Mar 6, 2018 · US
Preservation of strain in iron nitride magnet
US-2017365381-A1 · Dec 21, 2017 · US
Titanium alloy member and method for manufacturing the same
US-2017356076-A1 · Dec 14, 2017 · US
Effective and novel design for lower particle count and better wafer quality by diffusing the flow inside the chamber
US-2017349994-A1 · Dec 7, 2017 · US
Method for forming binder-free refractory carbide, nitride and boride coatings with a controlled porosity
US-2017335442-A1 · Nov 23, 2017 · US
High temperature nitriding of titanium parts
US-9790583-B2 · Oct 17, 2017 · US
Surface layer hardened metal material and surface layer hardening method
US-9777363-B2 · Oct 3, 2017 · US
Reactive deposition systems and associated methods
US-2017247785-A1 · Aug 31, 2017 · US
Valve and method for producing a valve
US-2017218906-A1 · Aug 3, 2017 · US
Method and apparatus for producing powder and method for manufacturing shaped object
US-2017165748-A1 · Jun 15, 2017 · US
Method for manufacturing a titanium alloy for biomedical devices
US-9677162-B2 · Jun 13, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C8/24?
- CPC C23C8/24 is the Cooperative Patent Classification code for “Nitriding.”
- How many patents are filed under CPC C23C8/24 (Nitriding)?
- Our database includes 249 publications tagged with this CPC code.
- Is patent activity under CPC C23C8/24 growing?
- Publication counts under this code: 29 in 2024 vs 18 in 2025 (latest complete years).