Steel for nitrocarburizing and nitrocarburized component, and methods for producing said steel for nitrocarburizing and said nitrocarburized component
US-10125416-B2 · Nov 13, 2018 · US
Treatment of selected surface areas, e.g. using masks
Treatment of selected surface areas, e.g. using masks · 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 | C23C8/04 |
| Official title | Treatment of selected surface areas, e.g. using masks |
| Display label | Treatment of selected surface areas, e.g. using masks |
| Total patents | 133 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 22 |
| 2017 | 19 |
| 2018 | 10 |
| 2019 | 17 |
| 2020 | 12 |
| 2021 | 9 |
| 2022 | 9 |
| 2023 | 4 |
| 2024 | 6 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for thermochemically treating a part while masking a portion and corresponding mask
US-2018141081-A1 · May 24, 2018 · US
Additive manufacturing processing with oxidation
US-2017370005-A1 · Dec 28, 2017 · US
Nitrogen- and ceramic-surface-treated components for downhole motors and related methods
US-9843244-B2 · Dec 12, 2017 · US
Nitride coated piston ring
US-9829105-B2 · Nov 28, 2017 · US
Roller cone drill bit with improved erosion resistance
US-2017328135-A1 · Nov 16, 2017 · US
Process for removing aluminum-silicon coatings from metallic structures, and related processes for preparing magnetic components
US-9803139-B1 · Oct 31, 2017 · US
Method of making corrosion resistant and glossy appearance coating for light metal workpiece
US-9797036-B2 · Oct 24, 2017 · US
Multiple layer hardness ferrule and method
US-2017276271-A1 · Sep 28, 2017 · US
Vapor deposition mask and organic el display device
US-2017275749-A1 · Sep 28, 2017 · US
Snap fit assembly for a ruggedized multi-section structure with selective embrittlement or case hardening
US-9738948-B2 · Aug 22, 2017 · US
Production method for grain-oriented electrical steel sheet
US-9708682-B2 · Jul 18, 2017 · US
Dual phase magnetic material component and method of forming
US-2017183764-A1 · Jun 29, 2017 · US
Low pressure induction carburization
US-2017130316-A1 · May 11, 2017 · US
Dual phase magnetic material component and method of forming
US-9634549-B2 · Apr 25, 2017 · US
Friction material and methods of making and using the same
US-9581211-B2 · Feb 28, 2017 · US
Snap fit assembly for a ruggedized multi-section structure with selective embrittlement or case hardening
US-2017051374-A1 · Feb 23, 2017 · US
Mask-Less Selective Plating of Leadframe
US-2017051388-A1 · Feb 23, 2017 · US
Method and device of surface-treating a metallic part
US-2017044654-A1 · Feb 16, 2017 · US
Ultraviolet angled spray nozzle
US-9550198-B2 · Jan 24, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C8/04?
- CPC C23C8/04 is the Cooperative Patent Classification code for “Treatment of selected surface areas, e.g. using masks.”
- How many patents are filed under CPC C23C8/04 (Treatment of selected surface areas, e.g. using masks)?
- Our database includes 133 publications tagged with this CPC code.
- Is patent activity under CPC C23C8/04 growing?
- Publication counts under this code: 6 in 2024 vs 7 in 2025 (latest complete years).