Fuel cell separator and coating method for fuel cell separator
US-10876203-B2 · Dec 29, 2020 · US
using ionised gases, e.g. ionitriding
using ionised gases, e.g. ionitriding · 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 | C23C8/36 |
| Official title | using ionised gases, e.g. ionitriding |
| Display label | using ionised gases, e.g. ionitriding |
| Total patents | 167 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 7 |
| 2017 | 14 |
| 2018 | 8 |
| 2019 | 17 |
| 2020 | 16 |
| 2021 | 18 |
| 2022 | 25 |
| 2023 | 17 |
| 2024 | 18 |
| 2025 | 13 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrode plate and surface treatment method thereof
US-2020381700-A1 · Dec 3, 2020 · US
Brake disc and method for producing same
US-10830299-B2 · Nov 10, 2020 · US
Applications of diffusion hardening techniques
US-10512544-B2 · Dec 24, 2019 · US
Microwave plasma generating device for plasma oxidation of sic
US-2019362945-A1 · Nov 28, 2019 · US
Plasma nitriding apparatus
US-10443117-B2 · Oct 15, 2019 · US
Method and system for die compensation and restoration using high-velocity oxy-fuel thermal spray coating and plasma ion nitriding
US-10407776-B2 · Sep 10, 2019 · US
Fuel cell separator and coating method for fuel cell separator
US-2019264321-A1 · Aug 29, 2019 · US
Method and Apparatus for Depositing Diamond-Like Carbon Coatings
US-2019256973-A1 · Aug 22, 2019 · US
Coating system for tubular gripping components
US-10370754-B2 · Aug 6, 2019 · US
High pressure ammonia nitridation of tunnel oxide for 3dnand applications
US-2019203332-A1 · Jul 4, 2019 · US
Fuel cell separator and coating method of seperator for fuel cell separator
US-10329665-B2 · Jun 25, 2019 · US
Collet chuck for clamping a dental tool and method for manufacturing such a collet chuck
US-2019161818-A1 · May 30, 2019 · US
Production Method and Production Device for Nitrogen Compound
US-2019153617-A1 · May 23, 2019 · US
Brake Disc and Method for Producing Same
US-2019145474-A1 · May 16, 2019 · US
Core for high-temperature shaping of a metal part and manufacturing process
US-2019143396-A1 · May 16, 2019 · US
Coating system for tubular gripping components
US-2019136362-A1 · May 9, 2019 · US
Aluminium-based coating for steel sheets or steel strips and method for the production thereof
US-2019040513-A1 · Feb 7, 2019 · US
Solder material, solder joint, and method of manufacturing the solder material
US-10173287-B2 · Jan 8, 2019 · US
External element made of zirconia with selectively conductive zones for electronic applications
US-2019004481-A1 · Jan 3, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C23C8/36?
- CPC C23C8/36 is the Cooperative Patent Classification code for “using ionised gases, e.g. ionitriding.”
- How many patents are filed under CPC C23C8/36 (using ionised gases, e.g. ionitriding)?
- Our database includes 167 publications tagged with this CPC code.
- Is patent activity under CPC C23C8/36 growing?
- Publication counts under this code: 18 in 2024 vs 13 in 2025 (latest complete years).