- All sections
- C - Chemistry; metallurgy
- C23C - Coating metallic material; coating material with metallic material; surface treatment of metallic material by diffusion into the surface, by chemical conversion or substitution; coating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general
- C23C 8/00 - Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
Patent holdings for IPC class C23C 8/00
Total number of patents in this class: 149
10-year publication summary
|
10
|
8
|
7
|
7
|
2
|
8
|
7
|
2
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5649 |
6 |
| Smith & Nephew, Inc. | 2685 |
6 |
| Robert Bosch GmbH | 40953 |
5 |
| Voestalpine Stahl GmbH | 311 |
4 |
| ArcelorMittal | 1887 |
3 |
| Sigma-Aldrich Co., LLC | 247 |
3 |
| Swagelok Company | 325 |
3 |
| Schlumberger Technology Corporation | 9690 |
2 |
| Seiko Epson Corporation | 18724 |
2 |
| GM Global Technology Operations LLC | 13620 |
2 |
| California Institute of Technology | 3884 |
2 |
| NTN Corporation | 5008 |
2 |
| Art Metal Mfg. Co., Ltd. | 30 |
2 |
| Federal-Mogul Burscheid GmbH | 284 |
2 |
| Fuji Kihan Co., Ltd. | 25 |
2 |
| IHI Corporation | 3268 |
2 |
| Keystone Investment Corporation | 6 |
2 |
| MAHLE International GmbH | 2670 |
2 |
| Tsubakimoto Chain Co. | 588 |
2 |
| BWT LLC, DBA Bluewater Thermal Solutions | 6 |
2 |
| Other owners | 93 |