- All sections
- C - Chemistrymetallurgy
- C23C - Coating metallic materialcoating material with metallic materialsurface treatment of metallic material by diffusion into the surface, by chemical conversion or substitutioncoating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general
- C23C 8/80 - After-treatment
Patent holdings for IPC class C23C 8/80
Total number of patents in this class: 530
10-year publication summary
|
55
|
42
|
44
|
35
|
27
|
29
|
19
|
21
|
18
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7138 |
13 |
| Regents of the University of Minnesota | 2755 |
13 |
| Robert Bosch GmbH | 43187 |
12 |
| H.e.f. | 115 |
11 |
| NTN Corporation | 4953 |
10 |
| Nippon Steel Corporation | 6564 |
10 |
| Hydromecanique et Frottement | 117 |
10 |
| Safran Aircraft Engines | 6454 |
9 |
| Denso Corporation | 24933 |
8 |
| Aisin AW Co., Ltd. | 2295 |
8 |
| ArcelorMittal | 2437 |
8 |
| Applied Materials, Inc. | 19502 |
7 |
| Nippon Steel & Sumitomo Metal Corporation | 1985 |
7 |
| Hyundai Motor Company | 23093 |
6 |
| Aktiebolaget SKF | 3033 |
6 |
| ECM Technologies | 30 |
6 |
| Peugeot Citroen Automobiles SA | 1723 |
6 |
| Federal-Mogul Burscheid GmbH | 281 |
5 |
| NHK Spring Co., Ltd. | 1915 |
5 |
| POSCO Co., Ltd. | 1618 |
5 |
| Other owners | 365 |