- 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: 538
10-year publication summary
|
55
|
44
|
46
|
37
|
30
|
30
|
23
|
22
|
24
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7562 |
13 |
| Regents of the University of Minnesota | 2792 |
13 |
| Robert Bosch GmbH | 44209 |
12 |
| H.e.f. | 114 |
11 |
| Hydromecanique et Frottement | 127 |
11 |
| ArcelorMittal | 2688 |
10 |
| Nippon Steel Corporation | 6911 |
10 |
| NTN Corporation | 4918 |
9 |
| Safran Aircraft Engines | 6716 |
9 |
| Denso Corporation | 25607 |
8 |
| Applied Materials, Inc. | 20438 |
8 |
| Aisin AW Co., Ltd. | 2252 |
8 |
| ECM Technologies | 35 |
7 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
7 |
| Hyundai Motor Company | 24745 |
6 |
| Aktiebolaget SKF | 3134 |
6 |
| Peugeot Citroen Automobiles SA | 1657 |
6 |
| Safran Transmission Systems | 376 |
6 |
| Federal-Mogul Burscheid GmbH | 275 |
5 |
| NHK Spring Co., Ltd. | 1986 |
5 |
| Other owners | 368 |