- 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 8/80 - After-treatment
Patent holdings for IPC class C23C 8/80
Total number of patents in this class: 493
10-year publication summary
47
|
58
|
55
|
44
|
46
|
37
|
30
|
27
|
18
|
7
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
JFE Steel Corporation | 6067 |
12 |
Nippon Steel Corporation | 5649 |
12 |
Regents of the University of Minnesota | 2620 |
12 |
Robert Bosch GmbH | 40953 |
11 |
H.e.f. | 127 |
11 |
NTN Corporation | 5008 |
10 |
Aisin AW Co., Ltd. | 2430 |
9 |
Denso Corporation | 23338 |
8 |
Nippon Steel & Sumitomo Metal Corporation | 1990 |
7 |
Safran Aircraft Engines | 5739 |
7 |
Aktiebolaget SKF | 2700 |
6 |
ECM Technologies | 29 |
6 |
Peugeot Citroen Automobiles SA | 1903 |
6 |
Suzhou MicroPort OrthoRecon Co., Ltd | 34 |
6 |
Hyundai Motor Company | 19021 |
5 |
Federal-Mogul Burscheid GmbH | 284 |
5 |
NHK Spring Co., Ltd. | 1657 |
5 |
POSCO Co., Ltd. | 1059 |
5 |
Swagelok Company | 325 |
5 |
Rtx Corporation | 8674 |
5 |
Other owners | 340 |