- 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 8/26 - Nitriding of ferrous surfaces
Patent holdings for IPC class C23C 8/26
Total number of patents in this class: 528
10-year publication summary
51
|
66
|
61
|
43
|
37
|
42
|
36
|
32
|
17
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Nippon Steel Corporation | 5649 |
38 |
JFE Steel Corporation | 6067 |
24 |
Robert Bosch GmbH | 40953 |
20 |
Regents of the University of Minnesota | 2620 |
19 |
NTN Corporation | 5008 |
17 |
Nippon Steel & Sumitomo Metal Corporation | 1990 |
15 |
PARKER NETSUSHORI KOGYO Co., Ltd. | 33 |
13 |
Honda Motor Co., Ltd. | 24537 |
11 |
Toyota Motor Corporation | 28582 |
11 |
Denso Corporation | 23338 |
11 |
Swagelok Company | 325 |
11 |
Dowa Thermotech Co., Ltd. | 41 |
10 |
ThyssenKrupp Rasselstein GmbH | 72 |
8 |
Hitachi, Ltd. | 16452 |
7 |
Hyundai Motor Company | 19021 |
7 |
Nihon Parkerizing Co., Ltd. | 274 |
7 |
General Electric Company | 18133 |
6 |
Kia Motors Corporation | 7946 |
6 |
Case Western Reserve University | 1727 |
6 |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
6 |
Other owners | 275 |