- 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 8/50 - Nitriding of ferrous surfaces
Patent holdings for IPC class C23C 8/50
Total number of patents in this class: 85
10-year publication summary
12
|
2
|
9
|
8
|
4
|
8
|
7
|
1
|
2
|
1
|
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 |
Nihon Parkerizing Co., Ltd. | 274 |
9 |
Nippon Steel Corporation | 5649 |
5 |
H.e.f. | 127 |
3 |
Kabushiki Kaisha Riken | 265 |
3 |
Regents of the University of Minnesota | 2620 |
3 |
Hydromecanique et Frottement | 86 |
3 |
Toyota Motor Corporation | 28582 |
2 |
GM Global Technology Operations LLC | 13620 |
2 |
Caterpillar Inc. | 8877 |
2 |
Whirlpool Corporation | 4238 |
2 |
NTN Corporation | 5008 |
2 |
Durferrit GmbH | 39 |
2 |
ThyssenKrupp Rasselstein GmbH | 72 |
2 |
Honda Motor Co., Ltd. | 24537 |
1 |
Seiko Epson Corporation | 18724 |
1 |
Nissan Motor Co., Ltd. | 12249 |
1 |
Schaeffler Technologies GmbH & Co. KG | 846 |
1 |
JTEKT Corporation | 2423 |
1 |
CNK Co., Ltd. | 3 |
1 |
Other owners | 27 |