- 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 8/38 - Treatment of ferrous surfaces
Patent holdings for IPC class C23C 8/38
Total number of patents in this class: 109
10-year publication summary
11
|
2
|
10
|
10
|
8
|
7
|
0
|
8
|
3
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Nihon Parkerizing Co., Ltd. | 274 |
6 |
JFE Steel Corporation | 6067 |
5 |
Oerlikon Surface Solutions AG, Pfaffikon | 556 |
5 |
Nippon Steel & Sumitomo Metal Corporation | 1990 |
4 |
Honda Motor Co., Ltd. | 24537 |
3 |
GM Global Technology Operations LLC | 13620 |
3 |
Denso Corporation | 23338 |
3 |
NTN Corporation | 5008 |
3 |
Frank's International, LLC | 241 |
3 |
Kabushiki Kaisha Riken | 265 |
3 |
Caterpillar Inc. | 8877 |
2 |
Hyundai Motor Company | 19021 |
2 |
Areva NP | 228 |
2 |
GE Avio S.r.l. | 223 |
2 |
IUCF-HYU (Industry-University Cooperation Foundation Hanyang University) | 1115 |
2 |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
2 |
Miba Sinter Austria GmbH | 101 |
2 |
Neturen Co., Ltd. | 193 |
2 |
Oerlikon Trading AG, Trubbach | 114 |
2 |
Winoa | 29 |
2 |
Other owners | 51 |