- 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 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
Patent holdings for IPC class C23C 28/02
Total number of patents in this class: 1086
10-year publication summary
97
|
102
|
90
|
97
|
100
|
131
|
84
|
83
|
69
|
19
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
ArcelorMittal | 1887 |
60 |
POSCO Co., Ltd. | 1059 |
51 |
Nippon Steel Corporation | 5649 |
48 |
JFE Steel Corporation | 6067 |
33 |
Rtx Corporation | 8674 |
30 |
Siemens AG | 24990 |
26 |
JX Nippon Mining & Metals Corporation | 1576 |
24 |
Sumitomo Electric Industries, Ltd. | 14131 |
19 |
POSCO | 2222 |
19 |
General Electric Company | 18133 |
18 |
ThyssenKrupp Steel Europe AG | 924 |
15 |
Toyo Kohan Co., Ltd. | 413 |
15 |
ArcelorMittal France | 102 |
11 |
Savroc Ltd | 25 |
11 |
Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
9 |
Applied Materials, Inc. | 16587 |
8 |
ArcelorMittal Investigacion y Desarrollo SL | 209 |
7 |
Federal-Mogul Burscheid GmbH | 284 |
7 |
Safran Aircraft Engines | 5739 |
7 |
Heraeus Materials Singapore, PTE., Ltd. | 39 |
7 |
Other owners | 661 |