- All sections
- C - Chemistrymetallurgy
- C23C - Coating metallic materialcoating material with metallic materialsurface treatment of metallic material by diffusion into the surface, by chemical conversion or substitutioncoating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general
- C23C 8/08 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
Patent holdings for IPC class C23C 8/08
Total number of patents in this class: 89
10-year publication summary
|
7
|
9
|
4
|
5
|
9
|
5
|
7
|
6
|
3
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Showa Denko K.K. | 2194 |
4 |
| Michelin Recherche et Technique S.A. | 2155 |
3 |
| Air Water Inc. | 150 |
3 |
| China University of Petroleum (East China) | 383 |
3 |
| Entegris, Inc. | 1899 |
3 |
| Swagelok Company | 318 |
3 |
| Compagnie Generale des Etablissements Michelin | 4766 |
3 |
| Resonac Corporation | 2917 |
3 |
| Apple Inc. | 55640 |
2 |
| Arcam AB | 202 |
2 |
| Audi AG | 7377 |
2 |
| Central Glass Company, Limited | 1274 |
2 |
| Hyundai Steel Company | 443 |
2 |
| Kanto Denka Kogyo Co., Ltd. | 140 |
2 |
| MPS Micro Precision Systems AG | 26 |
2 |
| BWT LLC, DBA Bluewater Thermal Solutions | 5 |
2 |
| Atomic Energy of Canada Limited / Énergie Atomique du Canada limitée | 104 |
2 |
| Schlumberger Technology Corporation | 10914 |
1 |
| Sony Corporation | 30910 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8813 |
1 |
| Other owners | 43 |