- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/36 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
Patent holdings for IPC class C22C 38/36
Total number of patents in this class: 127
10-year publication summary
|
22
|
13
|
9
|
8
|
13
|
7
|
5
|
4
|
2
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 1982 |
8 |
| Oerlikon Metco (US) Inc. | 209 |
7 |
| Scoperta, Inc. | 42 |
6 |
| Uddeholms Aktiebolag | 195 |
6 |
| Stoody Company | 16 |
5 |
| VBN Components AB | 16 |
4 |
| Kennametal Inc. | 1387 |
3 |
| JFE Steel Corporation | 6833 |
3 |
| Proterial, Ltd. | 843 |
3 |
| Robert Bosch GmbH | 42674 |
2 |
| Advanced Technology & Materials Co., Ltd. | 32 |
2 |
| Aktiebolaget SKF | 2939 |
2 |
| Erasteel Kloster Aktiebolag | 8 |
2 |
| Federal-Mogul Corporation | 313 |
2 |
| HeYe Special Steel Co. Ltd | 7 |
2 |
| Höganäs AB | 308 |
2 |
| The Japan Steel Works, Ltd. | 741 |
2 |
| L.E. Jones Company, LLC | 18 |
2 |
| MacLean-Fogg Company | 101 |
2 |
| The NanoSteel Company, Inc. | 54 |
2 |
| Other owners | 60 |