- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 33/02 - Making ferrous alloys by powder metallurgy
Patent holdings for IPC class C22C 33/02
Total number of patents in this class: 1704
10-year publication summary
|
111
|
160
|
126
|
116
|
129
|
86
|
81
|
96
|
70
|
50
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 1898 |
77 |
| Höganäs AB | 301 |
72 |
| TDK Corporation | 6858 |
67 |
| JFE Steel Corporation | 7527 |
61 |
| True Velocity IP Holdings, Inc. | 249 |
55 |
| ArcelorMittal | 2672 |
35 |
| NTN Corporation | 4914 |
28 |
| Proterial, Ltd. | 935 |
28 |
| SANYO Special Steel Co., Ltd. | 246 |
24 |
| Nitto Denko Corporation | 8536 |
22 |
| Uddeholms Aktiebolag | 205 |
22 |
| Sumitomo Electric Industries, Ltd. | 16331 |
20 |
| Shin-Etsu Chemical Co., Ltd. | 6096 |
20 |
| Sumitomo Electric Sintered Alloy, Ltd. | 245 |
20 |
| JX Nippon Mining & Metals Corporation | 1461 |
19 |
| Resonac Corporation | 3530 |
19 |
| Murata Manufacturing Co., Ltd. | 25744 |
14 |
| Toyota Motor Corporation | 35772 |
13 |
| Federal-Mogul Powertrain LLC | 274 |
13 |
| Intermetallics Co., Ltd. | 33 |
13 |
| Other owners | 1062 |