- 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: 1680
10-year publication summary
|
108
|
154
|
122
|
111
|
122
|
79
|
75
|
85
|
63
|
23
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 1927 |
77 |
| Höganäs AB | 302 |
74 |
| TDK Corporation | 6807 |
65 |
| JFE Steel Corporation | 7300 |
61 |
| True Velocity IP Holdings, Inc. | 248 |
55 |
| ArcelorMittal | 2517 |
33 |
| NTN Corporation | 4942 |
28 |
| Proterial, Ltd. | 919 |
26 |
| SANYO Special Steel Co., Ltd. | 240 |
24 |
| Nitto Denko Corporation | 8448 |
22 |
| Shin-Etsu Chemical Co., Ltd. | 5911 |
21 |
| Sumitomo Electric Industries, Ltd. | 16050 |
20 |
| Sumitomo Electric Sintered Alloy, Ltd. | 239 |
20 |
| Resonac Corporation | 3159 |
20 |
| JX Nippon Mining & Metals Corporation | 1470 |
19 |
| Uddeholms Aktiebolag | 195 |
19 |
| Murata Manufacturing Co., Ltd. | 25455 |
14 |
| Toyota Motor Corporation | 34313 |
13 |
| Intermetallics Co., Ltd. | 33 |
13 |
| Magotteaux International S.A. | 121 |
13 |
| Other owners | 1043 |