- All sections
- C - Chemistry; metallurgy
- 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: 1576
10-year publication summary
|
119
|
139
|
111
|
159
|
123
|
115
|
123
|
81
|
76
|
35
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Höganäs AB | 337 |
82 |
| Hitachi Metals, Ltd. | 2175 |
80 |
| TDK Corporation | 6306 |
64 |
| JFE Steel Corporation | 6067 |
59 |
| True Velocity IP Holdings, LLC | 255 |
55 |
| NTN Corporation | 5008 |
28 |
| Proterial, Ltd. | 638 |
26 |
| Nitto Denko Corporation | 7879 |
22 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
21 |
| SANYO Special Steel Co., Ltd. | 201 |
21 |
| Sumitomo Electric Industries, Ltd. | 14131 |
20 |
| ArcelorMittal | 1887 |
19 |
| JX Nippon Mining & Metals Corporation | 1576 |
19 |
| Sumitomo Electric Sintered Alloy, Ltd. | 214 |
19 |
| Hoeganaes Corporation | 75 |
16 |
| Uddeholms Aktiebolag | 197 |
16 |
| Resonac Corporation | 2233 |
16 |
| Toyota Motor Corporation | 28582 |
15 |
| Tenneco Inc | 274 |
15 |
| Intermetallics Co., Ltd. | 34 |
14 |
| Other owners | 949 |