- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 30/00 - Alloys containing less than 50% by weight of each constituent
Patent holdings for IPC class C22C 30/00
Total number of patents in this class: 1138
10-year publication summary
|
119
|
103
|
104
|
112
|
84
|
74
|
94
|
88
|
85
|
41
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 1993 |
40 |
| Nippon Steel Corporation | 6097 |
30 |
| Kubota Corporation | 3647 |
20 |
| Proterial, Ltd. | 804 |
19 |
| SANYO Special Steel Co., Ltd. | 219 |
18 |
| Tanaka Kikinzoku Kogyo K.K. | 588 |
18 |
| Hitachi, Ltd. | 15334 |
17 |
| Aperam | 115 |
15 |
| TDK Corporation | 6626 |
14 |
| POSCO Co., Ltd. | 1363 |
12 |
| General Electric Company | 17076 |
11 |
| Panasonic Intellectual Property Management Co., Ltd. | 30506 |
11 |
| POSTECH Academy-industry Foundation | 1096 |
11 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
10 |
| JX Nippon Mining & Metals Corporation | 1502 |
9 |
| Vacuumschmelze GmbH & Co. KG | 263 |
9 |
| GE Infrastructure Technology, LLC | 6163 |
9 |
| ExxonMobil Chemical Patents Inc. | 4050 |
8 |
| City University of Hong Kong | 810 |
8 |
| Daido Steel Co., Ltd. | 261 |
8 |
| Other owners | 841 |