- 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: 1198
10-year publication summary
|
106
|
90
|
86
|
103
|
76
|
71
|
95
|
86
|
83
|
85
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 1971 |
40 |
| Nippon Steel Corporation | 6365 |
35 |
| Proterial, Ltd. | 869 |
24 |
| Kubota Corporation | 3986 |
20 |
| SANYO Special Steel Co., Ltd. | 227 |
19 |
| Tanaka Kikinzoku Kogyo K.K. | 584 |
18 |
| Hitachi, Ltd. | 15588 |
17 |
| Aperam | 126 |
15 |
| TDK Corporation | 6874 |
14 |
| General Electric Company | 13858 |
13 |
| POSCO Co., Ltd. | 1574 |
13 |
| Panasonic Intellectual Property Management Co., Ltd. | 32052 |
11 |
| JFE Steel Corporation | 6965 |
11 |
| POSTECH Academy-industry Foundation | 1089 |
11 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
10 |
| JX Nippon Mining & Metals Corporation | 1485 |
9 |
| Vacuumschmelze GmbH & Co. KG | 259 |
9 |
| VDM Metals International GmbH | 105 |
9 |
| GE Infrastructure Technology, LLC | 6250 |
9 |
| Nissan Motor Co., Ltd. | 12560 |
8 |
| Other owners | 883 |