- 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: 1278
10-year publication summary
|
103
|
104
|
113
|
84
|
76
|
98
|
88
|
89
|
107
|
61
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6945 |
50 |
| Hitachi Metals, Ltd. | 1824 |
39 |
| Proterial, Ltd. | 941 |
29 |
| Kubota Corporation | 4414 |
21 |
| SANYO Special Steel Co., Ltd. | 249 |
21 |
| Tanaka Kikinzoku Kogyo K.K. | 574 |
18 |
| Hitachi, Ltd. | 16183 |
17 |
| Aperam | 143 |
15 |
| TDK Corporation | 6927 |
14 |
| JFE Steel Corporation | 7599 |
14 |
| General Electric Company | 13938 |
13 |
| POSCO Co., Ltd. | 2025 |
12 |
| Vacuumschmelze GmbH & Co. KG | 257 |
12 |
| Siemens Energy Global GmbH & Co. KG | 3447 |
12 |
| Panasonic Intellectual Property Management Co., Ltd. | 34335 |
11 |
| POSTECH Academy-industry Foundation | 1065 |
11 |
| Mirus LLC | 252 |
10 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
10 |
| Siemens Energy, Inc. | 1683 |
9 |
| Daido Steel Co., Ltd. | 286 |
9 |
| Other owners | 931 |