- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 21/06 - Refining
Patent holdings for IPC class C22B 21/06
Total number of patents in this class: 264
10-year publication summary
|
21
|
24
|
19
|
7
|
17
|
24
|
12
|
13
|
15
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Molten Metal Equipment Innovations, LLC | 96 |
28 |
| Pyrotek, Inc. | 193 |
21 |
| Mitsui Mining & Smelting Co., Ltd. | 1373 |
12 |
| Constellium Issoire | 208 |
10 |
| Kabushiki Kaisha Toyota Chuo Kenkyusho | 587 |
10 |
| Norsk Hydro ASA | 288 |
9 |
| Southwire Company, LLC | 711 |
9 |
| Toyota Tsusho Corporation | 163 |
9 |
| The Boeing Company | 19843 |
7 |
| Nippon Light Metal Company, Ltd. | 645 |
7 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
5 |
| Foseco International Limited | 204 |
4 |
| Exentis Knowledge GmbH | 46 |
4 |
| Toyota Motor Corporation | 28582 |
3 |
| Showa Denko K.K. | 2539 |
3 |
| ALCAN International Limited | 40 |
3 |
| Alcoa Inc. | 323 |
3 |
| Alcoa USA Corp. | 187 |
3 |
| Aleris Switzerland GmbH | 4 |
3 |
| Altek, L.L.C. | 16 |
3 |
| Other owners | 108 |