- All sections
- B - Performing operationstransporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistrytheir relevant apparatus
- B01J 23/648 - Vanadium, niobium or tantalum
Patent holdings for IPC class B01J 23/648
Total number of patents in this class: 257
10-year publication summary
|
22
|
18
|
23
|
11
|
12
|
17
|
12
|
12
|
9
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Johnson Matthey Public Limited Company | 1868 |
15 |
| Topsoe A/S | 911 |
10 |
| Johnson Matthey Hydrogen Technologies Limited | 117 |
9 |
| Celanese International Corporation | 911 |
8 |
| Umicore AG & Co. KG | 857 |
8 |
| Cataler Corporation | 578 |
7 |
| Mitsui Mining & Smelting Co., Ltd. | 1502 |
7 |
| Rohm and Haas Company | 2900 |
6 |
| Haldor Topsøe A/S | 658 |
6 |
| Osaka Gas Co., Ltd. | 312 |
5 |
| Toyota Motor Corporation | 32869 |
4 |
| Dow Global Technologies LLC | 10413 |
4 |
| N.E. Chemcat Corporation | 188 |
4 |
| Osaka University | 3388 |
4 |
| University of Yamanashi | 266 |
4 |
| BASF SE | 20991 |
3 |
| BASF Corporation | 1719 |
3 |
| Purdue Research Foundation | 3670 |
3 |
| Council of Scientific & Industrial Research | 1439 |
3 |
| Novamont S.p.A. | 355 |
3 |
| Other owners | 141 |