- All sections
- B - Performing operations; transporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J 23/30 - Tungsten
Patent holdings for IPC class B01J 23/30
Total number of patents in this class: 1146
10-year publication summary
|
68
|
89
|
96
|
91
|
101
|
78
|
67
|
59
|
43
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 12446 |
45 |
| Umicore AG & Co. KG | 860 |
36 |
| Toshiba Materials Co., Ltd. | 631 |
23 |
| Uop LLC | 4188 |
22 |
| Asahi Kasei Kabushiki Kaisha | 2556 |
22 |
| Johnson Matthey Public Limited Company | 1852 |
21 |
| Asahi Kasei Chemicals Corporation | 713 |
20 |
| Shell USA, Inc. | 1137 |
17 |
| IFP Energies Nouvelles | 2829 |
16 |
| Nitto Denko Corporation | 8089 |
15 |
| Mitsubishi Heavy Industries, Ltd. | 8538 |
14 |
| SABIC Global Technologies B.V. | 4203 |
14 |
| Aramco Services Company | 3750 |
13 |
| Mitsubishi Power, Ltd. | 1737 |
13 |
| Chevron U.S.A. Inc. | 3856 |
12 |
| Showa Denko K.K. | 2337 |
12 |
| BASF Mobile Emissions Catalysts LLC | 257 |
11 |
| Archer Daniels Midland Company | 1136 |
10 |
| Avantium Knowledge Centre B.V. | 176 |
10 |
| BASF SE | 20432 |
9 |
| Other owners | 791 |