- 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: 1129
10-year publication summary
|
87
|
68
|
89
|
96
|
91
|
101
|
76
|
67
|
59
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saudi Arabian Oil Company | 11322 |
45 |
| Umicore AG & Co. KG | 867 |
35 |
| Toshiba Materials Co., Ltd. | 600 |
23 |
| Johnson Matthey Public Limited Company | 1852 |
22 |
| Uop LLC | 4083 |
21 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
21 |
| BASF Corporation | 2039 |
20 |
| Asahi Kasei Chemicals Corporation | 809 |
20 |
| Shell USA, Inc. | 1074 |
17 |
| Nitto Denko Corporation | 7879 |
16 |
| IFP Energies Nouvelles | 2717 |
16 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
14 |
| SABIC Global Technologies B.V. | 4044 |
14 |
| Aramco Services Company | 3504 |
13 |
| Mitsubishi Power, Ltd. | 1680 |
13 |
| Chevron U.S.A. Inc. | 3774 |
12 |
| Showa Denko K.K. | 2539 |
12 |
| LG Chem, Ltd. | 17205 |
11 |
| Centre National de La Recherche Scientifique | 9632 |
11 |
| Archer Daniels Midland Company | 1164 |
11 |
| Other owners | 762 |