- All sections
- B - Performing operationstransporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistrytheir relevant apparatus
- B01J 23/888 - Tungsten
Patent holdings for IPC class B01J 23/888
Total number of patents in this class: 576
10-year publication summary
|
32
|
45
|
42
|
45
|
29
|
27
|
39
|
26
|
25
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| IFP Energies Nouvelles | 2915 |
40 |
| Chevron U.S.A. Inc. | 3939 |
39 |
| Uop LLC | 4216 |
28 |
| BASF SE | 20803 |
27 |
| ExxonMobil Research And Engineering Company | 2590 |
26 |
| China Petroleum & Chemical Corporation | 1874 |
22 |
| Shell Internationale Research Maatschappij B.V. | 3551 |
13 |
| Shell USA, Inc. | 1200 |
12 |
| Shell Oil Company | 2141 |
10 |
| ENI S.p.A. | 1257 |
10 |
| Research Institute of Petroleum Processing, Sinopec | 371 |
10 |
| Shin-Etsu Chemical Co., Ltd. | 5602 |
8 |
| Dow Global Technologies LLC | 10384 |
8 |
| Nippon Kayaku Kabushiki Kaisha | 1431 |
8 |
| Toshiba Corporation | 12300 |
7 |
| Mitsubishi Chemical Corporation | 4492 |
7 |
| Albemarle Europe SPRL | 28 |
7 |
| Nippon Shokubai Co., Ltd. | 1505 |
7 |
| Toshiba Materials Co., Ltd. | 660 |
7 |
| Virent, Inc. | 125 |
7 |
| Other owners | 273 |