- All sections
- B - Performing operationstransporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistrytheir relevant apparatus
- B01J 21/04 - Alumina
Patent holdings for IPC class B01J 21/04
Total number of patents in this class: 3254
10-year publication summary
|
203
|
243
|
261
|
224
|
263
|
268
|
303
|
254
|
195
|
82
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| IFP Energies Nouvelles | 3035 |
185 |
| Johnson Matthey Public Limited Company | 1754 |
146 |
| BASF Corporation | 1684 |
98 |
| BASF SE | 21150 |
89 |
| Umicore AG & Co. KG | 855 |
76 |
| BASF Mobile Emissions Catalysts LLC | 430 |
73 |
| China Petroleum & Chemical Corporation | 2064 |
65 |
| Saudi Arabian Oil Company | 13948 |
65 |
| Uop LLC | 4318 |
61 |
| Dow Global Technologies LLC | 10812 |
45 |
| Toyota Motor Corporation | 34794 |
42 |
| Chevron U.S.A. Inc. | 4094 |
42 |
| Cataler Corporation | 578 |
40 |
| SABIC Global Technologies B.V. | 4491 |
37 |
| Shell Internationale Research Maatschappij B.V. | 3456 |
30 |
| LG Chem, Ltd. | 17846 |
29 |
| Shell USA, Inc. | 1288 |
28 |
| Heesung Catalysts Corporation | 114 |
25 |
| Scientific Design Company, Inc. | 116 |
25 |
| Magema Technology, LLC | 39 |
25 |
| Other owners | 2028 |