- 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: 3324
10-year publication summary
|
203
|
243
|
261
|
224
|
263
|
269
|
305
|
254
|
197
|
158
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| IFP Energies Nouvelles | 3110 |
190 |
| Johnson Matthey Public Limited Company | 1767 |
150 |
| BASF Corporation | 1679 |
101 |
| BASF SE | 21320 |
88 |
| Umicore AG & Co. KG | 850 |
77 |
| BASF Mobile Emissions Catalysts LLC | 425 |
74 |
| Saudi Arabian Oil Company | 14329 |
70 |
| China Petroleum & Chemical Corporation | 2169 |
69 |
| Uop LLC | 4397 |
63 |
| Dow Global Technologies LLC | 11008 |
45 |
| Chevron U.S.A. Inc. | 4162 |
43 |
| Toyota Motor Corporation | 35992 |
41 |
| Cataler Corporation | 575 |
40 |
| SABIC Global Technologies B.V. | 4614 |
37 |
| Shell USA, Inc. | 1341 |
32 |
| LG Chem, Ltd. | 17956 |
29 |
| Shell Internationale Research Maatschappij B.V. | 3391 |
29 |
| Korea Research Institute of Chemical Technology | 1485 |
26 |
| Heesung Catalysts Corporation | 122 |
25 |
| Scientific Design Company, Inc. | 115 |
25 |
| Other owners | 2070 |