- 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: 3203
10-year publication summary
|
196
|
235
|
254
|
217
|
255
|
252
|
291
|
241
|
192
|
27
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| IFP Energies Nouvelles | 3007 |
184 |
| Johnson Matthey Public Limited Company | 1735 |
140 |
| BASF Corporation | 1695 |
97 |
| BASF SE | 21149 |
89 |
| Umicore AG & Co. KG | 863 |
76 |
| BASF Mobile Emissions Catalysts LLC | 426 |
75 |
| China Petroleum & Chemical Corporation | 1995 |
64 |
| Saudi Arabian Oil Company | 13839 |
62 |
| Uop LLC | 4275 |
61 |
| Dow Global Technologies LLC | 10699 |
44 |
| Toyota Motor Corporation | 33931 |
42 |
| Cataler Corporation | 579 |
39 |
| Chevron U.S.A. Inc. | 4040 |
38 |
| SABIC Global Technologies B.V. | 4449 |
37 |
| Shell Internationale Research Maatschappij B.V. | 3507 |
31 |
| LG Chem, Ltd. | 17744 |
29 |
| Shell USA, Inc. | 1275 |
28 |
| Scientific Design Company, Inc. | 116 |
25 |
| Magema Technology, LLC | 39 |
25 |
| NGK Insulators, Ltd. | 5203 |
24 |
| Other owners | 1993 |