- All sections
- B - Performing operations; transporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J 21/20 - Regeneration or reactivation
Patent holdings for IPC class B01J 21/20
Total number of patents in this class: 98
10-year publication summary
|
9
|
10
|
5
|
6
|
10
|
4
|
4
|
2
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Chevron U.S.A. Inc. | 3774 |
10 |
| Uop LLC | 4083 |
6 |
| Mitsubishi Power, Ltd. | 1680 |
6 |
| Instituto Mexicano Del Petroleo | 213 |
5 |
| Shell USA, Inc. | 1074 |
4 |
| Chevron Phillips Chemical Company LP | 1779 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
2 |
| Evonik Degussa GmbH | 1574 |
2 |
| Eurecat S.A. | 85 |
2 |
| IFP Energies Nouvelles | 2717 |
2 |
| Johnson Matthey Public Limited Company | 1852 |
2 |
| Mexichem Amanco Holding S.A. de C.V. | 126 |
2 |
| Sartec Corporation | 35 |
2 |
| Saudi Arabian Oil Company | 11322 |
2 |
| Seoul Viosys Co., Ltd. | 1359 |
2 |
| Shanghai Huaming Hi-Tech (Group) Co., Ltd. | 4 |
2 |
| Utah State University | 180 |
2 |
| Velocys, Inc. | 87 |
2 |
| BASF SE | 19740 |
1 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
1 |
| Other owners | 38 |