- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 53/81 - Solid phase processes
Patent holdings for IPC class B01D 53/81
Total number of patents in this class: 429
10-year publication summary
|
23
|
30
|
25
|
25
|
20
|
23
|
27
|
39
|
39
|
49
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| King Abdullah University of Science and Technology | 1810 |
9 |
| Saudi Arabian Oil Company | 13622 |
9 |
| Taiheiyo Cement Corporation | 243 |
9 |
| The University of Tokyo | 4247 |
9 |
| Calgon Carbon Corporation | 243 |
8 |
| J-POWER EnTech, Inc. | 17 |
8 |
| Toyobo Co., Ltd. | 2468 |
8 |
| Global Thermostat Operations LLC | 58 |
8 |
| Mitsubishi Heavy Industries, Ltd. | 8871 |
7 |
| Mitsubishi Gas Chemical Company, Inc. | 3498 |
6 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12680 |
6 |
| Environment Sustainable System Engineering Technology Co., Ltd. | 23 |
6 |
| The Regents of the University of California | 20268 |
5 |
| Kurita Water Industries Ltd. | 1227 |
5 |
| Mitsubishi Heavy Industries Environmental & Chemical Engineering Co., Ltd. | 126 |
5 |
| Sintokogio, Ltd. | 1162 |
5 |
| Hitachi, Ltd. | 15679 |
4 |
| W. L. Gore & Associates, Inc. | 2721 |
4 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3984 |
4 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
4 |
| Other owners | 300 |