- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 53/81 - Solid phase processes
Patent holdings for IPC class B01D 53/81
Total number of patents in this class: 348
10-year publication summary
20
|
25
|
34
|
27
|
25
|
22
|
26
|
29
|
38
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Taiheiyo Cement Corporation | 237 |
9 |
The University of Tokyo | 3903 |
9 |
J-POWER EnTech, Inc. | 17 |
8 |
King Abdullah University of Science and Technology | 1703 |
8 |
Sintokogio, Ltd. | 1148 |
7 |
Toyobo Co., Ltd. | 2286 |
7 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
6 |
Saudi Arabian Oil Company | 11322 |
6 |
TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
6 |
Environment Sustainable System Engineering Technology Co., Ltd. | 23 |
6 |
Calgon Carbon Corporation | 224 |
5 |
Kurita Water Industries Ltd. | 1110 |
5 |
Yanmar Co., Ltd. | 1479 |
5 |
Global Thermostat Operations LLC | 49 |
5 |
The Regents of the University of California | 18943 |
4 |
Hitachi, Ltd. | 16452 |
4 |
W. L. Gore & Associates, Inc. | 2600 |
4 |
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
4 |
Mitsubishi Heavy Industries Environmental & Chemical Engineering Co., Ltd. | 122 |
4 |
Mitsubishi Hitachi Power Systems, Ltd. | 999 |
4 |
Other owners | 232 |