- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 61/04 - Feed pretreatment
Patent holdings for IPC class B01D 61/04
Total number of patents in this class: 506
10-year publication summary
|
32
|
47
|
44
|
51
|
56
|
49
|
46
|
41
|
40
|
16
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1110 |
57 |
| Organo Corporation | 394 |
16 |
| Toray Industries, Inc. | 6652 |
15 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
14 |
| Dow Global Technologies LLC | 10147 |
12 |
| Ecolab USA Inc. | 5190 |
10 |
| General Electric Company | 18133 |
8 |
| Hitachi, Ltd. | 16452 |
7 |
| BL Technologies, Inc. | 831 |
7 |
| UNGER Marketing International, LLC | 304 |
7 |
| Veolia Water Solutions & Technologies Support | 547 |
7 |
| Glycom A/S | 251 |
7 |
| DSM IP Assets B.V. | 5856 |
6 |
| Murtech, Inc. | 27 |
6 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
6 |
| Chevron U.S.A. Inc. | 3774 |
4 |
| Battelle Memorial Institute | 2356 |
4 |
| Doosan Heavy Industries & Construction Co., Ltd. | 604 |
4 |
| I.d.e. Technologies Ltd. | 44 |
4 |
| Kemira Oyj | 1167 |
4 |
| Other owners | 301 |