- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 61/04 - Feed pretreatment
Patent holdings for IPC class B01D 61/04
Total number of patents in this class: 573
10-year publication summary
|
47
|
44
|
51
|
56
|
49
|
47
|
43
|
43
|
61
|
23
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1190 |
60 |
| Organo Corporation | 463 |
23 |
| Toray Industries, Inc. | 6930 |
15 |
| Mitsubishi Heavy Industries, Ltd. | 8685 |
14 |
| Ecolab USA Inc. | 5465 |
10 |
| General Electric Company | 13829 |
8 |
| Veolia Water Solutions & Technologies Support | 534 |
8 |
| Hitachi, Ltd. | 15467 |
7 |
| DSM IP Assets B.V. | 5603 |
7 |
| Dow Global Technologies LLC | 10401 |
7 |
| UNGER Marketing International, LLC | 328 |
7 |
| Glycom A/S | 251 |
7 |
| DDP Specialty Electronic Materials US, LLC | 801 |
7 |
| Murtech, Inc. | 26 |
6 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6271 |
6 |
| BL Technologies, Inc. | 833 |
5 |
| IDE Water Technologies Ltd. | 42 |
5 |
| Natural Ocean Well Co. | 27 |
5 |
| Schlumberger Technology Corporation | 10662 |
4 |
| Chevron U.S.A. Inc. | 3947 |
4 |
| Other owners | 358 |