- 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: 616
10-year publication summary
|
44
|
51
|
56
|
49
|
47
|
44
|
45
|
62
|
40
|
28
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1292 |
64 |
| Organo Corporation | 544 |
25 |
| Toray Industries, Inc. | 7145 |
18 |
| Mitsubishi Heavy Industries, Ltd. | 9188 |
14 |
| Ecolab USA Inc. | 5826 |
11 |
| Veolia Water Solutions & Technologies Support | 532 |
8 |
| DDP Specialty Electronic Materials US, LLC | 844 |
8 |
| General Electric Company | 13966 |
7 |
| Schlumberger Technology Corporation | 11924 |
7 |
| Hitachi, Ltd. | 16194 |
7 |
| DSM IP Assets B.V. | 5386 |
7 |
| Dow Global Technologies LLC | 11029 |
7 |
| UNGER Marketing International, LLC | 345 |
7 |
| Glycom A/S | 246 |
7 |
| Murtech, Inc. | 26 |
6 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6162 |
6 |
| IDE Water Technologies Ltd. | 59 |
6 |
| BL Technologies, Inc. | 840 |
5 |
| Coway Co., Ltd. | 792 |
5 |
| Nomura Micro Science Co., Ltd. | 90 |
5 |
| Other owners | 386 |