- 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: 596
10-year publication summary
|
44
|
49
|
55
|
49
|
46
|
42
|
39
|
59
|
38
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1244 |
63 |
| Organo Corporation | 521 |
25 |
| Toray Industries, Inc. | 7016 |
15 |
| Mitsubishi Heavy Industries, Ltd. | 8948 |
14 |
| Ecolab USA Inc. | 5648 |
11 |
| General Electric Company | 13798 |
8 |
| Veolia Water Solutions & Technologies Support | 532 |
8 |
| DDP Specialty Electronic Materials US, LLC | 845 |
8 |
| Hitachi, Ltd. | 15784 |
7 |
| DSM IP Assets B.V. | 5478 |
7 |
| Dow Global Technologies LLC | 10681 |
7 |
| UNGER Marketing International, LLC | 340 |
7 |
| Glycom A/S | 249 |
7 |
| Schlumberger Technology Corporation | 11217 |
6 |
| Murtech, Inc. | 26 |
6 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6224 |
6 |
| BL Technologies, Inc. | 839 |
5 |
| IDE Water Technologies Ltd. | 54 |
5 |
| Natural Ocean Well Co. | 26 |
5 |
| Chevron U.S.A. Inc. | 4043 |
4 |
| Other owners | 372 |