- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 61/58 - Multistep processes
Patent holdings for IPC class B01D 61/58
Total number of patents in this class: 1135
10-year publication summary
|
65
|
75
|
98
|
109
|
128
|
131
|
106
|
102
|
102
|
42
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6652 |
70 |
| Kurita Water Industries Ltd. | 1110 |
65 |
| Organo Corporation | 394 |
49 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
24 |
| FUJIFILM Corporation | 27102 |
23 |
| Hitachi, Ltd. | 16452 |
20 |
| BL Technologies, Inc. | 831 |
18 |
| Toyobo Co., Ltd. | 2286 |
18 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
15 |
| Nomura Micro Science Co., Ltd. | 67 |
15 |
| Nitto Denko Corporation | 7879 |
11 |
| Porifera, Inc. | 67 |
11 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
11 |
| Evoqua Water Technologies LLC | 904 |
10 |
| General Electric Company | 18133 |
9 |
| Glycom A/S | 251 |
9 |
| BP Exploration Operating Company Limited | 270 |
8 |
| Enviro Water Minerals Company, Inc. | 24 |
8 |
| Gradiant Corporation | 123 |
8 |
| Veolia Water Solutions & Technologies Support | 547 |
8 |
| Other owners | 725 |