- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 61/58 - Multistep processes
Patent holdings for IPC class B01D 61/58
Total number of patents in this class: 1350
10-year publication summary
|
98
|
109
|
129
|
131
|
107
|
103
|
111
|
115
|
121
|
24
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1261 |
76 |
| Toray Industries, Inc. | 7045 |
75 |
| Organo Corporation | 536 |
64 |
| Mitsubishi Heavy Industries, Ltd. | 9023 |
28 |
| FUJIFILM Corporation | 30277 |
24 |
| Hitachi, Ltd. | 15904 |
20 |
| BL Technologies, Inc. | 837 |
18 |
| Toyobo Co., Ltd. | 2520 |
18 |
| Asahi Kasei Kabushiki Kaisha | 2783 |
16 |
| Nomura Micro Science Co., Ltd. | 81 |
16 |
| Nitto Denko Corporation | 8470 |
15 |
| Evoqua Water Technologies LLC | 930 |
12 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6207 |
12 |
| DSM IP Assets B.V. | 5430 |
10 |
| Gradiant Corporation | 147 |
10 |
| Porifera, Inc. | 69 |
10 |
| Toyobo MC Corporation | 518 |
10 |
| General Electric Company | 13806 |
9 |
| Schlumberger Technology Corporation | 11485 |
9 |
| NGK Insulators, Ltd. | 5206 |
9 |
| Other owners | 889 |