- All sections
- B - Performing operations; transporting
- B01D - Separation
- B01D 71/68 - Polysulfones; Polyethersulfones
Patent holdings for IPC class B01D 71/68
Total number of patents in this class: 1131
10-year publication summary
|
115
|
84
|
108
|
93
|
120
|
101
|
104
|
102
|
94
|
35
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Gambro Lundia AB | 1383 |
70 |
| Toray Industries, Inc. | 6652 |
54 |
| BASF SE | 19740 |
53 |
| Asahi Kasei Medical Co., Ltd. | 308 |
34 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
31 |
| FUJIFILM Corporation | 27102 |
29 |
| Toyobo Co., Ltd. | 2286 |
27 |
| Uop LLC | 4083 |
25 |
| Fresenius Medical Care Deutschland GmbH | 2100 |
18 |
| EMD Millipore Corporation | 657 |
16 |
| Entegris, Inc. | 1736 |
16 |
| Solvay Specialty Polymers USA, LLC | 521 |
16 |
| Nitto Denko Corporation | 7879 |
15 |
| National University of Singapore | 2228 |
15 |
| 3m Innovative Properties Company | 18406 |
14 |
| Toyo Boseki Kabushiki Kaisha | 472 |
14 |
| Solventum Intellectual Properties Company | 2681 |
14 |
| LG Chem, Ltd. | 17205 |
13 |
| Sumitomo Chemical Company, Limited | 8808 |
13 |
| Sartorius Stedim Biotech GmbH | 774 |
13 |
| Other owners | 631 |