- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/56 - Polyamides, e.g. polyester-amides
Patent holdings for IPC class B01D 71/56
Total number of patents in this class: 1163
10-year publication summary
|
99
|
100
|
94
|
103
|
91
|
83
|
84
|
93
|
70
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7016 |
144 |
| Nitto Denko Corporation | 8358 |
62 |
| LG Chem, Ltd. | 17704 |
55 |
| Dow Global Technologies LLC | 10587 |
43 |
| Asahi Kasei Kabushiki Kaisha | 2716 |
35 |
| FUJIFILM Corporation | 29871 |
27 |
| Aquaporin A/S | 74 |
22 |
| DDP Specialty Electronic Materials US, LLC | 843 |
22 |
| King Fahd University of Petroleum and Minerals | 1387 |
21 |
| Kurita Water Industries Ltd. | 1235 |
21 |
| Toray Advanced Materials Korea Inc. | 272 |
19 |
| Entegris, Inc. | 1922 |
18 |
| Solventum Intellectual Properties Company | 3341 |
17 |
| Unitika Ltd. | 445 |
15 |
| 3m Innovative Properties Company | 17653 |
14 |
| Saudi Arabian Oil Company | 13681 |
14 |
| National University Corporation Kobe University | 538 |
11 |
| National University of Singapore | 2517 |
11 |
| Vontron Technology Co., Ltd. | 35 |
11 |
| BL Technologies, Inc. | 837 |
10 |
| Other owners | 571 |