- 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: 1144
10-year publication summary
|
86
|
102
|
105
|
98
|
106
|
95
|
83
|
87
|
94
|
46
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6945 |
139 |
| Nitto Denko Corporation | 8241 |
61 |
| LG Chem, Ltd. | 17638 |
59 |
| Dow Global Technologies LLC | 10332 |
43 |
| Asahi Kasei Kabushiki Kaisha | 2675 |
33 |
| FUJIFILM Corporation | 29399 |
27 |
| Aquaporin A/S | 74 |
22 |
| DDP Specialty Electronic Materials US, LLC | 832 |
22 |
| King Fahd University of Petroleum and Minerals | 1201 |
21 |
| Kurita Water Industries Ltd. | 1194 |
21 |
| Toray Advanced Materials Korea Inc. | 260 |
18 |
| Entegris, Inc. | 1869 |
18 |
| Solventum Intellectual Properties Company | 3323 |
17 |
| Unitika Ltd. | 451 |
15 |
| 3m Innovative Properties Company | 17819 |
14 |
| Saudi Arabian Oil Company | 13185 |
14 |
| National University Corporation Kobe University | 527 |
11 |
| National University of Singapore | 2450 |
11 |
| Vontron Technology Co., Ltd. | 35 |
11 |
| BL Technologies, Inc. | 832 |
10 |
| Other owners | 557 |