- 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: 1193
10-year publication summary
|
102
|
106
|
98
|
106
|
96
|
83
|
87
|
94
|
72
|
32
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 7046 |
146 |
| Nitto Denko Corporation | 8468 |
64 |
| LG Chem, Ltd. | 17846 |
55 |
| Dow Global Technologies LLC | 10812 |
42 |
| Asahi Kasei Kabushiki Kaisha | 2791 |
36 |
| FUJIFILM Corporation | 30294 |
27 |
| King Fahd University of Petroleum and Minerals | 1496 |
24 |
| Aquaporin A/S | 62 |
23 |
| DDP Specialty Electronic Materials US, LLC | 845 |
22 |
| Kurita Water Industries Ltd. | 1264 |
21 |
| Toray Advanced Materials Korea Inc. | 289 |
19 |
| Entegris, Inc. | 1985 |
19 |
| Unitika Ltd. | 442 |
17 |
| Solventum Intellectual Properties Company | 3369 |
17 |
| Saudi Arabian Oil Company | 13948 |
16 |
| 3m Innovative Properties Company | 17507 |
15 |
| National University Corporation Kobe University | 560 |
12 |
| Vontron Technology Co., Ltd. | 40 |
12 |
| National University of Singapore | 2557 |
11 |
| BL Technologies, Inc. | 837 |
10 |
| Other owners | 585 |