- All sections
- B - Performing operations; transporting
- 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: 1043
10-year publication summary
|
108
|
86
|
102
|
106
|
97
|
106
|
95
|
82
|
84
|
18
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toray Industries, Inc. | 6652 |
134 |
| Dow Global Technologies LLC | 10147 |
65 |
| Nitto Denko Corporation | 7879 |
62 |
| LG Chem, Ltd. | 17205 |
59 |
| FUJIFILM Corporation | 27102 |
27 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
25 |
| Kurita Water Industries Ltd. | 1110 |
19 |
| Aquaporin A/S | 69 |
19 |
| 3m Innovative Properties Company | 18406 |
15 |
| Solventum Intellectual Properties Company | 2681 |
15 |
| Toray Advanced Materials Korea Inc. | 222 |
14 |
| Entegris, Inc. | 1736 |
14 |
| Saudi Arabian Oil Company | 11322 |
13 |
| Unitika Ltd. | 441 |
12 |
| National University of Singapore | 2228 |
11 |
| Organo Corporation | 394 |
10 |
| BL Technologies, Inc. | 831 |
9 |
| National University Corporation Kobe University | 460 |
9 |
| FUJIFILM Manufacturing Europe B.V. | 271 |
8 |
| BASF SE | 19740 |
7 |
| Other owners | 496 |