- All sections
- B - Performing operationstransporting
- B01D - Separation
- B01D 71/62 - Polycondensates having nitrogen-containing heterocyclic rings in the main chain
Patent holdings for IPC class B01D 71/62
Total number of patents in this class: 223
10-year publication summary
|
23
|
20
|
14
|
17
|
13
|
11
|
19
|
11
|
16
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Uop LLC | 4236 |
13 |
| King Abdullah University of Science and Technology | 1768 |
9 |
| King Fahd University of Petroleum and Minerals | 1164 |
9 |
| Asahi Kasei Kabushiki Kaisha | 2653 |
8 |
| Toray Industries, Inc. | 6930 |
7 |
| FUJIFILM Manufacturing Europe B.V. | 269 |
7 |
| BASF SE | 20892 |
6 |
| Council of Scientific & Industrial Research | 1424 |
6 |
| Saudi Arabian Oil Company | 12947 |
6 |
| FUJIFILM Corporation | 29295 |
5 |
| IUCF-HYU (Industry-University Cooperation Foundation Hanyang University) | 1367 |
5 |
| The Regents of the University of California | 19857 |
4 |
| Fresenius Medical Care Deutschland GmbH | 2149 |
4 |
| Centre National de La Recherche Scientifique | 10408 |
3 |
| Nitto Denko Corporation | 8219 |
3 |
| The Board of Trustees of the Leland Stanford Junior University | 6396 |
3 |
| Board of Regents, The University of Texas System | 5763 |
3 |
| Cornell University | 3292 |
3 |
| Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbH | 65 |
3 |
| National University of Singapore | 2436 |
3 |
| Other owners | 113 |