- 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: 232
10-year publication summary
|
19
|
13
|
14
|
11
|
10
|
18
|
11
|
16
|
16
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Uop LLC | 4309 |
13 |
| King Fahd University of Petroleum and Minerals | 1483 |
11 |
| King Abdullah University of Science and Technology | 1835 |
9 |
| Asahi Kasei Kabushiki Kaisha | 2779 |
8 |
| Toray Industries, Inc. | 7038 |
7 |
| FUJIFILM Manufacturing Europe B.V. | 251 |
7 |
| Saudi Arabian Oil Company | 13949 |
7 |
| BASF SE | 21113 |
6 |
| Council of Scientific & Industrial Research | 1431 |
6 |
| FUJIFILM Corporation | 30244 |
5 |
| IUCF-HYU (Industry-University Cooperation Foundation Hanyang University) | 1535 |
5 |
| The Regents of the University of California | 20534 |
4 |
| Fresenius Medical Care Deutschland GmbH | 2213 |
4 |
| Centre National de La Recherche Scientifique | 10865 |
3 |
| Nitto Denko Corporation | 8465 |
3 |
| The Board of Trustees of the Leland Stanford Junior University | 6594 |
3 |
| Board of Regents, The University of Texas System | 6031 |
3 |
| Aramco Services Company | 4162 |
3 |
| Cornell University | 3384 |
3 |
| Helmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbH | 59 |
3 |
| Other owners | 119 |