- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 213/20 - Quaternary compounds thereof
Patent holdings for IPC class C07D 213/20
Total number of patents in this class: 119
10-year publication summary
|
10
|
9
|
9
|
8
|
5
|
6
|
7
|
7
|
5
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bromine Compounds Ltd. | 196 |
7 |
| Universite Grenoble Alpes | 648 |
4 |
| Mesosil Inc. | 6 |
4 |
| Vertex Pharmaceuticals Incorporated | 1581 |
3 |
| The Hong Kong University of Science and Technology | 638 |
3 |
| E. I. du Pont de Nemours and Company | 4345 |
2 |
| Merck Patent GmbH | 5909 |
2 |
| FUJIFILM Corporation | 27102 |
2 |
| BASF AG | 1258 |
2 |
| Sabic Innovative Plastics IP B.V. | 683 |
2 |
| Chevron U.S.A. Inc. | 3774 |
2 |
| Aramco Services Company | 3504 |
2 |
| Covestro Deutschland AG | 2429 |
2 |
| INVISTA Technologies S.a.r.l. | 450 |
2 |
| The Lubrizol Corporation | 1335 |
2 |
| Saudi Arabian Oil Company | 11322 |
2 |
| Trioptotec GmbH | 18 |
2 |
| University of Massachusetts | 2130 |
2 |
| Centre National de La Recherche Scientifique (cnrs) | 3191 |
2 |
| Covestro Intellectual Property GmbH & Co. KG | 501 |
2 |
| Other owners | 68 |