- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 211/63 - Quaternary ammonium compounds having quaternised nitrogen atoms bound to acyclic carbon atoms
Patent holdings for IPC class C07C 211/63
Total number of patents in this class: 544
10-year publication summary
|
29
|
44
|
34
|
43
|
43
|
38
|
33
|
32
|
30
|
30
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokuyama Corporation | 1434 |
21 |
| The Procter & Gamble Company | 22021 |
11 |
| Shin-Etsu Chemical Co., Ltd. | 5814 |
11 |
| Tokyo Ohka Kogyo Co., Ltd. | 1549 |
9 |
| BASF SE | 21101 |
8 |
| Nitto Kasei Co., Ltd. | 108 |
8 |
| Nectar Health Sciences Inc. | 11 |
8 |
| National Institute of Advanced Industrial Science and Technology | 3798 |
7 |
| Temple University of the Commonwealth System of Higher Education | 626 |
6 |
| The Regents of the University of California | 20296 |
5 |
| Merck Patent GmbH | 5733 |
5 |
| FUJIFILM Corporation | 29871 |
5 |
| Central Glass Company, Limited | 1271 |
5 |
| Covestro Deutschland AG | 2795 |
5 |
| Elementis Specialties, Inc. | 150 |
5 |
| Innospec Limited | 372 |
5 |
| Sachem, Inc. | 68 |
5 |
| Stella Chemifa Corporation | 119 |
5 |
| Villanova University | 39 |
5 |
| Santen | 15 |
5 |
| Other owners | 400 |