- 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: 534
10-year publication summary
|
29
|
44
|
34
|
43
|
43
|
38
|
33
|
31
|
30
|
22
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokuyama Corporation | 1399 |
21 |
| The Procter & Gamble Company | 22031 |
11 |
| Shin-Etsu Chemical Co., Ltd. | 5676 |
10 |
| Tokyo Ohka Kogyo Co., Ltd. | 1543 |
9 |
| BASF SE | 20967 |
8 |
| Nectar Health Sciences Inc. | 11 |
8 |
| National Institute of Advanced Industrial Science and Technology | 3792 |
7 |
| Nitto Kasei Co., Ltd. | 106 |
7 |
| Temple University of the Commonwealth System of Higher Education | 624 |
6 |
| Merck Patent GmbH | 5814 |
5 |
| FUJIFILM Corporation | 29489 |
5 |
| Central Glass Company, Limited | 1270 |
5 |
| Covestro Deutschland AG | 2767 |
5 |
| Elementis Specialties, Inc. | 151 |
5 |
| Innospec Limited | 343 |
5 |
| Sachem, Inc. | 71 |
5 |
| Stella Chemifa Corporation | 119 |
5 |
| Villanova University | 35 |
5 |
| Santen | 15 |
5 |
| Halliburton Energy Services, Inc. | 20949 |
4 |
| Other owners | 393 |