- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 211/51 - Phenylenediamines
Patent holdings for IPC class C07C 211/51
Total number of patents in this class: 101
10-year publication summary
|
9
|
4
|
8
|
4
|
3
|
7
|
8
|
2
|
10
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 21334 |
6 |
| Infineum International Limited | 454 |
4 |
| Chemtura Corporation | 121 |
3 |
| Ecolab USA Inc. | 5843 |
3 |
| Qingdao University of Science & Technology | 29 |
3 |
| Shandong Xingqiang Chemical Industry Technology Research Institute Co., Ltd | 7 |
3 |
| Zydus Lifesciences Limited | 141 |
3 |
| Samsung Electronics Co., Ltd. | 159755 |
2 |
| The United States of America as represented by the Secretary of the Navy | 2862 |
2 |
| Collaborative Medicinal Development, LLC | 10 |
2 |
| Dongjin Semichem Co., Ltd. | 517 |
2 |
| INVISTA Technologies S.a.r.l. | 387 |
2 |
| Lanxess Corporation | 290 |
2 |
| Ocean University of China | 216 |
2 |
| Seikagaku Corporation | 165 |
2 |
| Shanghai Haiyan Pharmaceutical Technology Co. Ltd | 110 |
2 |
| Shanghai Institute of Materia Medica, Chinese Academy of Sciences | 884 |
2 |
| Tohoku University | 3051 |
2 |
| Topharman Shanghai Co., Ltd. | 50 |
2 |
| Yangtze River Pharmaceutical (Group) Co., Ltd. | 147 |
2 |
| Other owners | 50 |