- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 271/28 - Esters of carbamic acids having oxygen atoms of carbamate groups bound to acyclic carbon atoms with the nitrogen atom of at least one of the carbamate groups bound to a carbon atom of a six-membered aromatic ring to a carbon atom of a non-condensed six-membered aromatic ring
Patent holdings for IPC class C07C 271/28
Total number of patents in this class: 337
10-year publication summary
|
17
|
27
|
17
|
17
|
18
|
16
|
25
|
13
|
18
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corteva Agriscience LLC | 2630 |
15 |
| United Therapeutics Corporation | 336 |
11 |
| Mitsui Chemicals, Inc. | 3290 |
10 |
| Covestro Deutschland AG | 2856 |
10 |
| BASF SE | 21339 |
8 |
| Shanghai Institute of Materia Medica, Chinese Academy of Sciences | 886 |
7 |
| FUJIFILM Corporation | 30866 |
6 |
| Massachusetts Institute of Technology | 10335 |
6 |
| The General Hospital Corporation | 4912 |
6 |
| Arena Pharmaceuticals, Inc. | 339 |
6 |
| The Broad Institute, Inc. | 2002 |
6 |
| Vectus Biosystems Limited | 28 |
6 |
| Chatham Biopharma Consulting, LLC | 7 |
6 |
| Bristol-myers Squibb Company | 4756 |
5 |
| The Regents of the University of California | 20989 |
5 |
| National Institute of Advanced Industrial Science and Technology | 3793 |
5 |
| Italfarmaco SpA | 163 |
5 |
| Lanxess Deutschland GmbH | 1155 |
5 |
| Bayer MaterialScience AG | 699 |
4 |
| Bio-Pharm Solutions Co., Ltd. | 55 |
4 |
| Other owners | 201 |