- All sections
- C - Chemistry; metallurgy
- C08G - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C08G 63/189 - Acids containing aromatic rings containing two or more aromatic rings containing condensed aromatic rings containing a naphthalene ring
Patent holdings for IPC class C08G 63/189
Total number of patents in this class: 121
10-year publication summary
|
5
|
6
|
14
|
9
|
4
|
5
|
16
|
10
|
8
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toyobo Co., Ltd. | 2286 |
11 |
| Mitsubishi Gas Chemical Company, Inc. | 3188 |
10 |
| 3m Innovative Properties Company | 18406 |
6 |
| Toray Industries, Inc. | 6652 |
6 |
| Sumitomo Chemical Company, Limited | 8808 |
4 |
| Ester Industries Limited | 13 |
4 |
| Teijin Limited | 1216 |
4 |
| DuPont Teijin Films U.S. Limited Partnership | 143 |
3 |
| Solvay Specialty Polymers USA, LLC | 521 |
3 |
| Ticona LLC | 547 |
3 |
| E. I. du Pont de Nemours and Company | 4345 |
2 |
| Canon Inc. | 36841 |
2 |
| Industrial Technology Research Institute | 4898 |
2 |
| Kyocera Document Solutions Inc. | 5295 |
2 |
| Mitsubishi Chemical Corporation | 4313 |
2 |
| GOO Chemical Co., Ltd. | 86 |
2 |
| Grupo Petrotemex, S.A. de C.V. | 72 |
2 |
| Kolon Industries, Inc. | 1506 |
2 |
| Roquette Freres | 1002 |
2 |
| SK Chemicals Co., Ltd. | 568 |
2 |
| Other owners | 47 |