- All sections
- C - Chemistrymetallurgy
- C08F - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08F 20/28 - Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
Patent holdings for IPC class C08F 20/28
Total number of patents in this class: 315
10-year publication summary
|
10
|
23
|
23
|
25
|
33
|
33
|
20
|
16
|
12
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 29458 |
33 |
| JSR Corporation | 2529 |
24 |
| Nippon Shokubai Co., Ltd. | 1504 |
11 |
| Idemitsu Kosan Co., Ltd. | 4227 |
8 |
| Central Glass Company, Limited | 1264 |
7 |
| Kuraray Co., Ltd. | 3507 |
7 |
| Mitsubishi Gas Chemical Company, Inc. | 3470 |
7 |
| Tokyo Ohka Kogyo Co., Ltd. | 1543 |
7 |
| Sumitomo Chemical Company, Limited | 9047 |
6 |
| LG Chem, Ltd. | 17641 |
5 |
| Samsung Electronics Co., Ltd. | 147003 |
4 |
| BASF SE | 20945 |
4 |
| Ricoh Company, Ltd. | 13276 |
4 |
| Shin-Etsu Chemical Co., Ltd. | 5674 |
4 |
| Sumitomo Rubber Industries, Ltd. | 4657 |
4 |
| Henkel AG & Co. KGaA | 10588 |
4 |
| Iowa State University Research Foundation, Inc. | 779 |
4 |
| Kyoeisha Chemical Co., Ltd. | 82 |
4 |
| NOK Corporation | 2223 |
4 |
| Soken Chemical & Engineering Co., Ltd. | 258 |
4 |
| Other owners | 160 |