- All sections
- C - Chemistry; metallurgy
- 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: 319
10-year publication summary
|
14
|
11
|
23
|
23
|
25
|
35
|
32
|
20
|
13
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 27102 |
31 |
| JSR Corporation | 2476 |
23 |
| Idemitsu Kosan Co., Ltd. | 3995 |
13 |
| Nippon Shokubai Co., Ltd. | 1487 |
12 |
| Tokyo Ohka Kogyo Co., Ltd. | 1481 |
12 |
| Central Glass Company, Limited | 1244 |
8 |
| Kuraray Co., Ltd. | 3392 |
7 |
| Mitsubishi Gas Chemical Company, Inc. | 3188 |
7 |
| Sumitomo Chemical Company, Limited | 8808 |
6 |
| LG Chem, Ltd. | 17205 |
5 |
| Ricoh Company, Ltd. | 13266 |
4 |
| Rohm and Haas Company | 2805 |
4 |
| Dow Global Technologies LLC | 10147 |
4 |
| Henkel AG & Co. KGaA | 10129 |
4 |
| Iowa State University Research Foundation, Inc. | 685 |
4 |
| NOK Corporation | 2108 |
4 |
| Soken Chemical & Engineering Co., Ltd. | 249 |
4 |
| Nissan Chemical Corporation | 1725 |
4 |
| Samsung Electronics Co., Ltd. | 131630 |
3 |
| BASF SE | 19740 |
3 |
| Other owners | 157 |