- 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: 325
10-year publication summary
|
23
|
23
|
25
|
35
|
33
|
20
|
18
|
12
|
10
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 30512 |
33 |
| JSR Corporation | 2555 |
25 |
| Nippon Shokubai Co., Ltd. | 1537 |
13 |
| Idemitsu Kosan Co., Ltd. | 4234 |
8 |
| Central Glass Company, Limited | 1291 |
8 |
| Mitsubishi Gas Chemical Company, Inc. | 3619 |
7 |
| Sumitomo Chemical Company, Limited | 8996 |
6 |
| Jicc-02 Co., Ltd. | 275 |
6 |
| LG Chem, Ltd. | 17921 |
5 |
| Kuraray Co., Ltd. | 3589 |
5 |
| Nissan Chemical Corporation | 2218 |
5 |
| Samsung Electronics Co., Ltd. | 157557 |
4 |
| BASF SE | 21303 |
4 |
| Shin-Etsu Chemical Co., Ltd. | 6083 |
4 |
| Sumitomo Rubber Industries, Ltd. | 4723 |
4 |
| Henkel AG & Co. KGaA | 10770 |
4 |
| Iowa State University Research Foundation, Inc. | 825 |
4 |
| Kyoeisha Chemical Co., Ltd. | 85 |
4 |
| NOK Corporation | 2296 |
4 |
| Soken Chemical & Engineering Co., Ltd. | 261 |
4 |
| Other owners | 168 |