- All sections
- C - Chemistry; metallurgy
- C08G - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C08G 65/28 - Cyclic ethers and hydroxy compounds
Patent holdings for IPC class C08G 65/28
Total number of patents in this class: 182
10-year publication summary
|
5
|
6
|
15
|
9
|
8
|
15
|
11
|
10
|
11
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2162 |
13 |
| Asahi Glass Company, Limited | 2885 |
9 |
| Dow Global Technologies LLC | 10143 |
7 |
| Kao Corporation | 4903 |
5 |
| Ethox Chemicals, LLC | 95 |
5 |
| China Petroleum & Chemical Corporation | 1774 |
4 |
| Daicel Corporation | 2239 |
4 |
| Nippon Shokubai Co., Ltd. | 1511 |
4 |
| Zhejiang Huangma Technology Co., Ltd | 30 |
4 |
| SANYO Chemical Industries, Ltd. | 474 |
3 |
| Shanghai Research Institute of Petrochemical Technology Sinopec | 265 |
3 |
| South China University of Technology | 1699 |
3 |
| Takemoto Yushi Kabushiki Kaisha | 172 |
3 |
| The University of British Columbia | 1465 |
3 |
| Wanhua Chemical Group Co., Ltd. | 302 |
3 |
| Jiahua Science & Technology Development (Shanghai) Ltd. | 21 |
3 |
| Zhejiang Huangma New Materials Technology Co.,Ltd | 8 |
3 |
| Showa Denko K.K. | 2341 |
2 |
| Adeka Corporation | 1340 |
2 |
| Dai-Ichi Kogyo Seiyaku Co., Ltd. | 229 |
2 |
| Other owners | 97 |