- 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: 172
10-year publication summary
9
|
5
|
6
|
15
|
9
|
8
|
15
|
11
|
9
|
2
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
NOK Corporation | 2108 |
13 |
Asahi Glass Company, Limited | 2985 |
9 |
Dow Global Technologies LLC | 10147 |
7 |
Kao Corporation | 4843 |
5 |
Ethox Chemicals, LLC | 95 |
5 |
Daicel Corporation | 2128 |
4 |
Nippon Shokubai Co., Ltd. | 1487 |
4 |
Zhejiang Huangma Technology Co., Ltd | 26 |
4 |
China Petroleum & Chemical Corporation | 1623 |
3 |
SANYO Chemical Industries, Ltd. | 472 |
3 |
Shanghai Research Institute of Petrochemical Technology Sinopec | 252 |
3 |
Takemoto Yushi Kabushiki Kaisha | 166 |
3 |
The University of British Columbia | 1432 |
3 |
Wanhua Chemical Group Co., Ltd. | 286 |
3 |
Jiahua Science & Technology Development (Shanghai) Ltd. | 21 |
3 |
Zhejiang Huangma New Materials Technology Co.,Ltd | 8 |
3 |
Bayer MaterialScience LLC | 178 |
2 |
Showa Denko K.K. | 2539 |
2 |
Adeka Corporation | 1333 |
2 |
Dai-Ichi Kogyo Seiyaku Co., Ltd. | 235 |
2 |
Other owners | 89 |