- All sections
- C - Chemistrymetallurgy
- C08G - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C08G 59/20 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the epoxy compounds used
Patent holdings for IPC class C08G 59/20
Total number of patents in this class: 691
10-year publication summary
|
41
|
59
|
58
|
47
|
38
|
46
|
41
|
37
|
31
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Daicel Corporation | 2426 |
32 |
| Nippon Kayaku Kabushiki Kaisha | 1458 |
32 |
| Sekisui Chemical Co., Ltd. | 3528 |
31 |
| DIC Corporation | 3889 |
30 |
| Hitachi Chemical Company, Ltd. | 2301 |
24 |
| Mitsubishi Chemical Corporation | 4661 |
21 |
| Sumitomo Bakelite Co., Ltd. | 1521 |
21 |
| Toray Industries, Inc. | 7014 |
20 |
| Adeka Corporation | 1370 |
20 |
| Mitsubishi Gas Chemical Company, Inc. | 3543 |
19 |
| FUJIFILM Corporation | 30010 |
15 |
| Panasonic Intellectual Property Management Co., Ltd. | 32904 |
14 |
| Nippon Steel Chemical & Material Co., Ltd. | 682 |
14 |
| Nitto Denko Corporation | 8399 |
13 |
| Shin-Etsu Chemical Co., Ltd. | 5842 |
13 |
| Kaneka Corporation | 4629 |
13 |
| Ajinomoto Co., Inc. | 2302 |
12 |
| Namics Corporation | 463 |
12 |
| Resonac Corporation | 3083 |
12 |
| Mitsui Chemicals, Inc. | 3232 |
11 |
| Other owners | 312 |