- All sections
- C - Chemistry; metallurgy
- C08G - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C08G 73/12 - Unsaturated polyimide precursors
Patent holdings for IPC class C08G 73/12
Total number of patents in this class: 320
10-year publication summary
|
8
|
14
|
24
|
37
|
23
|
45
|
41
|
40
|
30
|
12
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Gas Chemical Company, Inc. | 3188 |
20 |
| FUJIFILM Corporation | 27102 |
18 |
| LG Chem, Ltd. | 17205 |
16 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
12 |
| Nippon Kayaku Kabushiki Kaisha | 1400 |
12 |
| Resonac Corporation | 2233 |
11 |
| Hitachi Chemical Company, Ltd. | 2455 |
8 |
| Eternal Materials Co., Ltd. | 101 |
7 |
| Lintec Corporation | 1915 |
7 |
| Nissan Chemical Industries, Ltd. | 1822 |
7 |
| Nissan Chemical Corporation | 1725 |
7 |
| Industrial Technology Research Institute | 4898 |
6 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
6 |
| Designer Molecules, Inc. | 54 |
5 |
| Soochow University | 1605 |
5 |
| Merck Patent GmbH | 5909 |
4 |
| The United States of America as represented by the Secretary of the Navy | 2734 |
4 |
| Kaneka Corporation | 4445 |
4 |
| Sumitomo Bakelite Co., Ltd. | 1416 |
4 |
| Evonik Operations GmbH | 3879 |
4 |
| Other owners | 153 |