- All sections
- C - Chemistrymetallurgy
- C08F - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08F 222/04 - Anhydrides, e.g. cyclic anhydrides
Patent holdings for IPC class C08F 222/04
Total number of patents in this class: 106
10-year publication summary
|
5
|
6
|
5
|
4
|
6
|
4
|
17
|
5
|
5
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 21080 |
11 |
| LG Chem, Ltd. | 17682 |
5 |
| California Institute of Technology | 3990 |
5 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 619 |
5 |
| MFG Chemical, LLC | 17 |
5 |
| DSM IP Assets B.V. | 5553 |
3 |
| Clariant International Ltd. | 928 |
3 |
| Japan Polyethylene Corporation | 130 |
3 |
| Promerus, LLC | 144 |
3 |
| Kzj New Materials Group Co., Ltd. | 52 |
3 |
| Covestro (Netherlands) B.V. | 280 |
3 |
| FUJIFILM Corporation | 29752 |
2 |
| Nikon Corporation | 7308 |
2 |
| Cheil Industries Inc. | 844 |
2 |
| Nitto Denko Corporation | 8352 |
2 |
| Denka Company Limited | 2646 |
2 |
| Essilor International (compagnie Generale D'optique) | 2988 |
2 |
| Henkel IP & Holding GmbH | 561 |
2 |
| Japan Polypropylene Corporation | 141 |
2 |
| Kuraray Co., Ltd. | 3531 |
2 |
| Other owners | 39 |