- All sections
- C - Chemistry; metallurgy
- C08F - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08F 297/04 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
Patent holdings for IPC class C08F 297/04
Total number of patents in this class: 658
10-year publication summary
|
41
|
61
|
60
|
70
|
61
|
51
|
45
|
29
|
29
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Zeon Corporation | 3995 |
96 |
| Kuraray Co., Ltd. | 3463 |
90 |
| Asahi Kasei Kabushiki Kaisha | 2556 |
50 |
| LG Chem, Ltd. | 17639 |
24 |
| INEOS Styrolution Group GmbH | 342 |
22 |
| Kraton Polymers U.S. LLC | 201 |
18 |
| Amyris, Inc. | 379 |
16 |
| Dynasol Elastomeros, S.A. de C.V. | 43 |
15 |
| Bridgestone Corporation | 7147 |
13 |
| Asahi Kasei Chemicals Corporation | 713 |
13 |
| Denka Company Limited | 2459 |
13 |
| 3m Innovative Properties Company | 17957 |
12 |
| BASF SE | 20432 |
10 |
| Bank of America, N.A. | 238 |
10 |
| JSR Corporation | 2476 |
8 |
| The Yokohama Rubber Co., Ltd. | 3961 |
8 |
| Kraton Corporation | 51 |
8 |
| Compagnie Generale des Etablissements Michelin | 4621 |
8 |
| China Petroleum & Chemical Corporation | 1783 |
7 |
| Nippon Soda Co., Ltd. | 883 |
7 |
| Other owners | 210 |