- All sections
- C - Chemistry; metallurgy
- C08F - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08F 257/02 - Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group on to polymers of styrene or alkyl-substituted styrenes
Patent holdings for IPC class C08F 257/02
Total number of patents in this class: 307
10-year publication summary
|
21
|
17
|
30
|
29
|
22
|
31
|
26
|
20
|
20
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 19740 |
27 |
| LG Chem, Ltd. | 17205 |
13 |
| JSR Corporation | 2476 |
10 |
| PPG Industries Ohio, Inc. | 3430 |
8 |
| Nippon Shokubai Co., Ltd. | 1487 |
6 |
| Centre National de La Recherche Scientifique | 9632 |
5 |
| Dow Global Technologies LLC | 10147 |
5 |
| GreenMantra Recycling Technologies Ltd. | 63 |
5 |
| INEOS Styrolution Group GmbH | 325 |
5 |
| Kemira Oyj | 1167 |
5 |
| F. Hoffmann-La Roche AG | 7958 |
3 |
| The Regents of the University of California | 18943 |
3 |
| E. I. du Pont de Nemours and Company | 4345 |
3 |
| Hewlett-Packard Development Company, L.P. | 28538 |
3 |
| FUJIFILM Corporation | 27102 |
3 |
| Bridgestone Corporation | 7067 |
3 |
| Mitsubishi Chemical Corporation | 4313 |
3 |
| Kaneka Corporation | 4445 |
3 |
| Denka Company Limited | 2189 |
3 |
| ISP Investments Inc. | 485 |
3 |
| Other owners | 188 |