- All sections
- C - Chemistry; metallurgy
- C08F - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings
Patent holdings for IPC class C08F 232/08
Total number of patents in this class: 283
10-year publication summary
|
28
|
25
|
14
|
22
|
17
|
18
|
30
|
20
|
15
|
14
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Promerus, LLC | 172 |
30 |
| Sumitomo Bakelite Co., Ltd. | 1416 |
21 |
| Zeon Corporation | 3854 |
19 |
| ExxonMobil Chemical Patents Inc. | 4286 |
14 |
| Mitsui Chemicals, Inc. | 3134 |
14 |
| Polyplastics Co., Ltd. | 563 |
10 |
| Kolon Industries, Inc. | 1506 |
9 |
| LG Chem, Ltd. | 17205 |
8 |
| FUJIFILM Corporation | 27102 |
8 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
8 |
| Maruzen Petrochemical Co., Ltd. | 171 |
8 |
| Sumitomo Chemical Company, Limited | 8808 |
6 |
| JSR Corporation | 2476 |
6 |
| DONGWOO FINE-CHEM Co., Ltd. | 1163 |
4 |
| Tokyo Ohka Kogyo Co., Ltd. | 1481 |
4 |
| Rain Carbon Germany GmbH | 41 |
4 |
| Massachusetts Institute of Technology | 9795 |
3 |
| California Institute of Technology | 3884 |
3 |
| Idemitsu Kosan Co., Ltd. | 3995 |
3 |
| Nissan Chemical Industries, Ltd. | 1822 |
3 |
| Other owners | 98 |