- All sections
- C - Chemistrymetallurgy
- C08L - Compositions of macromolecular compounds
- C08L 25/04 - Homopolymers or copolymers of styrene
Patent holdings for IPC class C08L 25/04
Total number of patents in this class: 632
10-year publication summary
|
27
|
44
|
32
|
30
|
27
|
42
|
35
|
23
|
29
|
34
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17978 |
25 |
| Idemitsu Kosan Co., Ltd. | 4285 |
20 |
| Mitsubishi Engineering-Plastics Corporation | 299 |
19 |
| Toyo Styrene Co., Ltd. | 34 |
18 |
| Kaneka Corporation | 4822 |
15 |
| BASF SE | 21318 |
14 |
| Panasonic Intellectual Property Management Co., Ltd. | 34568 |
14 |
| Denka Company Limited | 2767 |
14 |
| Mitsui Chemicals, Inc. | 3283 |
11 |
| Sekisui Plastics Co., Ltd. | 322 |
11 |
| Dow Global Technologies LLC | 11051 |
10 |
| Toray Industries, Inc. | 7163 |
9 |
| Asahi Kasei Kabushiki Kaisha | 2871 |
8 |
| PolyOne Corporation | 183 |
8 |
| Cheil Industries Inc. | 804 |
7 |
| Sabic Innovative Plastics IP B.V. | 572 |
7 |
| Mitsubishi Chemical Corporation | 4757 |
7 |
| JSR Corporation | 2559 |
7 |
| The Chemours Company Fc, LLC | 1356 |
7 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 568 |
7 |
| Other owners | 394 |