- All sections
- C - Chemistrymetallurgy
- C08C - Treatment or chemical modification of rubbers
- C08C 4/00 - Treatment of rubber before vulcanisation, not provided for in groups
Patent holdings for IPC class C08C 4/00
Total number of patents in this class: 56
10-year publication summary
|
3
|
11
|
2
|
4
|
5
|
3
|
2
|
4
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bridgestone Corporation | 7242 |
10 |
| Sumitomo Rubber Industries, Ltd. | 4712 |
4 |
| Zeon Corporation | 4126 |
4 |
| Association pour les Transferts de Technologies du Mans | 9 |
2 |
| Bridgestone Americas Tire Operations, LLC | 1099 |
2 |
| Zoz GmbH | 9 |
2 |
| Chambroad Chemical Industry Research Institute Co., Ltd. | 5 |
2 |
| Qingdao University of Science and Technology | 109 |
2 |
| Shandong Huaju Polymer Materials Co., Ltd. | 2 |
2 |
| Ship 2 Shore Inc. | 3 |
2 |
| The Goodyear Tire & Rubber Company | 2379 |
1 |
| Mitsui Chemicals, Inc. | 3226 |
1 |
| JSR Corporation | 2559 |
1 |
| Beijing University of Chemical Technology | 325 |
1 |
| Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement (cirad) | 51 |
1 |
| Coperion GmbH | 163 |
1 |
| Denka Company Limited | 2685 |
1 |
| Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung eingetragener Verein | 86 |
1 |
| Lion Specialty Chemicals Co., Ltd. | 47 |
1 |
| Lotte Chemical Corporation | 742 |
1 |
| Other owners | 14 |