- All sections
- C - Chemistry; metallurgy
- C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K 3/36 - Silica
Patent holdings for IPC class C08K 3/36
Total number of patents in this class: 7117
10-year publication summary
|
506
|
566
|
651
|
714
|
727
|
746
|
705
|
639
|
601
|
160
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bridgestone Corporation | 7067 |
342 |
| Sumitomo Rubber Industries, Ltd. | 4421 |
293 |
| LG Chem, Ltd. | 17205 |
282 |
| The Yokohama Rubber Co., Ltd. | 3929 |
245 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
143 |
| Compagnie Generale des Etablissements Michelin | 4450 |
128 |
| 3m Innovative Properties Company | 18406 |
127 |
| Compagnie générale des établissements Michelin SCA | 2477 |
117 |
| The Goodyear Tire & Rubber Company | 2569 |
88 |
| Zeon Corporation | 3854 |
84 |
| Bridgestone Americas Tire Operations, LLC | 990 |
78 |
| Dow Global Technologies LLC | 10147 |
70 |
| Kuraray Co., Ltd. | 3392 |
68 |
| Michelin Recherche et Technique S.A. | 2328 |
61 |
| Dow Silicones Corporation | 1664 |
59 |
| JSR Corporation | 2476 |
56 |
| Mitsubishi Gas Chemical Company, Inc. | 3188 |
56 |
| Sumitomo Chemical Company, Limited | 8808 |
53 |
| Rhodia Operations | 1645 |
48 |
| Continental Reifen Deutschland GmbH | 2324 |
47 |
| Other owners | 4672 |