- All sections
- C - Chemistrymetallurgy
- 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: 8019
10-year publication summary
|
634
|
694
|
706
|
740
|
718
|
636
|
612
|
568
|
548
|
38
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bridgestone Corporation | 7213 |
376 |
| Sumitomo Rubber Industries, Ltd. | 4707 |
307 |
| The Yokohama Rubber Co., Ltd. | 4106 |
276 |
| LG Chem, Ltd. | 17710 |
274 |
| Shin-Etsu Chemical Co., Ltd. | 5830 |
175 |
| Compagnie Generale des Etablissements Michelin | 4842 |
147 |
| 3m Innovative Properties Company | 17617 |
131 |
| Compagnie générale des établissements Michelin SCA | 2614 |
128 |
| The Goodyear Tire & Rubber Company | 2437 |
110 |
| Zeon Corporation | 4117 |
98 |
| Bridgestone Americas Tire Operations, LLC | 1092 |
91 |
| Dow Silicones Corporation | 2004 |
77 |
| Kuraray Co., Ltd. | 3554 |
73 |
| Dow Global Technologies LLC | 10655 |
71 |
| Continental Reifen Deutschland GmbH | 2471 |
64 |
| Panasonic Intellectual Property Management Co., Ltd. | 32753 |
63 |
| Henkel AG & Co. KGaA | 10661 |
61 |
| Rhodia Operations | 1551 |
59 |
| Michelin Recherche et Technique S.A. | 2137 |
58 |
| Mitsubishi Gas Chemical Company, Inc. | 3531 |
56 |
| Other owners | 5324 |