- 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: 8325
10-year publication summary
|
651
|
716
|
729
|
757
|
733
|
665
|
634
|
586
|
554
|
365
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bridgestone Corporation | 7262 |
390 |
| Sumitomo Rubber Industries, Ltd. | 4727 |
309 |
| The Yokohama Rubber Co., Ltd. | 4116 |
280 |
| LG Chem, Ltd. | 17929 |
277 |
| Shin-Etsu Chemical Co., Ltd. | 6109 |
187 |
| Compagnie Generale des Etablissements Michelin | 4971 |
154 |
| Compagnie générale des établissements Michelin SCA | 2718 |
139 |
| 3m Innovative Properties Company | 17481 |
135 |
| The Goodyear Tire & Rubber Company | 2394 |
104 |
| Bridgestone Americas Tire Operations, LLC | 1127 |
96 |
| Zeon Corporation | 4151 |
96 |
| Dow Silicones Corporation | 2118 |
85 |
| Kuraray Co., Ltd. | 3591 |
75 |
| Dow Global Technologies LLC | 10960 |
72 |
| Henkel AG & Co. KGaA | 10762 |
69 |
| Panasonic Intellectual Property Management Co., Ltd. | 34035 |
68 |
| Continental Reifen Deutschland GmbH | 2540 |
68 |
| Rhodia Operations | 1491 |
60 |
| Mitsubishi Gas Chemical Company, Inc. | 3624 |
59 |
| Michelin Recherche et Technique S.A. | 2083 |
58 |
| Other owners | 5544 |