- 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: 7721
10-year publication summary
|
566
|
651
|
716
|
729
|
755
|
731
|
654
|
621
|
567
|
274
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bridgestone Corporation | 7217 |
369 |
| Sumitomo Rubber Industries, Ltd. | 4483 |
301 |
| The Yokohama Rubber Co., Ltd. | 4013 |
273 |
| LG Chem, Ltd. | 17561 |
270 |
| Shin-Etsu Chemical Co., Ltd. | 5598 |
161 |
| Compagnie Generale des Etablissements Michelin | 4691 |
139 |
| 3m Innovative Properties Company | 17849 |
128 |
| Compagnie générale des établissements Michelin SCA | 2568 |
125 |
| The Goodyear Tire & Rubber Company | 2570 |
103 |
| Zeon Corporation | 4072 |
91 |
| Bridgestone Americas Tire Operations, LLC | 1061 |
87 |
| Kuraray Co., Ltd. | 3490 |
72 |
| Dow Silicones Corporation | 1889 |
71 |
| Dow Global Technologies LLC | 10354 |
68 |
| Continental Reifen Deutschland GmbH | 2438 |
61 |
| Michelin Recherche et Technique S.A. | 2198 |
61 |
| Mitsubishi Gas Chemical Company, Inc. | 3438 |
56 |
| Rhodia Operations | 1582 |
56 |
| Panasonic Intellectual Property Management Co., Ltd. | 30967 |
55 |
| Henkel AG & Co. KGaA | 10451 |
54 |
| Other owners | 5120 |