- All sections
- C - Chemistry; metallurgy
- C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K 3/04 - Carbon
Patent holdings for IPC class C08K 3/04
Total number of patents in this class: 8739
10-year publication summary
|
535
|
597
|
704
|
798
|
963
|
874
|
832
|
755
|
747
|
557
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bridgestone Corporation | 7132 |
410 |
| The Yokohama Rubber Co., Ltd. | 3952 |
220 |
| Compagnie Generale des Etablissements Michelin | 4537 |
182 |
| Sumitomo Rubber Industries, Ltd. | 4384 |
178 |
| Zeon Corporation | 3980 |
155 |
| LG Chem, Ltd. | 17498 |
153 |
| Compagnie générale des établissements Michelin SCA | 2474 |
135 |
| Bridgestone Americas Tire Operations, LLC | 1011 |
91 |
| Borealis AG | 2651 |
84 |
| Sekisui Chemical Co., Ltd. | 3247 |
84 |
| Dow Global Technologies LLC | 10297 |
80 |
| Sumitomo Chemical Company, Limited | 8916 |
79 |
| Cabot Corporation | 572 |
68 |
| The Goodyear Tire & Rubber Company | 2575 |
65 |
| BASF SE | 20146 |
64 |
| Daikin Industries, Ltd. | 9709 |
60 |
| NOK Corporation | 2146 |
59 |
| Kuraray Co., Ltd. | 3412 |
58 |
| Michelin Recherche et Technique S.A. | 2272 |
56 |
| 3m Innovative Properties Company | 18119 |
54 |
| Other owners | 6404 |