- 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: 8458
10-year publication summary
535
|
597
|
703
|
797
|
962
|
868
|
825
|
738
|
734
|
222
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Bridgestone Corporation | 7067 |
399 |
The Yokohama Rubber Co., Ltd. | 3929 |
211 |
Sumitomo Rubber Industries, Ltd. | 4421 |
178 |
Compagnie Generale des Etablissements Michelin | 4450 |
161 |
LG Chem, Ltd. | 17205 |
153 |
Zeon Corporation | 3854 |
150 |
Compagnie générale des établissements Michelin SCA | 2477 |
136 |
Bridgestone Americas Tire Operations, LLC | 990 |
88 |
Borealis AG | 2558 |
82 |
Dow Global Technologies LLC | 10147 |
81 |
Sekisui Chemical Co., Ltd. | 3159 |
80 |
Sumitomo Chemical Company, Limited | 8808 |
79 |
Cabot Corporation | 575 |
69 |
BASF SE | 19740 |
63 |
The Goodyear Tire & Rubber Company | 2569 |
63 |
Daikin Industries, Ltd. | 9495 |
60 |
Kuraray Co., Ltd. | 3392 |
59 |
NOK Corporation | 2108 |
57 |
3m Innovative Properties Company | 18406 |
56 |
Michelin Recherche et Technique S.A. | 2328 |
56 |
Other owners | 6177 |