- All sections
- C - Chemistrymetallurgy
- 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: 9301
10-year publication summary
|
597
|
704
|
801
|
964
|
877
|
844
|
767
|
761
|
710
|
421
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bridgestone Corporation | 7247 |
437 |
| The Yokohama Rubber Co., Ltd. | 4034 |
227 |
| Compagnie Generale des Etablissements Michelin | 4743 |
195 |
| Sumitomo Rubber Industries, Ltd. | 4591 |
183 |
| Zeon Corporation | 4080 |
168 |
| LG Chem, Ltd. | 17615 |
158 |
| Compagnie générale des établissements Michelin SCA | 2571 |
145 |
| Bridgestone Americas Tire Operations, LLC | 1069 |
98 |
| Borealis AG | 2803 |
93 |
| Sekisui Chemical Co., Ltd. | 3386 |
85 |
| The Goodyear Tire & Rubber Company | 2555 |
80 |
| Sumitomo Chemical Company, Limited | 9046 |
79 |
| Dow Global Technologies LLC | 10353 |
73 |
| Cabot Corporation | 551 |
70 |
| Daikin Industries, Ltd. | 9995 |
67 |
| Kuraray Co., Ltd. | 3503 |
67 |
| BASF SE | 20912 |
65 |
| NOK Corporation | 2219 |
61 |
| Michelin Recherche et Technique S.A. | 2175 |
56 |
| Toray Industries, Inc. | 6935 |
56 |
| Other owners | 6838 |