- All sections
- C - Chemistrymetallurgy
- C09C - Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling propertiespreparation of carbon black
- C09C 3/08 - Treatment with low-molecular-weight organic compounds
Patent holdings for IPC class C09C 3/08
Total number of patents in this class: 721
10-year publication summary
|
61
|
43
|
45
|
35
|
32
|
72
|
50
|
45
|
38
|
28
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omya International AG | 777 |
31 |
| DIC Corporation | 3965 |
17 |
| 3m Innovative Properties Company | 17481 |
16 |
| Toyo Aluminium Kabushiki Kaisha | 349 |
15 |
| Daicel Corporation | 2526 |
13 |
| Ishihara Sangyo Kaisha, Ltd. | 659 |
13 |
| FUJIFILM Corporation | 30516 |
12 |
| Dowa Electronics Materials Co., Ltd. | 636 |
10 |
| Sakai Chemical Industry Co., Ltd. | 284 |
10 |
| Maruo Calcium Company Limited | 29 |
9 |
| BASF SE | 21308 |
8 |
| PPG Industries Ohio, Inc. | 3328 |
8 |
| Shiraishi Kogyo Kaisha, Ltd. | 67 |
8 |
| Sumitomo Osaka Cement Co., Ltd. | 895 |
8 |
| Nissan Chemical Corporation | 2229 |
8 |
| E. I. du Pont de Nemours and Company | 3526 |
7 |
| Cabot Corporation | 543 |
7 |
| The Chemours Company Fc, LLC | 1346 |
7 |
| Nippon Sheet Glass Company, Limited | 955 |
7 |
| Imertech SAS | 245 |
7 |
| Other owners | 500 |