- All sections
- C - Chemistrymetallurgy
- C09C - Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling propertiespreparation of carbon black
- C09C 3/06 - Treatment with inorganic compounds
Patent holdings for IPC class C09C 3/06
Total number of patents in this class: 778
10-year publication summary
|
41
|
45
|
47
|
45
|
46
|
49
|
68
|
70
|
53
|
27
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Sheet Glass Company, Limited | 984 |
37 |
| M. Technique Co., Ltd. | 248 |
26 |
| Cqv Co., Ltd. | 70 |
22 |
| Kronos International, Inc. | 112 |
15 |
| The Chemours Company Fc, LLC | 1256 |
14 |
| Toyo Aluminium Kabushiki Kaisha | 350 |
14 |
| Ishihara Sangyo Kaisha, Ltd. | 662 |
13 |
| E. I. du Pont de Nemours and Company | 3988 |
11 |
| DIC Corporation | 3818 |
11 |
| Tronox LLC | 161 |
11 |
| U.S. Silica Company | 107 |
11 |
| FUJIFILM Corporation | 29696 |
10 |
| Merck Patent GmbH | 5767 |
9 |
| ECKART GmbH | 317 |
9 |
| Sakai Chemical Industry Co., Ltd. | 275 |
9 |
| Sumitomo Metal Mining Co., Ltd. | 1795 |
8 |
| PPG Industries Ohio, Inc. | 3444 |
7 |
| JGC Catalysts and Chemicals Ltd. | 256 |
7 |
| Omya International AG | 770 |
7 |
| Evonik Degussa GmbH | 1489 |
6 |
| Other owners | 521 |