- All sections
- C - Chemistry; metallurgy
- C09C - Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties; preparation of carbon black
- C09C 3/04 - Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
Patent holdings for IPC class C09C 3/04
Total number of patents in this class: 410
10-year publication summary
|
17
|
26
|
22
|
17
|
27
|
30
|
46
|
33
|
36
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omya International AG | 810 |
52 |
| Coatex S.A.S. | 229 |
13 |
| Omya Development AG | 98 |
12 |
| DIC Corporation | 3669 |
9 |
| Imerys Minerals Limited | 129 |
7 |
| Evonik Degussa GmbH | 1557 |
5 |
| COATEX une société par actions simplifiée | 159 |
5 |
| Denka Company Limited | 2459 |
5 |
| Graphene Platform Corporation | 24 |
5 |
| Carbon Upcycling Technologies Inc. | 21 |
5 |
| 3m Innovative Properties Company | 17957 |
4 |
| BASF SE | 20432 |
4 |
| Asahi Kasei Kabushiki Kaisha | 2556 |
4 |
| Kronos International, Inc. | 103 |
4 |
| Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences | 40 |
4 |
| Lubrizol Advanced Materials, Inc. | 941 |
4 |
| Sun Chemical Corporation | 864 |
4 |
| PPG Industries Ohio, Inc. | 3449 |
3 |
| Borealis Agrolinz Melamine GmbH | 24 |
3 |
| ECKART GmbH | 329 |
3 |
| Other owners | 255 |