- All sections
- C - Chemistrymetallurgy
- C09C - Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling propertiespreparation of carbon black
- C09C 1/42 - Clays
Patent holdings for IPC class C09C 1/42
Total number of patents in this class: 239
10-year publication summary
|
12
|
24
|
12
|
19
|
10
|
10
|
12
|
7
|
9
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omya International AG | 774 |
13 |
| BASF Corporation | 1715 |
9 |
| U.S. Silica Company | 102 |
8 |
| BYK-Chemie GmbH | 443 |
7 |
| Omya Development AG | 92 |
7 |
| Imerys Minerals Limited | 118 |
6 |
| BASF SE | 20915 |
5 |
| Unilever PLC | 3193 |
4 |
| Unilever N.V. | 3100 |
4 |
| Burgess Pigment Company | 17 |
4 |
| Cabot Corporation | 550 |
4 |
| COATEX une société par actions simplifiée | 164 |
4 |
| Hindustan Unilever Limited | 1173 |
4 |
| Nalco Company | 561 |
4 |
| Universite Paul Sabatier Toulouse III | 476 |
4 |
| Imertech SAS | 231 |
4 |
| Centre National de La Recherche Scientifique | 10442 |
3 |
| Henkel AG & Co. KGaA | 10584 |
3 |
| Saudi Arabian Oil Company | 13206 |
3 |
| Sun Chemical Corporation | 837 |
3 |
| Other owners | 136 |