- 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 1/42 - Clays
Patent holdings for IPC class C09C 1/42
Total number of patents in this class: 267
10-year publication summary
|
7
|
12
|
24
|
12
|
19
|
10
|
10
|
12
|
7
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omya International AG | 816 |
16 |
| BASF Corporation | 2039 |
10 |
| Imerys Minerals Limited | 131 |
9 |
| U.S. Silica Company | 99 |
8 |
| BYK-Chemie GmbH | 437 |
7 |
| Omya Development AG | 100 |
7 |
| BASF SE | 19740 |
5 |
| Imerys Kaolin, Inc. | 20 |
5 |
| Unilever PLC | 3540 |
4 |
| Unilever N.V. | 3440 |
4 |
| COATEX une société par actions simplifiée | 150 |
4 |
| Hindustan Unilever Limited | 1281 |
4 |
| Imerys Pigments, Inc. | 55 |
4 |
| Nalco Company | 620 |
4 |
| Universite Paul Sabatier Toulouse III | 473 |
4 |
| Imertech SAS | 224 |
4 |
| Centre National de La Recherche Scientifique | 9632 |
3 |
| Henkel AG & Co. KGaA | 10129 |
3 |
| Burgess Pigment Company | 16 |
3 |
| Cabot Corporation | 575 |
3 |
| Other owners | 156 |