- 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 1/02 - Compounds of alkaline earth metals or magnesium
Patent holdings for IPC class C09C 1/02
Total number of patents in this class: 964
10-year publication summary
97
|
81
|
86
|
91
|
51
|
64
|
41
|
50
|
32
|
7
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Omya International AG | 816 |
342 |
Omya Development AG | 100 |
47 |
Coatex S.A.S. | 231 |
30 |
Schaefer Kalk GmbH & Co. KG | 50 |
18 |
Imertech SAS | 224 |
16 |
Imerys Minerals Limited | 131 |
14 |
BASF SE | 19740 |
13 |
COATEX une société par actions simplifiée | 150 |
13 |
E. I. du Pont de Nemours and Company | 4345 |
11 |
FP-Pigments Oy | 33 |
11 |
Maruo Calcium Company Limited | 30 |
11 |
The Chemours Company Fc, LLC | 1107 |
10 |
Imerys USA, Inc. | 135 |
10 |
Kemira Oyj | 1167 |
10 |
Shiraishi Kogyo Kaisha, Ltd. | 65 |
10 |
Sakai Chemical Industry Co., Ltd. | 266 |
8 |
Stora Enso Oyj | 1504 |
8 |
3m Innovative Properties Company | 18406 |
7 |
ALPHA Calcit Fullstoff Gesellschaft mbH | 15 |
7 |
Specialty Minerals (Michigan) Inc. | 209 |
7 |
Other owners | 361 |