- 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: 953
10-year publication summary
|
81
|
86
|
91
|
51
|
64
|
41
|
50
|
33
|
24
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omya International AG | 810 |
335 |
| Omya Development AG | 98 |
45 |
| Coatex S.A.S. | 228 |
30 |
| Schaefer Kalk GmbH & Co. KG | 48 |
18 |
| Imertech SAS | 224 |
17 |
| BASF SE | 20387 |
14 |
| Imerys Minerals Limited | 129 |
14 |
| COATEX une société par actions simplifiée | 159 |
13 |
| Maruo Calcium Company Limited | 31 |
13 |
| E. I. du Pont de Nemours and Company | 4252 |
11 |
| FP-Pigments Oy | 31 |
11 |
| The Chemours Company Fc, LLC | 1139 |
10 |
| Kemira Oyj | 1205 |
10 |
| Imerys USA, Inc. | 140 |
9 |
| Shiraishi Kogyo Kaisha, Ltd. | 63 |
9 |
| Stora Enso Oyj | 1603 |
8 |
| 3m Innovative Properties Company | 17955 |
7 |
| Sakai Chemical Industry Co., Ltd. | 272 |
7 |
| ALPHA Calcit Fullstoff Gesellschaft mbH | 15 |
6 |
| Mississippi Lime Company | 63 |
6 |
| Other owners | 360 |