- All sections
- C - Chemistrymetallurgy
- C09C - Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling propertiespreparation of carbon black
- C09C 1/02 - Compounds of alkaline earth metals or magnesium
Patent holdings for IPC class C09C 1/02
Total number of patents in this class: 934
10-year publication summary
|
62
|
80
|
73
|
45
|
53
|
36
|
47
|
31
|
24
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omya International AG | 771 |
320 |
| Omya Development AG | 92 |
42 |
| Coatex S.A.S. | 227 |
27 |
| Schaefer Kalk GmbH & Co. KG | 46 |
18 |
| Maruo Calcium Company Limited | 32 |
16 |
| Imertech SAS | 228 |
16 |
| BASF SE | 20967 |
13 |
| COATEX une société par actions simplifiée | 165 |
13 |
| Imerys Minerals Limited | 118 |
13 |
| E. I. du Pont de Nemours and Company | 4026 |
11 |
| FP-Pigments Oy | 31 |
11 |
| The Chemours Company Fc, LLC | 1245 |
10 |
| Kemira Oyj | 1208 |
10 |
| Shiraishi Kogyo Kaisha, Ltd. | 65 |
10 |
| Imerys USA, Inc. | 145 |
9 |
| Specialty Minerals (Michigan) Inc. | 225 |
8 |
| Stora Enso Oyj | 1650 |
8 |
| 3m Innovative Properties Company | 17813 |
7 |
| Sakai Chemical Industry Co., Ltd. | 276 |
7 |
| ALPHA Calcit Fullstoff Gesellschaft mbH | 15 |
6 |
| Other owners | 359 |