- 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: 906
10-year publication summary
|
86
|
91
|
52
|
64
|
41
|
51
|
33
|
27
|
18
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omya International AG | 780 |
318 |
| Omya Development AG | 82 |
38 |
| Coatex S.A.S. | 209 |
21 |
| Imertech SAS | 244 |
17 |
| Maruo Calcium Company Limited | 29 |
15 |
| Schaefer Kalk GmbH & Co. KG | 45 |
15 |
| BASF SE | 21320 |
14 |
| COATEX une société par actions simplifiée | 176 |
14 |
| Imerys Minerals Limited | 115 |
12 |
| E. I. du Pont de Nemours and Company | 3473 |
11 |
| FP-Pigments Oy | 30 |
11 |
| Shiraishi Kogyo Kaisha, Ltd. | 67 |
11 |
| The Chemours Company Fc, LLC | 1348 |
10 |
| Specialty Minerals (Michigan) Inc. | 234 |
10 |
| Imerys USA, Inc. | 137 |
9 |
| Kemira Oyj | 1264 |
9 |
| Stora Enso Oyj | 1660 |
8 |
| 3m Innovative Properties Company | 17459 |
7 |
| Sakai Chemical Industry Co., Ltd. | 285 |
7 |
| Mississippi Lime Company | 39 |
6 |
| Other owners | 343 |