- All sections
- C - Chemistry; metallurgy
- C01F - Compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare earth metals
- C01F 11/18 - Carbonates
Patent holdings for IPC class C01F 11/18
Total number of patents in this class: 978
10-year publication summary
78
|
83
|
78
|
89
|
57
|
56
|
74
|
85
|
105
|
33
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Omya International AG | 816 |
138 |
Arelac, Inc. | 101 |
34 |
Omya Development AG | 100 |
20 |
Blue Planet Systems Corporation | 65 |
17 |
Shiraishi Kogyo Kaisha, Ltd. | 65 |
16 |
Amorphical Ltd. | 58 |
15 |
Specialty Minerals (Michigan) Inc. | 209 |
14 |
Kyushu University, National University Corporation | 1572 |
12 |
Maruo Calcium Company Limited | 30 |
10 |
The Regents of the University of California | 18943 |
9 |
Coatex S.A.S. | 231 |
9 |
Korea Institute of Geoscience and Mineral Resources | 222 |
9 |
Shinko Sangyo Co., Ltd. | 19 |
9 |
Solvay SA | 1181 |
9 |
Stora Enso Oyj | 1504 |
9 |
Mangrove Water Technologies Ltd. | 26 |
9 |
FP-Pigments Oy | 33 |
8 |
S.A. Lhoist Recherche et Developpement | 163 |
8 |
Schaefer Kalk GmbH & Co. KG | 50 |
8 |
Shiraishi Central Laboratories Co., Ltd. | 20 |
8 |
Other owners | 607 |