- All sections
- C - Chemistrymetallurgy
- 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: 1185
10-year publication summary
|
78
|
89
|
57
|
56
|
75
|
86
|
110
|
103
|
112
|
92
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omya International AG | 780 |
133 |
| Arelac, Inc. | 118 |
41 |
| Sumitomo Osaka Cement Co., Ltd. | 919 |
21 |
| Blue Planet Systems Corporation | 78 |
21 |
| Amorphical Ltd. | 72 |
20 |
| Specialty Minerals (Michigan) Inc. | 234 |
17 |
| Kyushu University, National University Corporation | 1737 |
16 |
| Shiraishi Kogyo Kaisha, Ltd. | 66 |
16 |
| Shiraishi Central Laboratories Co., Ltd. | 28 |
14 |
| The Regents of the University of California | 20960 |
13 |
| Maruo Calcium Company Limited | 29 |
12 |
| Omya Development AG | 82 |
12 |
| Mangrove Water Technologies Ltd. | 37 |
12 |
| Carbon Engineering ULC | 83 |
11 |
| Konoshima Chemical Co., Ltd. | 68 |
10 |
| Saudi Arabian Oil Company | 14398 |
10 |
| Carbonfree Chemicals Holdings, LLC | 37 |
10 |
| Idemitsu Kosan Co., Ltd. | 4298 |
9 |
| Shinko Sangyo Co., Ltd. | 19 |
9 |
| Stora Enso Oyj | 1662 |
9 |
| Other owners | 769 |