- 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 11/46 - Sulfates
Patent holdings for IPC class C01F 11/46
Total number of patents in this class: 365
10-year publication summary
19
|
21
|
41
|
34
|
40
|
17
|
26
|
20
|
33
|
10
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sakai Chemical Industry Co., Ltd. | 266 |
16 |
Yoshino Gypsum Co., Ltd. | 224 |
14 |
Kemira Oyj | 1167 |
9 |
Knauf Gips KG | 534 |
8 |
ThyssenKrupp AG | 3086 |
8 |
ThyssenKrupp Industrial Solutions AG | 729 |
8 |
Tokuyama Corporation | 1248 |
8 |
United States Gypsum Company | 1019 |
7 |
Saudi Arabian Oil Company | 11322 |
6 |
Kingenta Norsterra Chemical Co., Ltd. | 8 |
6 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
5 |
CertainTeed Gypsum, Inc. | 180 |
5 |
Easymining Sweden AB | 59 |
5 |
Mitsubishi Materials Corporation | 2378 |
5 |
Avertana Limited | 12 |
5 |
Advanced Fusion Systems LLC | 66 |
4 |
Lidds AB | 21 |
4 |
Sachtleben Chemie GmbH | 73 |
4 |
BASF Construction Solutions GmbH | 13 |
3 |
Kingenta Ecological Engineering Group Co., Ltd. | 8 |
3 |
Other owners | 232 |