- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 33/12 - SilicaHydrates thereof, e.g. lepidoic silicic acid
Patent holdings for IPC class C01B 33/12
Total number of patents in this class: 1122
10-year publication summary
|
51
|
75
|
60
|
79
|
76
|
70
|
54
|
45
|
60
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evonik Operations GmbH | 4218 |
30 |
| Rhodia Operations | 1527 |
25 |
| JGC Catalysts and Chemicals Ltd. | 257 |
20 |
| Agc, Inc. | 5264 |
16 |
| Versum Materials US, LLC | 664 |
13 |
| Sumitomo Chemical Company, Limited | 9046 |
11 |
| Shin-Etsu Chemical Co., Ltd. | 5918 |
11 |
| Samsung SDI Co., Ltd. | 9658 |
10 |
| DIC Corporation | 3899 |
10 |
| Denka Company Limited | 2692 |
9 |
| Saudi Arabian Oil Company | 13940 |
9 |
| Tokuyama Corporation | 1450 |
9 |
| The Regents of the University of California | 20473 |
8 |
| Kao Corporation | 5019 |
8 |
| National Institute of Advanced Industrial Science and Technology | 3793 |
8 |
| AGC Si-Tech Co., Ltd. | 69 |
8 |
| Nippon Sheet Glass Company, Limited | 959 |
8 |
| BASF SE | 21127 |
7 |
| Evonik Degussa GmbH | 1424 |
7 |
| Panasonic Intellectual Property Management Co., Ltd. | 33401 |
7 |
| Other owners | 888 |