- 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: 1135
10-year publication summary
|
53
|
82
|
68
|
85
|
79
|
76
|
58
|
47
|
64
|
27
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evonik Operations GmbH | 4286 |
29 |
| Rhodia Operations | 1515 |
25 |
| JGC Catalysts and Chemicals Ltd. | 259 |
20 |
| Agc, Inc. | 5396 |
16 |
| Versum Materials US, LLC | 671 |
14 |
| Sumitomo Chemical Company, Limited | 9014 |
11 |
| Shin-Etsu Chemical Co., Ltd. | 6004 |
11 |
| Samsung SDI Co., Ltd. | 10288 |
10 |
| DIC Corporation | 3926 |
10 |
| Denka Company Limited | 2717 |
9 |
| Saudi Arabian Oil Company | 13969 |
9 |
| Tokuyama Corporation | 1461 |
9 |
| Kao Corporation | 5051 |
8 |
| National Institute of Advanced Industrial Science and Technology | 3792 |
8 |
| AGC Si-Tech Co., Ltd. | 70 |
8 |
| Nippon Sheet Glass Company, Limited | 960 |
8 |
| BASF SE | 21171 |
7 |
| The Regents of the University of California | 20611 |
7 |
| Evonik Degussa GmbH | 1398 |
7 |
| Panasonic Intellectual Property Management Co., Ltd. | 33839 |
7 |
| Other owners | 902 |