- 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
|
67
|
36
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Evonik Operations GmbH | 4374 |
27 |
| Rhodia Operations | 1490 |
24 |
| JGC Catalysts and Chemicals Ltd. | 259 |
19 |
| Agc, Inc. | 5557 |
15 |
| Versum Materials US, LLC | 677 |
14 |
| Sumitomo Chemical Company, Limited | 8968 |
11 |
| Shin-Etsu Chemical Co., Ltd. | 6113 |
11 |
| Samsung SDI Co., Ltd. | 10671 |
10 |
| DIC Corporation | 3965 |
10 |
| Denka Company Limited | 2735 |
9 |
| Saudi Arabian Oil Company | 14275 |
9 |
| Tokuyama Corporation | 1482 |
9 |
| Kao Corporation | 5078 |
8 |
| National Institute of Advanced Industrial Science and Technology | 3793 |
8 |
| AGC Si-Tech Co., Ltd. | 70 |
8 |
| Nippon Sheet Glass Company, Limited | 955 |
8 |
| LG Energy Solution, Ltd. | 19136 |
8 |
| BASF SE | 21318 |
7 |
| The Regents of the University of California | 20790 |
7 |
| Evonik Degussa GmbH | 1367 |
7 |
| Other owners | 906 |