- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 33/18 - Preparation of finely divided silica neither in sol nor in gel formAfter-treatment thereof
Patent holdings for IPC class C01B 33/18
Total number of patents in this class: 1302
10-year publication summary
|
68
|
66
|
91
|
80
|
88
|
107
|
121
|
103
|
111
|
69
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denka Company Limited | 2778 |
60 |
| Evonik Operations GmbH | 4443 |
53 |
| Tokuyama Corporation | 1506 |
40 |
| JGC Catalysts and Chemicals Ltd. | 262 |
32 |
| Evonik Degussa GmbH | 1343 |
29 |
| Admatechs Company Limited | 109 |
29 |
| Agc, Inc. | 5664 |
23 |
| LG Energy Solution, Ltd. | 19725 |
22 |
| AGC Si-Tech Co., Ltd. | 71 |
20 |
| Mitsubishi Chemical Corporation | 4767 |
16 |
| Wacker Chemie AG | 2124 |
15 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 568 |
12 |
| Nissan Chemical Corporation | 2307 |
12 |
| Shin-Etsu Chemical Co., Ltd. | 6157 |
11 |
| Mitsubishi Materials Corporation | 2484 |
11 |
| FUJIFILM Business Innovation Corp. | 8108 |
11 |
| Colgate-Palmolive Company | 5733 |
10 |
| Kao Corporation | 5112 |
10 |
| DIC Corporation | 4000 |
10 |
| Plassein Technologies Ltd, LLC | 23 |
10 |
| Other owners | 866 |