- 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: 1255
10-year publication summary
|
67
|
63
|
86
|
78
|
84
|
100
|
116
|
99
|
99
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denka Company Limited | 2674 |
58 |
| Evonik Operations GmbH | 4210 |
48 |
| Tokuyama Corporation | 1451 |
37 |
| Evonik Degussa GmbH | 1436 |
32 |
| JGC Catalysts and Chemicals Ltd. | 255 |
32 |
| Admatechs Company Limited | 87 |
22 |
| LG Energy Solution, Ltd. | 16647 |
18 |
| AGC Si-Tech Co., Ltd. | 65 |
17 |
| Denki Kagaku Kogyo Kabushiki Kaisha | 610 |
17 |
| Wacker Chemie AG | 2102 |
17 |
| Agc, Inc. | 5142 |
17 |
| Mitsubishi Chemical Corporation | 4662 |
15 |
| Nissan Chemical Corporation | 2131 |
12 |
| Mitsubishi Materials Corporation | 2468 |
11 |
| Colgate-Palmolive Company | 5745 |
10 |
| Shin-Etsu Chemical Co., Ltd. | 5856 |
10 |
| The Regents of the University of California | 20366 |
9 |
| Kao Corporation | 5026 |
9 |
| DIC Corporation | 3891 |
9 |
| FUJIFILM Business Innovation Corp. | 7774 |
9 |
| Other owners | 846 |