- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 33/20 - Silicates
Patent holdings for IPC class C01B 33/20
Total number of patents in this class: 382
10-year publication summary
|
18
|
28
|
30
|
16
|
28
|
17
|
15
|
24
|
29
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ZS Pharma, Inc. | 53 |
14 |
| Nippon Chemical Industrial Co., Ltd. | 295 |
9 |
| Universite Paul Sabatier Toulouse III | 477 |
9 |
| Centre National de La Recherche Scientifique | 11133 |
7 |
| Asahi Glass Company, Limited | 2586 |
7 |
| Taiheiyo Cement Corporation | 247 |
7 |
| BASF Corporation | 1682 |
6 |
| Tosoh Corporation | 1440 |
6 |
| BASF SE | 21334 |
5 |
| Shoei Chemical Inc. | 333 |
5 |
| Tokyo Institute of Technology | 1304 |
5 |
| BASF (China) Co., Ltd. | 892 |
5 |
| 3m Innovative Properties Company | 17443 |
4 |
| Panasonic Intellectual Property Management Co., Ltd. | 34623 |
4 |
| Massachusetts Institute of Technology | 10322 |
4 |
| Sumitomo Chemical Company, Limited | 8992 |
4 |
| Nalco Company | 528 |
4 |
| National Institute for Materials Science | 1092 |
4 |
| Nippon Electric Glass Co., Ltd. | 2571 |
4 |
| Toagosei Co., Ltd. | 1033 |
4 |
| Other owners | 265 |