- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 33/20 - Silicates
Patent holdings for IPC class C01B 33/20
Total number of patents in this class: 349
10-year publication summary
17
|
30
|
18
|
28
|
30
|
16
|
28
|
16
|
14
|
7
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
ZS Pharma, Inc. | 51 |
13 |
Universite Paul Sabatier Toulouse III | 473 |
9 |
Nippon Chemical Industrial Co., Ltd. | 267 |
8 |
BASF SE | 19740 |
7 |
Centre National de La Recherche Scientifique | 9632 |
7 |
Asahi Glass Company, Limited | 2985 |
7 |
Taiheiyo Cement Corporation | 237 |
7 |
BASF Corporation | 2039 |
6 |
Tosoh Corporation | 1127 |
6 |
Centre National de La Recherche Scientifique (cnrs) | 3191 |
6 |
Shoei Chemical Inc. | 320 |
5 |
Tokyo Institute of Technology | 1367 |
5 |
BASF (China) Co., Ltd. | 755 |
5 |
3m Innovative Properties Company | 18406 |
4 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
4 |
Sumitomo Chemical Company, Limited | 8808 |
4 |
National Institute of Advanced Industrial Science and Technology | 3677 |
4 |
Nalco Company | 620 |
4 |
Evonik Operations GmbH | 3879 |
4 |
Meishan Boya Advanced Materials Co., Ltd. | 58 |
4 |
Other owners | 230 |