- All sections
- C - Chemistry; metallurgy
- C09C - Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties; preparation of carbon black
- C09C 1/28 - Compounds of silicon
Patent holdings for IPC class C09C 1/28
Total number of patents in this class: 338
10-year publication summary
|
40
|
30
|
21
|
22
|
34
|
19
|
17
|
13
|
27
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Sheet Glass Company, Limited | 992 |
22 |
| Rhodia Operations | 1645 |
11 |
| 3m Innovative Properties Company | 18406 |
8 |
| Nissan Chemical Corporation | 1725 |
8 |
| Evonik Operations GmbH | 3879 |
8 |
| Evonik Degussa GmbH | 1574 |
5 |
| PPG Industries Ohio, Inc. | 3430 |
5 |
| Fujimi Incorporated | 676 |
5 |
| Wacker Chemie AG | 2091 |
5 |
| Imertech SAS | 224 |
5 |
| Centre National de La Recherche Scientifique | 9632 |
4 |
| Universite Paul Sabatier Toulouse III | 473 |
4 |
| W.R. Grace & Co.-conn. | 372 |
4 |
| Agency for Science, Technology and Research | 3512 |
3 |
| Boe Technology Group Co., Ltd. | 35384 |
3 |
| Cqv Co., Ltd. | 70 |
3 |
| Imerys Talc Europe | 65 |
3 |
| Imerys USA, Inc. | 135 |
3 |
| Nalco Company | 620 |
3 |
| Toda Kogyo Corporation | 323 |
3 |
| Other owners | 223 |