- All sections
- C - Chemistrymetallurgy
- C09C - Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling propertiespreparation of carbon black
- C09C 1/28 - Compounds of silicon
Patent holdings for IPC class C09C 1/28
Total number of patents in this class: 351
10-year publication summary
|
25
|
21
|
18
|
30
|
16
|
17
|
15
|
28
|
18
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Sheet Glass Company, Limited | 978 |
22 |
| Nissan Chemical Corporation | 2097 |
12 |
| Rhodia Operations | 1578 |
11 |
| 3m Innovative Properties Company | 17737 |
8 |
| Evonik Operations GmbH | 4163 |
7 |
| Evonik Degussa GmbH | 1460 |
5 |
| PPG Industries Ohio, Inc. | 3417 |
5 |
| Fujimi Incorporated | 765 |
5 |
| Wacker Chemie AG | 2107 |
5 |
| Imertech SAS | 230 |
5 |
| Centre National de La Recherche Scientifique | 10666 |
4 |
| Agency for Science, Technology and Research | 3648 |
4 |
| Tokuyama Corporation | 1424 |
4 |
| Universite Paul Sabatier Toulouse III | 477 |
4 |
| W.R. Grace & Co.-conn. | 364 |
4 |
| ionobell Inc | 30 |
4 |
| The Goodyear Tire & Rubber Company | 2443 |
3 |
| Boe Technology Group Co., Ltd. | 41648 |
3 |
| Aspen Aerogels, Inc. | 257 |
3 |
| Cqv Co., Ltd. | 72 |
3 |
| Other owners | 230 |