- 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: 349
10-year publication summary
|
30
|
21
|
22
|
32
|
19
|
17
|
15
|
29
|
18
|
11
|
| 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 | 991 |
22 |
| Nissan Chemical Corporation | 2028 |
12 |
| Rhodia Operations | 1586 |
11 |
| 3m Innovative Properties Company | 17819 |
8 |
| Evonik Operations GmbH | 4117 |
7 |
| Evonik Degussa GmbH | 1525 |
5 |
| PPG Industries Ohio, Inc. | 3448 |
5 |
| Fujimi Incorporated | 742 |
5 |
| Wacker Chemie AG | 2109 |
5 |
| Imertech SAS | 231 |
5 |
| Centre National de La Recherche Scientifique | 10442 |
4 |
| Tokuyama Corporation | 1394 |
4 |
| Universite Paul Sabatier Toulouse III | 476 |
4 |
| W.R. Grace & Co.-conn. | 368 |
4 |
| ionobell Inc | 30 |
4 |
| The Goodyear Tire & Rubber Company | 2503 |
3 |
| Agency for Science, Technology and Research | 3627 |
3 |
| Boe Technology Group Co., Ltd. | 41267 |
3 |
| Aspen Aerogels, Inc. | 250 |
3 |
| Cqv Co., Ltd. | 69 |
3 |
| Other owners | 229 |