Silicon dioxide powder having special surface properties and toner composition containing said powder
US9097996B2 · kind B2 · utility
7Cited by
0References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2011 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Apr 7, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to silicon dioxide powder which is present in the form of aggregated primary particles having an average diameter of at least 40 nm and a ratio of the BET surface area to the STSA surface area of at least 3.5. The invention also relates to a toner composition containing said silicon dioxide powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.