Colorant
US7667047B2 · kind B2 · utility
1Cited by
0References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2008 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Oct 2, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0025
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A colorant contains a crystal of a compound represented by the following formula (1):the crystal having a crystal form showing main peaks at interplanar spacings d of 3.45±0.5 Å, 3.63±0.5 Å, 4.23±0.5 Å, 6.65±0.5 Å, and 7.84±0.5 Å in powder X-ray diffraction pattern with CuKα radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.