Fingerprint ink
US5919292A · kind A · utility
10Cited by
11References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1998 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | Feb 17, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fingerprint ink is formulated from a solvent carrier and a low structure carbon dispersion. Carbon particles with an agglomerate size of less than 100 millimicrons are dispersed in a hydrocarbon soluble oleo resin to form the low structure carbon dispersion, with the carbon particles accounting for about 40% to 60% of the total dispersion and the dispersion accounting for 20% or less of the total ink formulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.