US 6,030,000 · Granted 2000-02-29
Negotiable document having enhanced security for deterring fraud by use of a thermochromatic fingerprint image
A negotiable document having enhanced security for deterring fraud includes at least one thermochromatic fingerprint image printed with thermochromatic ink, wherein said thermochromatic fingerprint image will fade when heat is transferred to the image from a live human hand. The negotiable document further includes a warning clause that the negotiable document may be fraudulent without the thermochromatic fingerprint image.
Patent details
- Publication number
- US 6,030,000
- Filing date
- 1997-10-24
- Grant date
- 2000-02-29
- Assignee
- Diamond Security, Inc.
- Inventor(s)
- DIAMOND; ROBERT I.
- CPC class
- B41M3/10
Want to file your own patent?
Run your idea through our free scanner — we’ll show you which existing patents are conceptually closest, including this one if it’s a match.
Free patentability scan