INKS WHICH FLUORESCE WHEN EXPOSED TO NEAR OR MIDDLE ULTRAVIOLET RADIATION

• US 3,804,774 A
• Filed: 08/03/1972
• Issued: 04/16/1974
• Est. Priority Date: 08/03/1972
• Status: Expired due to Term

• Current Assignee: Betts J, Fotland R, Petro V
• Original Assignee: Betts J, Fotland R, Petro V
• Inventors: BETTS J, FOTLAND R, PETRO V
• Application Number:
  US05/277,704
• Time in Patent Office: 621 Days
• US Class Current: 252/301.35
• CPC Class Codes: C09D 11/00 Inks

Abstract

BLUE INKS WHICH, WHEN DRY, FLUORESCE WITH VERY SHORT LUMINESCENT LIFETIMES WHEN EXPOSED TO NEAR U.V. OR MIDDLE U.V. COMPRISE SUITABLE POLYMERS IN WHICH CERTAIN ANTHRACENES ARE DISSOLVED OR DISPERSED.

Claims