Patent · US Active

IR dyes and laser markable articles comprising such IR dyes

US9821586B2 · kind B2 · utility

0Cited by
2References
15Claims
0Family size

Assignee

Inventor

Key dates

Filing dateApr 27, 2015
Grant dateNov 21, 2017
Priority date—
Expiry dateApr 27, 2035

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB41M2205/42
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

Infrared dyes having an infrared absorption maximum above 1130 nm with minor colouration in the visual spectrum. The infrared dyes are especially useful for producing multicolour laser marked security documents having reduced background coloration and enhanced colour gamut.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.