Patent · US Expired

Phenazine leucodyes for electrochromic recording

US4478687A · kind A · utility

6Cited by
6References
5Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 30, 1983
Grant dateOct 23, 1984
Priority date—
Expiry dateDec 30, 2003

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB41M5/20
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Certain phenazine leucodyes are useful in electrochromic recording systems.

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