IP Library › Granted Patent US 4,725,284
Granted Patent Utility
US 4,725,284 · App. 06/886,644

Thermal transfer printing with z-alkyl-phenoxy anthraquinone dye mixture

Inventors: William B. Black, Roy Bradbury, Peter Gregory, Roy Porter, Geoffrey R. Rothwell
Patented Case View Patent ↗
Granted: Feb 16, 1988 Filed: Jul 18, 1986
Inventors
William B. Black
Roy Bradbury
Peter Gregory
Roy Porter
Geoffrey R. Rothwell
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED

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Quick Facts
Patent No.
US 4,725,284
App. No.
06/886,644
Filed
1986-07-18
Granted
1988-02-16
Kind
A