IP Library › Granted Patent US 5,229,441
Granted Patent Utility
US 5,229,441 · App. 07/516,012

Uintaite-derived toners and printing inks

Inventors: Enrique E. Romagosa, John F. Cooper
Patented Case View Patent ↗
Granted: Jul 20, 1993 Filed: Apr 27, 1990
Inventors
Enrique E. Romagosa
John F. Cooper
Assignee (at issue)
AMERICAN GILSONITE COMPANY

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Quick Facts
Patent No.
US 5,229,441
App. No.
07/516,012
Filed
1990-04-27
Granted
1993-07-20
Kind
A