Granted Patent
Utility
US 4,377,650 · App. 06/202,559
Process for the preparation of colored powders of hydrolyzed ethylene-vinyl acetate copolymer
Inventor:
Joseph Fischer
Patented Case
View Patent ↗
Granted: Mar 22, 1983
Filed: Oct 31, 1980
Inventor
Joseph Fischer
Assignee (at issue)
National Distillers and Chemical Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.