Granted Patent
Utility
US 5,618,726 · App. 08/345,261
Biodegradable azo dyes
Inventors:
Andrzej Paszczynski, Stefan Goszczynski, Ronald L. Crawford, Donald L. Crawford, Maria B. Pasti
Patented Case
View Patent ↗
Granted: Apr 8, 1997
Filed: Nov 23, 1994
Inventors
Andrzej Paszczynski
Stefan Goszczynski
Ronald L. Crawford
Donald L. Crawford
Maria B. Pasti
Assignee (at issue)
Idaho Research Foundation
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.