Granted Patent
Utility
US 4,439,362 · App. 05/813,485
Azo compounds having one or two 1,4-dioxanylmethoxycarbonyl-alkyl or -alkoxyalkyl groups
Inventor:
Klaus Koerte
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Jul 7, 1977
Inventor
Klaus Koerte
Assignee (at issue)
Sandoz AG
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.