Granted Patent
Utility
US 5,283,367 · App. 07/701,268
Substituted 1,4-diamino-2-butene stabilizers
Inventors:
Joseph E. Babiarz, Glen T. Cunkle, Werner Rutsch
Patented Case
View Patent ↗
Granted: Feb 1, 1994
Filed: May 16, 1991
Inventors
Joseph E. Babiarz
Glen T. Cunkle
Werner Rutsch
Assignee (at issue)
Ciba-Geigy
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.