Granted Patent
Utility
US 5,240,946 · App. 07/875,925
((2-(amino-3,4-dioxo-1-cyclobuten-1-yl)amino)alkyl)-acid derivatives
Inventors:
William A. Kinney, Deanna C. Garrison
Patented Case
View Patent ↗
Granted: Aug 31, 1993
Filed: Apr 29, 1992
Inventors
William A. Kinney
Deanna C. Garrison
Assignee (at issue)
Amerimas Home Products, Inc.
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.