Granted Patent
Utility
US 5,403,853 · App. 08/259,210
Substituted N-aryl-1,2-diaminocyclobutene-3,4-diones
Inventors:
John A. Butera, Schuyler A. Antane
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Jun 13, 1994
Inventors
John A. Butera
Schuyler A. Antane
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.