Granted Patent
Utility
US 5,545,660 · App. 08/318,670
Hydrazide derivatives of 3,4-dihydro-2H-1-benzopyrans
Inventors:
J. Martin Grisar, Margaret Petty, Frank Bolkenius
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Oct 6, 1994
Inventors
J. Martin Grisar
Margaret Petty
Frank Bolkenius
Assignee (at issue)
Merrell Pharmaceuticals, 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.