Granted Patent
Utility
US 5,420,361 · App. 08/240,125
Formulation of and dehydration of hydroxylated diphenyl acetylenes
Inventor:
Alan D. Grund
Patented Case
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Granted: May 30, 1995
Filed: May 10, 1994
Inventor
Alan D. Grund
Assignee (at issue)
Bio-Technical Resources
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.