Granted Patent
Utility
US 4,769,495 · App. 06/935,955
Perfluoro-keto-ylids as precursors of polychloroketones, 1,2-diketones and quinoxalines
Inventor:
Keith B. Baucom
Patented Case
View Patent ↗
Granted: Sep 6, 1988
Filed: Nov 28, 1986
Inventor
Keith B. Baucom
Assignee (at issue)
PCR, 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.