Granted Patent
Utility
US 5,236,486 · App. 07/782,164
Shaped gradient fabrication in lenses by molding from axial gradient
Inventors:
Richard Blankenbecler, Max A. Wickson
Patented Case
View Patent ↗
Granted: Aug 17, 1993
Filed: Oct 24, 1991
Inventors
Richard Blankenbecler
Max A. Wickson
Assignee (at issue)
LightPath Technologies, 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.