Granted Patent
Utility
US 6,086,203 · App. 09/146,888
Progressive addition lenses
Inventors:
Ronald D. Blum, Russell A. Chipman, Amitava Gupta, Edgar V. Menezes
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: Sep 3, 1998
Inventors
Ronald D. Blum
Russell A. Chipman
Amitava Gupta
Edgar V. Menezes
Assignee (at issue)
Johnson & Johnson Vision Care, 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.