Granted Patent
Utility
US 6,231,184 · App. 09/439,479
Progressive addition lenses
Inventors:
Edgar V. Menezes, Daniel Katzman, William Kokonaski
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Nov 12, 1999
Inventors
Edgar V. Menezes
Daniel Katzman
William Kokonaski
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.