Granted Patent
Utility
US 5,861,935 · App. 08/782,493
Progressive lens elements and methods for designing and using same
Inventors:
Michael Alan Morris, Eric F. Barkan, Simon John Edwards, Dimitrios Jack Kris, Anthony Alan Lee, Mark Mattison-Shupnick, Colin Maurice Perrott, Karen Lee Roberts, David H. Sklar
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: Jan 10, 1997
Inventors
Michael Alan Morris
Eric F. Barkan
Simon John Edwards
Dimitrios Jack Kris
Anthony Alan Lee
Mark Mattison-Shupnick
Colin Maurice Perrott
Karen Lee Roberts
David H. Sklar
Assignee (at issue)
Sola International Holdings Ltd.
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.