Granted Patent
Utility
US 6,808,262 · App. 09/881,548
Multifocal contact lens with aspheric surface
Inventors:
L. Lawrence Chapoy, William Rovani, John B. W. Lett
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Jun 14, 2001
Inventors
L. Lawrence Chapoy
William Rovani
John B. W. Lett
Assignee (at issue)
NOVARTIS AG
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.