Granted Patent
Utility
US 6,796,653 · App. 09/977,233
Aspherical spectacle lens with geometric center spaced from framing reference point and processing method thereof
Inventor:
Moriyasu Shirayanagi
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Oct 16, 2001
Inventor
Moriyasu Shirayanagi
Assignee (at issue)
Pentax Corporation
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.