Granted Patent
Utility
US 5,158,718 · App. 07/747,802
Contact lens casting
Inventors:
Ashok R. Thakrar, Norman M. Van Houten, John M. Evans, Richard S. Skipper, Peter H. Stafford, John T. Phoenix
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Aug 19, 1991
Inventors
Ashok R. Thakrar
Norman M. Van Houten
John M. Evans
Richard S. Skipper
Peter H. Stafford
John T. Phoenix
Assignee (at issue)
Pilkington Visioncare 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.