Granted Patent
Utility
US 5,455,641 · App. 08/361,896
Soft contact lens having toric rear face and rotationally symmetrical front face
Inventors:
Christoph Hahne, Peter Hofer, Willi Horner, Martin Reichner
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Dec 22, 1994
Inventors
Christoph Hahne
Peter Hofer
Willi Horner
Martin Reichner
Assignee (at issue)
Ciba-Geigy
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.