The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 1995
Filed:
Dec. 22, 1994
Applicant:
Inventors:
Christoph Hahne, Essen, DE;
Peter Hofer, Aschaffenburg, DE;
Willi Horner, Sulzbach, DE;
Martin Reichner, Aschaffenburg, DE;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02C / ;
U.S. Cl.
CPC ...
3511 / ; 351161 ; 351176 ;
Abstract
The soft toric contact lens has a substantially rotationally symmetrical front face optionally having a rotationally symmetrical lenticular construction, and a substantially aspherical, especially ellipsoidal, rear face. The optically active central region of the rear face is toric. Shifting the torus to the central region of the lens rear face results in lenses that are economic to produce, are of wearable thickness and are straightforward to fit.