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:
Jul. 18, 1995
Filed:
Sep. 11, 1992
Applicant:
Inventors:
Ashok R Thakrar, San Jose, CA (US);
Khushroo Gandhi, Sunnyvale, CA (US);
Assignee:
Pilkington Barnes Hind, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-17 ; 264-18 ; 264-27 ;
Abstract
Methods of manufacturing a contact lens form a mold which has a first section formed from a first material and a second section formed from a second material. The methods permit the facile preparation of contact lenses having two or more differing materials, for example, a composite lens, a bifocal lens, a trifocal lens and the like.