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:
Dec. 02, 1986
Filed:
Jan. 23, 1986
Applicant:
Inventor:
Otto Wichterle, Prague, CS;
Assignee:
Ceskoslovenska Akademi Ved, Prague, CS;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-21 ; 264311 ; 425434 ; 425808 ;
Abstract
The invention pertains to a method for producing contact lenses by centrifugal casting in molds inserted as a vertical row into a rotating polymerization column. According to this method of production, objects of cylindric shape, corresponding to the casting molds by the diameter and height, are inserted between the casting molds, whereas the ratio of weight to volume of these objects is larger than 3.