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. 15, 1998
Filed:
Sep. 29, 1995
Applicant:
Inventors:
James Jen, Jacksonville, FL (US);
Michael Widman, Jacksonville, FL (US);
Mehmet Burduroglu, Yenikoy, Istanbul, TR;
Assignee:
Johnson & Johnson Vision Products, Inc., Jacksonville, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-23 ; 264-25 ; 264138 ; 264338 ;
Abstract
Improved homogeneity and uniformity of surface energy characteristics in a mold surface for hydrophilic contact lens production is achieved with the temporal application of a surface active agent such as Tween 80, to facilitate wetting of the optical surface of the mold, especially the convex mold, with the reactive monomer mix.