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:
Aug. 20, 1985
Filed:
Feb. 22, 1984
Applicant:
Inventors:
Drahoslav Lim, San Diego, CA (US);
Chidambar L Kulkarni, San Diego, CA (US);
Dennis A Repella, San Diego, CA (US);
Assignee:
Barnes-Hind, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; G03B / ;
U.S. Cl.
CPC ...
526264 ; 3511 / ; 3511 / ; 523106 ; 523108 ; 526258 ;
Abstract
An interpenetrating network polymer is obtained by mixing hydrophilic monomer vinyl pyrrolidone and hydrophobic monomer (5-alkylene-m-dioxanyl) acrylic ester in the presence of at least two crosslinking agents and, optionally, hydroxyalkyl acrylic ester and catalysts and causing polymerization to occur. Contact lenses made from the polymer have high tensile strength and can absorb a high degree of water.
Lim, Drahoslav. (1985). Hydrophilic polymers and contact lenses made therefrom (U.S. Patent No. 4536554). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4536554
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile