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. 11, 1983
Filed:
May. 05, 1981
Bernard Feurer, Saint Orens de Gameville, FR;
Philippe Baronet, Toulouse, FR;
Alcon Pharmaceuticals Limited, Cham, CH;
Abstract
A process for rendering contact lenses made of a polymer or mixture of polymers hydrophilic or increasing their hydrophilic nature comprising generating a beam of positive ions which are essentially of equal kinetic energy, bombarding in an essentially uniform manner the surface of each lens by means of this beam and thereafter hydrating each contact lens; the positive ion beam is obtained by subjecting a gas from the group consisting of nitrogen, oxygen or compounds of these to an electric field produced between a cathode and an anode and in causing part of the accelerated positive ions to pass through the cathode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile