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:
May. 10, 1994
Filed:
Dec. 02, 1992
Applicant:
Inventors:
Maylee H Chou, Lexington, MA (US);
Edward J Ellis, Lynnfield, MA (US);
Assignee:
Polymer Technology Corporation, Wilmington, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
134-6 ; 134-7 ; 134 42 ; 252545 ; 252 891 ; 252155 ; 252173 ; 25217417 ; 25217418 ; 25217423 ; 25217425 ; 252550 ; 252551 ; 252D / ;
Abstract
A hard contact lens formed of a polymer having silicon and chlorine incorporated therein is exposed to a solution containing an admixture, an alkylphenyl polyether alcohol surfactant, a second surfactant which is anionic and a third surfactant having a preservative action and the solution is rubbed against the contact lens to remove surface deposits thereon.