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. 24, 1994
Filed:
Oct. 20, 1992
Applicant:
Inventor:
Akira Nakagawa, Nagoya, JP;
Assignee:
Tomei Sangyo Kabushiki Kaisha, Nagoya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D06M / ; C02F / ; C11D / ;
U.S. Cl.
CPC ...
435264 ; 25217412 ; 252 80 ; 252 82 ;
Abstract
A method for cleaning a contact lens, which comprises diluting an enzyme-containing aqueous solution containing an effective amount of serine protease and from 30 to 95% by weight of glycerol with a diluting solution containing from 0.05 to 5% by weight of an anionic surfactant having no polyoxyethylene glycol unit and from 0.005 to 0.1% by weight of ethylenediamine tetraacetate to a glycerol concentration of not higher than 5% by weight, to obtain a treating solution, and immersing a contact lens in the treating solution.