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:
Jan. 25, 1994
Filed:
Apr. 08, 1992
Applicant:
Inventors:
Assignee:
Tomei Sangyo Kabushiki Kaisha, Nagoya, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61L / ; C11D / ; C11D / ; C12N / ;
U.S. Cl.
CPC ...
134 18 ; 134 30 ; 134 42 ; 252135 ; 252139 ; 252153 ; 252173 ; 25217412 ; 252523 ; 252D / ; 252D / ; 422 26 ; 422 28 ; 435188 ; 514839 ;
Abstract
A liquid composition for contact lenses, having from 5 to 40% (w/v) of glycerol and from 4 to 20% (w/v) of boric acid and/or a borate incorporated to a solution containing an effective amount of a protease, in such a ratio that the boric acid and/or the borate is from 10 to 100 parts, preferably 10-20 parts, by weight per 100 parts by weight of the glycerol.