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:
Feb. 28, 1989
Filed:
May. 22, 1987
Applicant:
Inventors:
Doris Schafer, Arisdorf, CH;
Rolf Schafer, Arisdorf, CH;
Assignee:
Alcon Laboratories, Inc., Forth Worth, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; C11D / ;
U.S. Cl.
CPC ...
134 42 ; 252 891 ; 252173 ; 25217421 ; 252D / ;
Abstract
Nontoxic, aqueous, contact lens cleaning compositions containing a weakly anionic surfactant, and optionally also a chelating agent, urea and/or a source of hydrated protons, and methods of chemically removing protein, lipid and calcium deposits from contact lens utilizing these compositions are described.