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. 13, 1990
Filed:
Feb. 08, 1988
Applicant:
Inventors:
Murray J Sibley, Berkeley, CA (US);
Rebecca F Nite, Cupertino, CA (US);
Assignee:
Pilkington Visioncare Holdings, Inc., Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; C11D / ;
U.S. Cl.
CPC ...
134 42 ; 252 891 ; 252135 ; 252D / ;
Abstract
A composition is disclosed useful for cleaning hard and soft contact lenses, in which cleansing action is provided by a relatively soft abradant particulate sparingly soluble room temperature solid organic acid or inorganic salt, preferably in combination with one or more surfactants. The particulate material effectively removes deposits from the lens, and readily dissolves on the application of water.