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:
Aug. 29, 1989
Filed:
Jun. 26, 1987
Roy I Kaplan, Naperville, IL (US);
Nalco Chemical Company, Naperville, IL (US);
Abstract
A composition suitable for cleaning and preventing the staining of toilet bowls is provided herein. This composition is made of low molecular weight water-soluble polyacrylate, a low molecular weight copolymer preferably a copolymer of an acrylamide and acrylic acid, and a binder. The composition may also optionally contain an inorganic salt, a surfactant, a dye and perfume. The composition is preferably in the form of a cake or pellet and added to the tank of a toilet so that the cleaning and stain-inhibiting ingredients are released into the toilet bowl upon each flush of the toilet. The invention also includes a method of cleaning and preventing the staining of a toilet bowl by the use of such composition.