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. 23, 1993
Filed:
Oct. 10, 1991
Applicant:
Inventor:
Tiang-Shing Chang, Westfield, NJ (US);
Assignee:
Block Drug Company, Jersey City, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
252174 ; 252 90 ; 25217417 ; 25217422 ; 252175 ; 252D / ; 252D / ; 252106 ; 4222 ; 42271 ; 42275 ; 134 42 ; 210698 ;
Abstract
A surface erodible controlled releasing, free standing cleaning block for domestic water closets comprises controlled releasing agent, erosion rate modifier, processing aid, acidic chelating agent, color indicator, density modifier and internal lubricant.