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:
Sep. 20, 1977
Filed:
Apr. 23, 1976
Applicant:
Inventor:
Fred Kurt Rubin, Leonia, NJ (US);
Assignee:
Lever Brothers Company, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ; C02B / ;
U.S. Cl.
CPC ...
134-2 ; 134-3 ; 252 82 ; 252 86 ; 252 87 ; 252 / ; 252132 ; 252135 ; 252136 ;
Abstract
Manganese ion-derived discolorations are removed from hard surfaces by the use of either dihydroxy maleic acid, dihydroxy tartaric acid, their alkali metal salts, or mixtures thereof. The non-toxicity and non-corrosivity of the disclosed compounds make them particularly suitable for household applications.