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. 29, 1992
Filed:
Mar. 26, 1991
Applicant:
Inventors:
Gregorius J Huijben, Vlaardingen, NL;
Cornelis G van Kralingen, Nieuwerkerk a/d/ IJssel, NL;
Seeng D Liem, Rhoon, NL;
Michele E Paoli, Vlaardingen, NL;
Assignee:
Lever Brothers Company, Division of Conopco, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D / ;
U.S. Cl.
CPC ...
25217414 ; 252174 ; 25217425 ; 252540 ;
Abstract
Detergent powders built with sodium carbonate and having improved flow properties are prepared by a process in which a selected acid, for example, succinic acid or alkylbenzene sulphonic acid, is added to a slurry in order to transform sodium carbonate into needle-like crystals of sodium sedquicarbonate, and the slurry is then dried, preferably spray-dried, to form a powder.