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. 09, 1982
Filed:
Jun. 13, 1980
Applicant:
Inventor:
Peter C Knight, South Wirral, GB;
Assignee:
Lever Brothers Company, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
264 13 ;
Abstract
The friability of spray-dried detergent powder containing a relatively high level of anionic surfactant and a relatively low level of inorganic material is reduced by the use of hydrated starch. The preferred amount of hydrated starch is from 1 to 5% and the invention is particularly applicable to powders containing 5% or more of sodium silicate, 20-30% by weight of detergent active compound and an amount of phosphate builder compound of less than about 7% by weight of the spray-dried powder, calculated as phosphorus.