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:
May. 14, 2002
Filed:
May. 12, 2000
Anja Leonarda M Van Asperen, Vlaardingen, NL;
Atze Jan Van der Goot, Wageningen, NL;
Rene Lammers, Bangkok, TH;
Seeng Djiang Liem, Vlaardingen, NL;
Robert Ernst Niemantsverdriet, Vlaardingen, NL;
Mark Van der Veen, Wageningen, NL;
Patrick Van der Waal, Vlaardingen, NL;
Unilever Home & Personal Care USA division of Conopco, Inc., Greenwich, CT (US);
Abstract
A detergent tablet for fabric washing is compacted from a particulate composition containing detergent active compound, detergency builder, a bleach system comprising coated sodium percarbonate and at least one bleach activator, and optionally other detergent ingredients, where the tablet comprises a plurality of discrete regions, and wherein the bleach activator and the coated sodium percarbonate are concentrated in respective different regions of the tablet. This separation of activator and percarbonate increases the stability of the bleach activator.