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:
Oct. 19, 1993
Filed:
Apr. 20, 1992
Marcellus G Dusamos, Maarssen, NL;
Stefan E Frick, Maarssen, NL;
Wilhelmus K Van der Kinderen, Wilnis, NL;
Wijnand Ploeg, Maarssen, NL;
Unilever Patent Holdings B.V., Vlaardingen, NL;
Abstract
Washing process in an industrial washing machine, whereby a property of the wash liquor is measured which is dependent on the concentration of detergent product therein, and detergent product is added to the wash liquor, dependent on the property, characterized in that the wash cycle comprises a first period (t.sub.1) in which product is added during a fixed time period to obtain a high concentration in the wash liquor or until the measured property reaches a high set point where it is maintained by gradually adding detergent product, and a second period (t.sub.2) in which the property is kept at a low set point. There is also provided a device for controlling the dosing of detergent product to the process.