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# c12) United States Patent 

# Binder 

# (54) DETERGENT TABLET 

(75) Inventor: Christopher James Binder, North Shields (GB) 

(73) Assignee: The Procter & Gamble Company, Cincinnati, OH (US) 

( *) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 490 days. 

(21) Appl. No.: 10/204,877 

(22) PCT Filed: Feb. 20, 2001 

(86) PCT No.: PCT /US0l/05396 § 371 (c)(l), (2), ( 4) Date: Aug. 23, 2002 

(87) PCT Pub. No.: WO0l/62886 PCT Pub. Date: Aug. 30, 2001 

## (65) Prior Publication Data 

US 2003/0032568 Al Feb. 13, 2003 

## (30) Foreign Application Priority Data 

Feb. 23, 2001 (GB) ................................. 0004130.1 

(51) Int. Cl. CllD 17100 (2006.01) CllD 3/06 (2006.01) 

(52) U.S. Cl. ....................... 510/226; 510/224; 510/220 

( 58) Field of Classification Search ... ... ... ... .. .. 510/114, 510/191,224,220,226 See application file for complete search history. 

<img src='content_image/929781.jpg'>

# (IO) Patent No.: US 7,153,817 B2 

# Dec. 26, 2006 (45) Date of Patent: 

## (56) References Cited 

<img src='content_image/929770.jpg'>

## FOREIGN PATENT DOCUMENTS 

<img src='content_image/929772.jpg'>

* cited by examiner 

Primary Examiner-Yogendra N. Gupta 

Assistant Examiner-Preeti Kumar 

(74) Attorney, Agent, or Firm-Armina E. Matthews; Ian S. Robinson; Laura R. Grunzinger 

## (57) ABSTRACT 

A machine cleaner tablet comprising from about 10 to about 7 5% of a limescale remover acid, from about 1 to about 20% oflow foaming non-ionic surfactant, from about 0.5 to about 5% of a detergency enzyme and wherein the tablet has a pH measured as a 1 % solution in distilled water at 20° C. in the range from about 1 to about 5. The tablet is used for cleaning the interior of automatic dishwashers, food processing machines and the like. 

US007153817B2 

## U.S. PATENT DOCUMENTS 

## 15 Claims, No Drawings 

