Signal-based electrochemical methods for automatic dishwashing

• US 20030213503A1
• Filed: 08/16/2002
• Published: 11/20/2003
• Est. Priority Date: 05/17/2002
• Status: Abandoned Application

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Price, Kenneth Nathan, Scheper, William Michael, Tremblay, Mario Elmen, Drzewiecki, Paul Joseph
• Application Number:
  US10/222,643
• Publication Number:
  US 20030213503A1
• Time in Patent Office: Days
• US Class Current: 134/18
• CPC Class Codes: A47L 15/0015 other treatment phases, e.g. steam or sterilizing phase
• CPC Class Codes: A47L 15/4208 Arrangements to prevent clogging of the filters, e.g. self-cleaning
• CPC Class Codes: A47L 15/4238 by using electrolytic cells
• CPC Class Codes: A47L 15/4291 Recovery arrangements, e.g. for the recovery of energy or water
• CPC Class Codes: A47L 15/4445 Detachable devices
• CPC Class Codes: A47L 2601/06 Electrolysed water
• CPC Class Codes: A61L 2/035 Electrolysis
• CPC Class Codes: C11D 17/003 Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
• CPC Class Codes: C11D 2111/14 Hard surfaces
• CPC Class Codes: C11D 2111/44 Multi-step processes
• CPC Class Codes: C11D 2111/46 applying energy, e.g. irradiation
• CPC Class Codes: C11D 3/046 Salts
• CPC Class Codes: C11D 3/386 Preparations containing enzymes , e.g. protease or amylase
• CPC Class Codes: C11D 3/3953 Inorganic bleaching agents C11D3/3951 takes precedence
• CPC Class Codes: C11D 3/3956 Liquid compositions
• CPC Class Codes: D06F 2103/20 Washing liquid condition, e.g. turbidity
• CPC Class Codes: D06F 2105/58 Indications or alarms to the control system or to the user
• CPC Class Codes: D06F 34/05 for wireless communication between components, e.g. for remote monitoring or control
• CPC Class Codes: D06F 35/003 using electrochemical cells

Abstract

Methods of improving tableware cleaning, sanitizing and stain removal using an automatic dishwashing appliance containing an electrochemical cell and/or electrolytic device. The methods comprise steps for generating electrolyzed water by intermittently activating and/or intermittently deactivating the cell so as to sequentially provide a bleaching species at specific times during the wash and/or rinse cycle. Said methods include a signal-sensing system capable of detecting a composition comprising a signal-providing agent, methods of using said compositions, and articles of manufacture.

Claims