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:
Sep. 07, 1999
Filed:
Sep. 06, 1996
Yoshitake Sumida, Souraku-gun, JP;
Tetsuo Moriyama, Kitakatsuragi-gun, JP;
Yoko Fukushima, Takatsuki, JP;
Takeo Abe, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
When tableware is washed and rinsed in a dishwasher using a plurality of washing steps, the tableware is washed within 10 minutes using acid ionized water having a pH value of at most 6.0 and a temperature of at least 40.degree. C. in a first washing step, whereby dirt is made to form cohesion and is prevented from being reattached to the tableware, so that a washing load in the following washing steps is reduced. Furthermore, the tableware is washed for at least 15 minutes with alkaline ionized water having a pH value of at least 8.5 and a temperature of at least 55.degree. C. in at least one of the washing steps, whereby the washing effects on fats and oils, protein and starch are improved. In addition, while the two kinds of ionized water mentioned above are being produced simultaneously, one ionized water produced is supplied to a washing vessel for use in the present washing and the other ionized water produced is supplied to and stored in a water tank for use in the next washing, so that provision of two or more water tanks is not necessary, resulting in reduction in size of dishwashers and in manufacturing cost thereof. Moreover, two kinds of ionized water produced simultaneously are used as washing water without being discarded before use, so that water saving can be achieved.