Patents Assigned to Mix Co., LTD
  • Washing process and washing unit
    Patent number: 6461446
    Abstract: Washing items are washed simultaneously with softening washing water comprising alkali metal ion and at least one of carbonate ion and bicarbonate ion. The washing water before being softened is obtained by electrolyzing an aqueous solution of sodium hydrogencarbonate having a pH of 9.5 or more and an electric conductivity of 150 mS/m or more. The softened washing water has a total hardness of 40 ppm or less.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: October 8, 2002
    Assignee: Mix Co., LTD
    Inventors: Fumitake Satoh, Kazuyoshi Arai, Kazuhiro Miyamae, Tomoyuki Yanagihara, Tatsuya Naitoh, Tomoki Seo