Patents Assigned to Kaiho Co., Ltd.
  • Patent number: 5409714
    Abstract: An antimicrobial agent contains a calcined product of a calcium oxide type prepared by calcining shells of an oyster and/or a calcined product of a calcium hydroxide type as a hydrate of the calcined product of the calcium oxide type.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: April 25, 1995
    Assignee: Kaiho Co., Ltd.
    Inventor: Ichiro Ishijima