Patents Assigned to Hagiwara Research Corporation
  • Antimicrobial polymer composition
    Patent number: 5939087
    Abstract: The present invention provides a novel antimicrobial polymer composition having superior weatherability and discoloration resistance to those of the prior art.The present invention provides an antimicrobial polymer composition comprising a thermosetting polymer and an antimicrobial composition having an antimicrobial coat of an aluminosilicate containing antimicrobial metal ions and an amount of thiabendazole.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: August 17, 1999
    Assignee: Hagiwara Research Corporation
    Inventor: Zenji Hagiwara
  • Antimicrobial polymer composition
    Patent number: 5827524
    Abstract: The present invention relates to a novel antimicrobial polymer composition comprising a novel crystalline antimicrobial composition. More particularly, the present invention relates to an antimicrobial polymer composition comprising a crystalline antimicrobial composition and a polymer, wherein said crystalline antimicrobial composition comprises a crystalline silicon dioxide containing silver ions and one or two optional metal ions selected from the group consisting of zinc and copper.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: October 27, 1998
    Assignees: Hagiwara Research Corporation, Japan Electronic Materials Corporation
    Inventors: Zenji Hagiwara, Kazuo Kishimoto, Hiroshi Yamazaki
  • Crystalline antimicrobial composition
    Patent number: 5753250
    Abstract: The present invention relates to a novel crystalline antimicrobial composition comprising silicon dioxide as a major component. More particularly, the present invention is concerned to said crystalline antimicrobial composition wherein said crystalline silicon dioxide contains silver ions and one or two optional metal ions selected from the group consisting of zinc and copper. Furthermore, the present invention relates to an antimicrobial ceramic composition comprising said antimicrobial composition.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: May 19, 1998
    Assignee: Hagiwara Research Corporation
    Inventor: Zenji Hagiwara
  • Antimicrobial polymer composition
    Patent number: 5698212
    Abstract: The present invention provides a novel antimicrobial polymer composition having superior weatherability and discoloration resistance to those of the prior art.The present invention provides an antimicrobial polymer composition comprising a polymer and an antimicrobial composition having an antimicrobial coat of an aluminosilicate on the surface of silica gel, wherein said aluminosilicate containing antimicrobial metal ions, characterized in that said antimicrobial polymer composition further comprises thiabendazole.
    Type: Grant
    Filed: March 12, 1996
    Date of Patent: December 16, 1997
    Assignees: Hagiwara Research Corporation, Japan Electronic Materials Corporation
    Inventor: Zenji Hagiwara