Patents Assigned to Wakayama Seika Kogyo Co., Ltd.
  • Flexible container
    Patent number: 6352178
    Abstract: A flexible container excellent in durability and stability for storage and conveyance and capable to prevent the content in the flexible container from scattering.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: March 5, 2002
    Assignee: Wakayama Seika Kogyo Co., Ltd.
    Inventors: Yuji Kimoto, Akira Ono
  • Stable dispersible mineral acid slurry of benzidine derivatives
    Patent number: 5454973
    Abstract: Mineral acid slurries of benzidine derivatives having high stability are provided by incorporating into such slurries a polysaccharide.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: October 3, 1995
    Assignee: Wakayama Seika Kogyo Co., Ltd.
    Inventors: Fumio Koseki, Kenjiro Fujiki, Motonori Takeda, Katsutoshi Tao