Patents Assigned to Seiken Kagaku Co., Ltd.
  • Package packed with volatile substance
    Patent number: 5458244
    Abstract: An inner bag made of an acrylonitrile-type thermoplastic resin film and having a volatile substance hermetically sealed therein is packed and sealed in an outer bag made of a gas-permeable film to provide a package packed with the volatile substance, which can keep the volatile substance from escaping therefrom during storage thereof, but permits the volatile substance to escape therefrom in service.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: October 17, 1995
    Assignee: Seiken Kagaku Co., Ltd.
    Inventor: Shoichi Emori