Patents Assigned to Mitsui Plastics, Inc.
  • Water-soluble balloon
    Patent number: 5387147
    Abstract: A balloon is formed from a water-soluble film which mainly comprises a polyvinyl alcohol. Coloring agents as food additives are used for pigmenting the balloon. The balloon per se is soluble in water upon coming in contact with water and accordingly, it never becomes a cause of environmental pollution. The coloring agents used are those for use in foods and thus they do not become a cause of environmental pollution.
    Type: Grant
    Filed: May 19, 1993
    Date of Patent: February 7, 1995
    Assignees: Mitsui Co., Ltd., Mitsui Plastics, Inc., Aicello Chemical Co., Ltd.
    Inventors: Masatake Ohshima, Yasuhiro Ohsone, Masanori Satoh