Patents Assigned to Yoshimasa Yokoyama
  • Patent number: 6190756
    Abstract: This invention relates to a connected hollow structure and a packaging member suitable for use as a cushioning material, a protection frame material, a core material of a hollow panel and a carrier for carrying adsorbents. A connected hollow structure comprises a large number of hollow structures 10 having an arbitrary sectional shape and connected in parallel to each other. The connected hollow structure is formed from a piece of sheet and takes the shape resembling a unicursal figure in section. It is possible to form a connected hollow structure which shows elasticity and withstanding strength fit for the purpose and also has a smaller apparent specific gravity by properly selecting the quality of a sheet a, and the sectional shape and size of the hollow structures 10.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: February 20, 2001
    Assignees: Hitachi Zosen Corporation, Yokoyama Sankoh Co., LTD, Yoshimasa Yokoyama
    Inventors: Yoshimasa Yokoyama, Masahiro Yamamoto
  • Patent number: 5030510
    Abstract: A packaging material for packing boxes, packing bags and wrapping paper characterized in that a surface of the packaging material is coated with an air pervious tight coating. The coating partially or entirely covers the surface intended for contact with the wrapped contents, and contains grains or minute particles of a freshness preservative substance which is a far-infrared radioactive substance emitting radiation of a wave length of about 3-4 .mu.m at room temperature, a gas adsorptive substance, a substance reactive with oxygen at room temperature or a mixture thereof.Also disclosed is a method of fixing the freshness preservative substance on a packaging material characterized by printing, coating or spraying a coating onto a surface of the packaging material that is to be contacted with the wrapped contents.
    Type: Grant
    Filed: April 18, 1989
    Date of Patent: July 9, 1991
    Assignees: Nippon Danbohru Co., Ltd., Yoshimasa Yokoyama
    Inventors: Yoshimasa Yokoyama, Mikio Hanioka