Patents by Inventor Hirotomo Iwasaki

Hirotomo Iwasaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5908590
    Abstract: The present invention provides a process and apparatus for readily and continuously producing foamed resin containers with labels by following a process sequence including the steps of supplying a sheet which bears label bodies printed in predetermined positions thereon, positioning a label body, punching the label body, and molding a foamed resin container with the label properly positioned. The invention further provides a process which allows for precise positioning of a label. Therefore, a thin and less stiff synthetic resin sheet can be employed for the label instead of a paper base. In addition, the label can be applied in a predetermined position on the foamed resin container without preliminarily rolling the label into a predetermined tubular shape.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: June 1, 1999
    Assignees: Sekisui Plastics Co., Ltd., Nissin Food Products Co., Ltd.
    Inventors: Toru Yoshimi, Hiroshi Hasegawa, Yasuhiro Ono, Akio Tsujita, Hirotomo Iwasaki, Masaru Chiba
  • Patent number: 5240966
    Abstract: A granular colorant for coloring thermoplastic resins such as polypropylene, composed of dye/pigment-containing porous thermoplastic resin grains, which is characterized that a dye/pigment composition containing a dispersing agent and/or a carrier resin having a lower softening point than the porous thermoplastic resin grains and dye/pigment is filled in and/or adhered on the pores and/or surfaces of the porous thermoplastic resin grains, is disclosed. The granular colorant is hardly deteriorated by heat and has excellent handlability, meterability, dispersibility and dilutability.
    Type: Grant
    Filed: September 19, 1991
    Date of Patent: August 31, 1993
    Assignees: Dainippon Ink and Chemicals, Inc., Himont Incorporated
    Inventors: Hirotomo Iwasaki, Isao Kitajima, Giampaolo Barbi, Enrico Constantini