Patents by Inventor Shigenobu Hamano

Shigenobu Hamano 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).

  • Apparatus for filtering volume-reduced gel-state polystyrene resin
    Patent number: 7767173
    Abstract: The invention provides a filtration apparatus for volume-reduced gel-state polystyrene resin which can remove foreign matter contained in volume-reduced gel-state polystyrene resin by continuously and effectively filtering the volume-reduced gel-state polystyrene resin.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: August 3, 2010
    Assignees: Meishin Kogyo Kabushikigaisha
    Inventors: Shigenobu Hamano, Noriomi Hayashi
  • Apparatus for treating volume-reduced polystyrene resin in gel state for material separation and recovery
    Patent number: 7666368
    Abstract: The invention provides an apparatus for continuously and efficiently treating volume-reduced polystyrene resin in gel state, thereby removing solvent and recovering resin. A volume-reduced gel-state polystyrene resin is heated in the separation/recovery apparatus under ambient pressure or reduced pressure, for removal of solvent and recovery of resin.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: February 23, 2010
    Assignees: Meishin Kogyo Kabushikigaisha
    Inventors: Shigenobu Hamano, Noriomi Hayashi
  • Solvent for treating polystyrene resin and method of treating polystyrene resin with the same
    Patent number: 7365151
    Abstract: A solvent for polystyrene resin treatment is used for reducing the volume of a polystyrene resin by contacting it with the solvent; and a method of treating polystyrene resins. The solvent is characterized by comprising 20 to 70 wt. % of diethylene glycol dimethyl ether and 30 to 80 wt. % of C9-13 aliphatic hydrocarbon. The method employs the solvent.
    Type: Grant
    Filed: November 29, 2002
    Date of Patent: April 29, 2008
    Inventor: Shigenobu Hamano
  • Apparatus for filtering volume-reduced gel-state polystyrene resin
    Publication number: 20070119313
    Abstract: The invention provides a filtration apparatus for volume-reduced gel-state polystyrene resin which can remove foreign matter contained in volume-reduced gel-state polystyrene resin by continuously and effectively filtering the volume-reduced gel-state polystyrene resin.
    Type: Application
    Filed: April 9, 2004
    Publication date: May 31, 2007
    Inventors: Shigenobu Hamano, Noriomi Hayashi
  • Apparatus for the separation and recovery of volume-reduced polystyrene resin gel
    Publication number: 20060148913
    Abstract: The invention provides an apparatus for continuously and efficiently treating volume-reduced polystyrene resin in gel state, thereby removing solvent and recovering resin. A volume-reduced gel-state polystyrene resin is heated in the separation/recovery apparatus under ambient pressure or reduced pressure, for removal of solvent and recovery of resin.
    Type: Application
    Filed: September 26, 2003
    Publication date: July 6, 2006
    Applicants: Shigenobu Hamano, MEISHIN KOGYO KABUSHIKIGAISHA
    Inventors: Shigenobu Hamano, Noriomi Hayashi
  • Solvent for treating polystyrene resin and method of treating polystyrene resin with the same
    Publication number: 20050215651
    Abstract: A solvent for polystyrene resin treatment is used for reducing the volume of a polystyrene resin by contacting it with the solvent; and a method of treating polystyrene resins. The solvent is characterized by comprising 20 to 70 wt. % of diethylene glycol dimethyl ether and 30 to 80 wt. % of C9-13 aliphatic hydrocarbon. The method employs the solvent.
    Type: Application
    Filed: November 29, 2002
    Publication date: September 29, 2005
    Inventor: Shigenobu Hamano
  • Solvent for treating polystyrene resin and method of treating polystyrene resin with the same
    Publication number: 20050056813
    Abstract: A solvent for polystyrene resin treatment which is for use in contracting a polystyrene resin by contact therewith and is excellent in treatment rate, stickiness and sedimentation of the substance being treated, etc.; and a method of treating a polystyrene resin with the solvent. The solvent for polystyrene resin treatment, which is a liquid medium for bringing a polystyrene into a jelly- or gel-state and thereby reducing the volume, comprises an aliphatic hydrocarbon and a solvent in which polystyrene resins are soluble, and is characterized in that the mixing proportion of the aliphatic hydrocarbon is 37.5±2.5 wt % based on the liquid medium.
    Type: Application
    Filed: December 3, 2002
    Publication date: March 17, 2005
    Inventor: Shigenobu Hamano