Patents by Inventor Jiro Kumaki

Jiro Kumaki 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).

  • Ultra fine polymer particle, composite material thereof and methods of preparation thereof
    Patent number: 4977242
    Abstract: A cumulatable ultrafine polymer particle consisting of one molecular chain of the polymer is prepared by spreading a dilute solution of the polymer at the interface between the atmosphere and a subphase solution having a weak affinity for the polymer, and evaporating the spreading solvent or dissolving it into the subphase. A composite material comprising the polymer particles is produced by contacting the particles formed on the subphase solution with the surface of a substrate. The particles are cumulated on the substrate in a ratio of area occupied by the particles of at least 10%. The particles may be cumulated in multiple layers on the substrate.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: December 11, 1990
    Assignee: Research Development Corp. of Japan
    Inventor: Jiro Kumaki
  • Ultra fine polymer particle and composite material of preparation for methods
    Patent number: 4839463
    Abstract: A cumulatable ultrafine polymer particle consisting of one molecular chain of the polymer is prepared by spreading a dilute solution of the polymer at the interface between the atmosphere and a subphase solution having a weak affinity for the polymer, and evaporating the spreading solvent or dissolving it into the subphase. A composite material comprising the polymer particles is produced by contacting the particles formed on the subphase solution with the surface of a substrate. The particles are cumulated on the substrate in a ratio of area occupied by the particles of at least 10%. The particles may be cumulated in multiple layers on the substrate.
    Type: Grant
    Filed: March 19, 1986
    Date of Patent: June 13, 1989
    Assignee: Research Development Corporation of Japan
    Inventor: Jiro Kumaki