Patents by Inventor Kazuyuki Hada

Kazuyuki Hada 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).

  • Porous polyolefin film, process for producing same, and use thereof
    Patent number: 6767622
    Abstract: The present invention provides a porous polyolefin film abounding in air permeability and moisture permeability and having extremely high degree of light transmission and tear strength, a process for producing same and intended use thereof. This porous polyolefin film is produced, for example, by stretching an unstretched polyolefin film having a resin composition of 100 parts by weight of polyolefin, 50-150 parts by weight of an inorganic filler having a 50% median diameter of at least 2 &mgr;m but less than 7 &mgr;m measured according to the light-scattering method, and 2-20 parts by weight of a wax of polyolefin series in at least uniaxial direction at an area magnification of 1.1-1.5 times, and possesses physical properties of a water vapor transmission rate of at least 1000 g/m2·24 hrs., a light transmission of at least 65%, and a tear strength of at least 0.6 N.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: July 27, 2004
    Assignee: Tokuyama Corporation
    Inventors: Kazuyuki Hada, Yoshinori Takahashi
  • Porous polyolefin film, process for producing same, and use thereof
    Publication number: 20030100650
    Abstract: The present invention provides a porous polyolefin film abounding in air permeability and moisture permeability and having extremely high degree of light transmission and tear strength, a process for producing same and intended use thereof. This porous polyolefin film is produced, for example, by stretching an unstretched polyolefin film having a resin composition of 100 parts by weight of polyolefin, 50-150 parts by weight of an inorganic filler having a 50% median diameter of at least 2 &mgr;m but less than 7 &mgr;m measured according to the light-scattering method, and 2-20 parts by weight of a wax of polyolefin series in at least uniaxial direction at an area magnification of 1.1-1.5 times, and possesses physical properties of a water vapor transmission rate of at least 1000 g/m2·24 hrs., a light transmission of at least 65%, and a tear strength of at least 0.6 N.
    Type: Application
    Filed: October 31, 2001
    Publication date: May 29, 2003
    Inventors: Kazuyuki Hada, Yoshinori Takahashi
  • Printing cylinder
    Patent number: 5216953
    Abstract: A printing cylinder is disclosed which makes it possible to remove the ink adhering to the side surfaces of the printing cylinder after the printing has been finished without the need of moving the printing cylinder.
    Type: Grant
    Filed: June 9, 1992
    Date of Patent: June 8, 1993
    Assignee: Tokuyama Soda Kabushiki Kaisha
    Inventor: Kazuyuki Hada