Patents by Inventor Yoshinao Shinohara

Yoshinao Shinohara 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).

  • Pipe made of polyethylene resin
    Patent number: 6204349
    Abstract: A pipe made of a polyethylene resin which is a linear polyethylene having the following physical properties (1) to (4): (1) a melt flow rate of 0.02 to 0.2 g/10 min, (2) a flow ratio of 50 or more, (3) a density of 0.945 to 0.960 g/cm3, and (4) a relaxation parameter H, represented by the following equation (I), of 2.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: March 20, 2001
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoshinao Shinohara, Yasuhisa Mizuno, Eiji Tanaka, Yasuhiro Kashiwagi, Miki Suzaki, Koshi Yokoyama
  • Extensible film or sheet and process for producing the same
    Patent number: 5110870
    Abstract: This invention provides an extensible film or sheet comprising 100 to 60 parts by weight of an ethylene copolymer having a density of less than 0.910 g/cm.sup.3 and 0 to 40 parts by weight of a linear polyethylene having a density of 0.910 to 0.945 g/cm.sup.3, specified by the following properties:1) film blocking as expressed by 180.degree. peel strength is 60 g/25 mm or less;2) tensile elongation is 750% or more;3) Elmendorf tear strength is 30 kg.cm/cm.sup.2 or more; and4) 1% secant modulus is 20 to 2,000 kg/cm.sup.2.The film or sheet of this invention has excellent extensibility and is free from blocking. It is also excellent in flexibility and hand and drape and can be preferably used as a film for gather of disposable diapers, etc., packing sheet for disposable diapers, and the like.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: May 5, 1992
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Toshio Fujii, Yoshinao Shinohara, Keishin Handa
  • Linear polyethylene film and process for producing the same
    Patent number: 5091228
    Abstract: Disclosed herein is a monoaxially or biaxially stretched film comprising principally of a linear polyethylene and capable of reduction of thickness to a greater extent than possible with the conventional films of this type.The film according to the present invention, though incomparably small in thickness, has excellent impact strength, stiffness, tensile strength and tear strength and can be favorably utilized as a film for packaging bags used for packaging relatively heavy commodities.
    Type: Grant
    Filed: June 25, 1991
    Date of Patent: February 25, 1992
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Toshio Fujii, Kazuhiro Kato, Akihiko Sakai, Yoshinao Shinohara
  • Polypropylene resin composition and biaxially stretched film thereof
    Patent number: 4705828
    Abstract: Disclosed herein are a polypropylene resin composition comprising 100 parts by weight of propylene homopolymer showing a stereoregularity of a boiling heptane-insoluble part thereof of not less than 0.960 as an isotactic pentad rate obtained by .sup.13 C-NMR and 0.01 to 2 parts by weight of a hydrocarbon polymer having completely or partially saturated main hydrocarbon chain and at least one hydroxy group at an end of the main hydrocarbon chain, and a biaxially stretched film comprising the polypropylene resin composition.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: November 10, 1987
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Yoshio Matsumoto, Toshio Fujii, Yoshinao Shinohara, Kiyoshi Fukuda