Patents by Inventor Kazuhiro Kunugihara

Kazuhiro Kunugihara 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).

  • BIAXIALLY ORIENTED POLYESTER FILM AND RELEASE FILM USING THE SAME
    Publication number: 20130011685
    Abstract: A biaxially oriented polyester film which is facilitated in the detection of defects by optical inspection and minimizes the amount of oligomers deposited on a surface of the film. This film is useful for liquid crystal displays as well as a release film.
    Type: Application
    Filed: August 23, 2012
    Publication date: January 10, 2013
    Applicant: MITSUBISHI PLASTICS, INC.
    Inventor: Kazuhiro KUNUGIHARA
  • Biaxially oriented laminated polyester film
    Patent number: 7223467
    Abstract: A biaxially oriented laminated polyester film which is a co-extruded laminated polyester film comprising at least three polyester layers with the intermediate layer containing a dye which is substantially dissolved in polyesters, said film having on one side thereof a resin layer containing metal-added metal oxide particles or metal oxide particles. This film is capable of preventing precipitation of the dye on the film surface, excels in heat insulation and aesthetic effect in use, and is suited for application to windows.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: May 29, 2007
    Assignee: Mitsubishi Polyester Film Corporation
    Inventor: Kazuhiro Kunugihara
  • Biaxially oriented laminated polyester film
    Publication number: 20060154094
    Abstract: A biaxially oriented laminated polyester film which is a co-extruded laminated polyester film comprising at least three polyester layers with the intermediate layer containing a dye which is substantially dissolved in polyesters, said film having on one side thereof a resin layer containing metal-added metal oxide particles or metal oxide particles. This film is capable of preventing precipitation of the dye on the film surface, excels in heat insulation and aesthetic effect in use, and is suited for application to windows.
    Type: Application
    Filed: September 22, 2003
    Publication date: July 13, 2006
    Applicant: Mitsubishi Polyester Film Corporation
    Inventor: Kazuhiro Kunugihara
  • Poly(ethylene 2,6-naphthalate) film
    Patent number: 5376711
    Abstract: A poly(ethylene 2,6-naphthalate) film obtained by stretching a poly(ethylene 2,6-naphthalate) sheet containing cross-linked polymer particles which have at least one ethylene glycol unit and have an average particle size of from 0.05 to 3 .mu.m and a spherical ratio of from 1.0 to 1.1, wherein a deformation ratio of the cross-linked polymer particles in the stretching is from 1.2 to 3.0, has excellent runnability, abrasive resistance and strength.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: December 27, 1994
    Assignee: Diafoil Hoechst Company, Limited
    Inventors: Masahiko Fujimoto, Kazuhiro Kunugihara
  • Polyester compositions and process of preparing polyester films from them
    Patent number: 4727108
    Abstract: Disclosed herein is a polyester composition comprising 0.001-5% by weight of particles which have an average particle size of 0.05-5 micrometers, are mainly composed of calcium carbonate and contain 0.001-5% by weight of at least one compound selected from the group consisting of magnesium compounds, strontium compounds and barium compounds.Also disclosed herein is a process for preparing a polyester film by the electrostatic cooling method, which process is characterized by using the polyester composition of the present invention.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: February 23, 1988
    Assignee: Diafoil Company, Limited
    Inventors: Takashi Kagiyama, Kazuo Endo, Chikakazu Kawaguchi, Yosio Meguro, Kazuhiro Kunugihara