Patents by Inventor Takatoshi Yosomiya

Takatoshi Yosomiya 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).

  • Publication number: 20130070183
    Abstract: Disclosed is an optical film excellent in optical characteristics and UV absorbability and excellent in outward appearance in which the UV absorbent does not bleed out. The optical film is formed of a polypropylene resin mixture containing (A) a polypropylene resin containing a propylene polymer, (B) a 2-(hydroxyphenyl)benzotriazole derivative 1, and (C) a 2-(hydroxyphenyl)benzotriazole derivative 2, wherein the 2-(hydroxyphenyl)benzotriazole derivative 2 (C) is 2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-5-chlorobenzotriazole, and the content ratio of (C) to the total amount of (B) and (C) is from 8 to 60% by mass.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 21, 2013
    Inventors: Kazuaki WATANABE, Takatoshi Yosomiya
  • Publication number: 20120114873
    Abstract: The present invention provides an optical film having a high transparency and an excellent adhesion property to polarizers. The process for producing an optical film according to the present invention includes a step (1) of subjecting at least one surface of a polypropylene resin base film to physical surface treatment; and a step (2) of applying a hydrophilic resin composition onto the physically treated surface of the polypropylene resin base film.
    Type: Application
    Filed: October 5, 2011
    Publication date: May 10, 2012
    Inventors: Takatoshi Yosomiya, Kazuaki Watanabe
  • Publication number: 20110268978
    Abstract: The optical film for protecting a polarizer of the present invention contains a mixture containing a polypropylene resin containing a propylene copolymer, and 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol. An optical film for protecting a polarizer is provided that has an ultraviolet ray absorbing function and is excellent in optical characteristics.
    Type: Application
    Filed: November 25, 2009
    Publication date: November 3, 2011
    Inventors: Kazuaki Watanabe, Takatoshi Yosomiya
  • Publication number: 20110229730
    Abstract: An optical film for protecting a polarizer is provided that is excellent in mass productivity and is capable being imparted with characteristics by application while maintaining optical characteristics and moisture resistance of polypropylene polymerized with a metallocene catalyst. A polarizer film and an image display device using the same are also provided that have high performance. The optical film for protecting a polarizer of the present invention contains a mixed resin containing polypropylene that is polymerized with a metallocene catalyst, and graft-modified polypropylene.
    Type: Application
    Filed: September 29, 2009
    Publication date: September 22, 2011
    Inventors: Takatoshi Yosomiya, Kazuaki Watanabe
  • Publication number: 20100209630
    Abstract: Such an optical film is provided that has excellent optical characteristics, such as small haze, excellent transparency, high visible light transmittance and low birefringence, is excellent in water vapor transmission rate, and has excellent ultraviolet ray absorbing capability, and a polarizer film using the optical film and an image display device using the polarizer film are provided. The optical film for a protective film for a polarizer, contains a polypropylene resin mixture containing, as a major component, a polypropylene resin synthesized with a metallocene catalyst, having a benzotriazole compound added thereto, and a content of the benzotriazole compound is from 0.08 to 5.5% by mass based on the polypropylene resin mixture. The polarizer film has the optical film provided on at least one surface of a polarizer, and the image display device contains the polarizer film.
    Type: Application
    Filed: October 16, 2008
    Publication date: August 19, 2010
    Inventors: Kazuaki Watanabe, Takatoshi Yosomiya
  • Publication number: 20100062189
    Abstract: Provided are an optical film for a protection film for polarizer, excellent in optical properties such as small haze, excellent transparency and small birefringence, having good mechanical strength and heat resistance, and excellent in water vapor transmission rate; a polarizing film having the film as a protection film on one or both surfaces of a polarizer; and an image display device comprising the polarizing film. The optical film for a protection film for polarizer comprises a polypropylene-based resin produced with a metallocene catalyst.
    Type: Application
    Filed: November 19, 2007
    Publication date: March 11, 2010
    Inventors: Takatoshi Yosomiya, Kazuaki Watanabe, Naoko Maji
  • Patent number: 7495834
    Abstract: An optical media is constructed by superimposing a Fourier transform lens film 3 including a Fourier transform lens 2 on which optical image 10 is formed, and a light permeating sheet 5 provided with a plurality of light permeating portions 4 through which light can pass in a point-like manner. Viewing incident light coming from the side of the light permeating sheet 5 through light permeating portions 4 with eyes on the side of Fourier transform lens film 3. Due to this, an optical image 10 can be formed on the Fourier transform lens 2.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: February 24, 2009
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Takatoshi Yosomiya, Yoichi Takahashi, Masanori Akada
  • Publication number: 20060238872
    Abstract: An optical media is constructed by superimposing a Fourier transform lens film 3 including a Fourier transform lens 2 on which optical image 10 is formed, and a light permeating sheet 5 provided with a plurality of light permeating portions 4 through which light can pass in a point-like manner. Viewing incident light coming from the side of the light permeating sheet 5 through light permeating portions 4 with eyes on the side of Fourier transform lens film 3. Due to this, an optical image 10 can be formed on the Fourier transform lens 2.
    Type: Application
    Filed: April 10, 2006
    Publication date: October 26, 2006
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Takatoshi Yosomiya, Yoichi Takahashi, Masanori Akada
  • Patent number: 6635827
    Abstract: An adhesivity improving layer 2, and a flame-retardant heat-adhesive resin layer 3 comprising from 80 to 60 wt. % filler constituents mainly comprising a mixed flame retardant which comprises from 20 to 40 wt. % heat-adhesive resin mainly comprising a linear saturated polyester resin, and at least a hydrated metal compound, antimony oxide and a nitrogen compound, are sequentially laminated on one side of a heat-resistant substrate film 1, thereby preparing a flat cable covering 10. A flat cable is manufactured by placing the coverings 10 one on top of the other on both sides of a plurality of conductors 4 to 4 arranged in parallel so that the flame-retardant heat-adhesive resin layers 3 face each other, and heating and pressurizing the same for integration.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: October 21, 2003
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Takatoshi Yosomiya
  • Publication number: 20020195266
    Abstract: An adhesivity improving layer 2, and a flame-retardant heat-adhesive resin layer 3 comprising from 80 to 60 wt. % filler constituents mainly comprising a mixed flame retardant which comprises from 20 to 40 wt. % heat-adhesive resin mainly comprising a linear saturated polyester resin, and at least a hydrated metal compound, antimony oxide and a nitrogen compound, are sequentially laminated on one side of a heat-resistant substrate film 1, thereby preparing a flat cable covering 10. A flat cable is manufactured by placing the coverings 10 one on top of the other on both sides of a plurality of conductors 4 to 4 arranged in parallel so that the flame-retardant heat-adhesive resin layers 3 face each other, and heating and pressurizing the same for integration.
    Type: Application
    Filed: June 6, 2002
    Publication date: December 26, 2002
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventor: Takatoshi Yosomiya