Patents by Inventor Morimasa Wada

Morimasa Wada 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).

  • Patent number: 8698981
    Abstract: A polarizer that can be used for forming a liquid crystal display or an electroluminescent display with less display irregularities and excellent display characteristics is provided. The polarizer contains a dichroic material in a matrix, and its in-plane retardation at a measurement wavelength providing no absorption is in a range of 950 to 1350 nm. The measurement wavelength is preferably a wavelength that the dichroic material provides no absorption, and it is 1000 nm, for example.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: April 15, 2014
    Assignee: Nitto Denko Corporation
    Inventors: Tadayuki Kameyama, Hiroaki Mizushima, Youichirou Sugino, Morimasa Wada
  • Patent number: 7968143
    Abstract: The present invention provides a method for manufacturing a polarizing film, by which, even when a wide raw film is used, it is possible to obtain a polarizing film that achieves excellent optical characteristics as well as uniformity in in-plane optical characteristics. The method includes the steps of dyeing a polymer film; stretching the dyed film; and drying the film that has undergone the dyeing and stretching steps while conveying the film with rolls. In the drying step, at least two rolls are used as the rolls and the film is dried under a condition that a ratio (R/W) of a distance (R) between the adjacent rolls to an initial width (W) of the polymer film is not less than 0.5 and not more than 4.0.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: June 28, 2011
    Assignee: Nitto Denko Corporation
    Inventors: Morimasa Wada, Tadayuki Kameyama, Hiroaki Mizushima, Naoki Tomoguchi
  • Patent number: 7815972
    Abstract: A polarizing film is provided that prevents display unevenness and can form a liquid crystal display and an electroluminescence display that exhibit excellent display characteristics. The polarizing film is produced in the following manner. That is, a hydrophilic polymer film is conveyed by means of a guide roll so as to be impregnated in an aqueous solvent in a swelling bath and is allowed to swell. In this swelling step, at least a first guide roll is arranged in the swelling bath, and when the polymer film is impregnated in and allowed to travel in the aqueous solvent, the polymer film is brought into contact with the first guide roll within a time up to when swelling reaches a saturation state. Further, the polymer film is dyed using a dichroic substance and stretched.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: October 19, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Tadayuki Kameyama, Youichirou Sugino, Hiroaki Mizushima, Morimasa Wada, Naoki Tomoguchi
  • Publication number: 20100206478
    Abstract: A method for producing a multilayer laminated film comprising: laminating a resin film having a moisture percentage of 10% by weight to 60% by weight with a first transparent film and a second transparent film each having a moisture percentage of 0.
    Type: Application
    Filed: April 27, 2010
    Publication date: August 19, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yutaka FUJITA, Kazuki TSUCHIMOTO, Morimasa WADA, Tomoyuki SENOO, Takafumi OOURA, Kentarou IKESHIMA, Tomoaki MASUDA
  • Patent number: 7767047
    Abstract: A method for producing a multilayer laminated film comprising: laminating a resin film having a moisture percentage of 10% by weight to 60% by weight with a first transparent film and a second transparent film each having a moisture percentage of 0.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: August 3, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Yutaka Fujita, Kazuki Tsuchimoto, Morimasa Wada, Tomoyuki Senoo, Takafumi Ooura, Kentarou Ikeshima, Tomoaki Masuda
  • Patent number: 7704572
    Abstract: An adhesive for polarizing plate used in order to provide a transparent protective film on at least one surface of a polarizer, comprising a crosslinking agent in the range of more than 30 parts by weight and 46 parts by weight or less relative to 100 parts by weight of a polyvinyl alcohol-based resin having an acetoacetyl group, is excellent in water resistance.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: April 27, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Youichirou Sugino, Ken Aoki, Tadayuki Kameyama, Hiroaki Mizushima, Morimasa Wada, Kenji Shimizu
  • Patent number: 7662447
    Abstract: An adhesive of the invention for polarizing plates used for forming an adhesive layer in a polarizing plate in which a polarizer and a transparent protective film is are adhering with each other via the adhesive layer, wherein the adhesive for polarizing plates is an aqueous solution containing a polyvinyl alcohol-based resin having an acetoacetyl group and a crosslinking agent, and the aqueous solution has a pH of 4.3 or less. The adhesive of the invention for polarizing plates is good in durability and long in pot life.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: February 16, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Naoki Tomoguchi, Tadayuki Kameyama, Morimasa Wada, Hiroaki Mizushima
  • Publication number: 20090147359
    Abstract: The present invention provides a method for manufacturing a polarizing film, by which, even when a wide raw film is used, it is possible to obtain a polarizing film that achieves excellent optical characteristics as well as uniformity in in-plane optical characteristics. The method includes the steps of dyeing a polymer film; stretching the dyed film; and drying the film that has undergone the dyeing and stretching steps while conveying the film with rolls. In the drying step, at least two rolls are used as the rolls and the film is dried under a condition that a ratio (R/W) of a distance (R) between the adjacent rolls to an initial width (W) of the polymer film is not less than 0.5 and not more than 4.0.
    Type: Application
    Filed: March 29, 2005
    Publication date: June 11, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Morimasa Wada, Tadayuki Kameyama, Hiroaki Mizushima, Naoki Tomoguchi
  • Publication number: 20090002608
    Abstract: A polarizer that can be used for forming a liquid crystal display or an electroluminescent display with less display irregularities and excellent display characteristics is provided. The polarizer contains a dichroic material in a matrix, and its in-plane retardation at a measurement wavelength providing no absorption is in a range of 950 to 1350 nm. The measurement wavelength is preferably a wavelength that the dichroic material provides no absorption, and it is 1000 nm, for example.
    Type: Application
    Filed: August 28, 2008
    Publication date: January 1, 2009
    Applicant: Nitto Denko Corporation
    Inventors: Tadayuki Kameyama, Hiroaki Mizushima, Youichirou Sugino, Morimasa Wada
  • Publication number: 20080011411
    Abstract: A method for producing a multilayer laminated film comprising: laminating a resin film having a moisture percentage of 10% by weight to 60% by weight with a first transparent film and a second transparent film each having a moisture percentage of 0.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 17, 2008
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yutaka Fujita, Kazuki Tsuchimoto, Morimasa Wada, Tomoyuki Senoo, Takafumi Ooura, Kentarou Ikeshima, Tomoaki Masuda
  • Publication number: 20080007829
    Abstract: A method of producing a polarizing plate of the present invention comprises the steps of: bonding a protective film to at least one side of a polarizing film that is produced through at least uniaxial stretching and has an absorption axis in the uniaxial stretching direction, and removing by cutting at least one of the edges of the polarizing film that are substantially parallel to the direction of the absorption axis before the bonding the protective film. The method widen the effective width of the polarizing plate, and a large size polarizing plate was obtained.
    Type: Application
    Filed: January 19, 2006
    Publication date: January 10, 2008
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroaki Mizushima, Yuuji Saiki, Tadayuki Kameyama, Morimasa Wada, Shinobu Nagano
  • Publication number: 20070148483
    Abstract: An adhesive of the invention for polarizing plates used for forming an adhesive layer in a polarizing plate in which a polarizer and a transparent protective film is are adhering with each other via the adhesive layer, wherein the adhesive for polarizing plates is an aqueous solution containing a polyvinyl alcohol-based resin having an acetoacetyl group and a crosslinking agent, and the aqueous solution has a pH of 4.3 or less. The adhesive of the invention for polarizing plates is good in durability and long in pot life.
    Type: Application
    Filed: December 15, 2004
    Publication date: June 28, 2007
    Applicant: Nitto Denko Corporation
    Inventors: Naoki Tomoguchi, Tadayuki Kameyama, Morimasa Wada, Hiroaki Mizushima
  • Patent number: 7221510
    Abstract: A process for producing a polarizing film including a step of stretching a raw film, wherein the ratio (L/W) of stretching distance (L) to width of initial raw film (W) is from 0.5 to 30.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: May 22, 2007
    Assignee: Nitto Denko Corporation
    Inventors: Hiroaki Mizushima, Tadayuki Kameyama, Ken Aoki, Morimasa Wada, Yoichiro Sugino, Kenji Shimizu
  • Publication number: 20060216738
    Abstract: The present invention relates to a method for determining haplotypes or diplotypes of a MDR1 gene targeting the 5? upstream regulatory region of MDR1 gene encoding P-gp, an ABC transporter which is may be expressed in the apical membrane side and may transport a wide range of substrates. By detecting a polymorphism at ?934 and/or ?692, in addition to a position selected from ?2903, ?2410, ?2352, ?1910, ?1717, and ?1325 in a nucleotide sequence of the 5? upstream regulatory region of MDR1 gene, haplotypes or diplotypes of the 5?upstream regulatory region of MDR1 gene may be determinable. The above positions to detect polymorphism are indicated in relation to a first base of ATG start codon which is set to +1. ATG start codon is located in exon 2, and the transcription start site corresponds to ?699 in this numbering system.
    Type: Application
    Filed: March 24, 2006
    Publication date: September 28, 2006
    Inventors: Morimasa Wada, Michihiko Kuwano
  • Publication number: 20060098137
    Abstract: A polarizer that can be used for forming a liquid crystal display or an electroluminescent display with less display irregularities and excellent display characteristics is provided. The polarizer contains a dichroic material in a matrix, and its in-plane retardation at a measurement wavelength providing no absorption is in a range of 950 to 1350 nm. The measurement wavelength is preferably a wavelength that the dichroic material provides no absorption, and it is 1000 nm, for example.
    Type: Application
    Filed: July 24, 2003
    Publication date: May 11, 2006
    Inventors: Tadayuki Kameyama, Hiroaki Mizushima, Youichirou Sugino, Morimasa Wada
  • Publication number: 20060033993
    Abstract: An adhesive for polarizing plate used in order to provide a transparent protective film on at least one surface of a polarizer, comprising a crosslinking agent in the range of more than 30 parts by weight and 46 parts by weight or less relative to 100 parts by weight of a polyvinyl alcohol-based resin having an acetoacetyl group, is excellent in water resistance.
    Type: Application
    Filed: May 21, 2004
    Publication date: February 16, 2006
    Applicant: NITTO DENKO CORPORATION
    Inventors: Youichirou Sugino, Ken Aoki, Tadayuki Kameyama, Hiroaki Mizushima, Morimasa Wada, Kenji Shimizu
  • Publication number: 20050271873
    Abstract: A polarizing film is provided that prevents display unevenness and can form a liquid crystal display and an electroluminescence display that exhibit excellent display characteristics. The polarizing film is produced in the following manner. That is, a hydrophilic polymer film is conveyed by means of a guide roll so as to be impregnated in an aqueous solvent in a swelling bath and is allowed to swell. In this swelling step, at least a first guide roll is arranged in the swelling bath, and when the polymer film is impregnated in and allowed to travel in the aqueous solvent, the polymer film is brought into contact with the first guide roll within a time up to when swelling reaches a saturation state. Further, the polymer film is dyed using a dichroic substance and stretched.
    Type: Application
    Filed: August 1, 2003
    Publication date: December 8, 2005
    Inventors: Tadayuki Kameyama, Youichirou Sugino, Hiroaki Mizushima, Morimasa Wada, Naoki Tomoguchi
  • Publication number: 20040212885
    Abstract: A process for producing a polarizing film including a step of stretching a raw film, wherein the ratio (L/W) of stretching distance (L) to width of initial raw film (W) is from 0.5 to 30.
    Type: Application
    Filed: April 23, 2004
    Publication date: October 28, 2004
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroaki Mizushima, Tadayuki Kameyama, Ken Aoki, Morimasa Wada, Yoichiro Sugino, Kenji Shimizu