Patents by Inventor Masayuki Kawai

Masayuki Kawai 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: 20230062690
    Abstract: An electronic balance includes: a non-contact sensor including a substrate, a light-emitting element and a light-receiving element, in which the light-emitting element is fixed to a surface of the substrate so as to be directed at a target sensing space, and the light-receiving element is fixed to the surface of the substrate, apart from the light-emitting element, so as to be directed at the target sensing space; and an operation controller configured to control an operation of a predetermined section of the electronic balance according to a detection signal from the non-contact sensor.
    Type: Application
    Filed: August 22, 2022
    Publication date: March 2, 2023
    Applicant: Shimadzu Corporation
    Inventors: Atsushi IIZUKA, Masayuki KAWAI
  • Publication number: 20230017252
    Abstract: An electronic balance includes a balance unit having a measuring pan surrounded by a space enclosed within a windshield having a door, and a rear-section casing formed by plates and containing a motor unit which includes a motor and a driving element connected with the rotation shaft of the motor. When the motor unit is fixed within the rear-section casing, the driving element protrudes through a driving-element hole in one of the plates to the outside of the rear-section casing and engages with a driven element fixed to the door so that the door can be opened and closed by the motor. When the motor must be replaced, the motor unit including the motor and the driving element in an integrated form can be entirely and easily replaced with a new motor unit.
    Type: Application
    Filed: July 14, 2022
    Publication date: January 19, 2023
    Applicant: SHIMADZU CORPORATION
    Inventors: Atsushi IIZUKA, Masayuki KAWAI
  • Patent number: 7619818
    Abstract: An elliptically polarizing plate including: a polarizer; and an optical film that includes a laminate of: a retardation film A that includes a cyclic polyolefin resin-containing thermoplastic polymer and has uniaxially-aligned positive refractive-index anisotropy characterized by nx>ny?nz; and a retardation film B that is fixed to homeotropic alignment and has positive refractive-index anisotropy characterized by nz1>nx1?ny1, wherein the optical film is laminated on one side of the polarizer in such a manner that a slow axis of the retardation film A is perpendicular to an absorption axis of the polarizer. The elliptically polarizing plate can suppress a reduction in contrast at wide viewing angles when applied to in-plane switching mode active matrix liquid crystal displays, and can be highly effective for improvements against color shift.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: November 17, 2009
    Assignee: Nitto Denko Corporation
    Inventors: Shuuji Yano, Masayuki Kawai, Ryouji Kinoshita
  • Patent number: 7586569
    Abstract: An IPS mode liquid crystal display comprising a liquid crystal cell, an optical film (F1) provided on a cell substrate on one side of the liquid crystal cell and comprises a polarizing plate comprising a transparent protective film having an in-plane retardation Re 10 nm or less and a thickness direction retardation Rth in the range of from 30 to 100 nm, a retardation film having an Nz value in the range of from 0.3 to 0.7 and an in-plane retardation Re1 in the range of from 200 to 300 nm, and an optical film (F2) provided on a cell substrate on the other side of the liquid crystal cell and comprises the polarizing plate and a retardation film having an Nz value in the range of from 0.9 to 1.2 and an in-plane retardation Re2 in the range of from 150 to 280 nm, and the absorption axes of the polarizing plates of the optical film (F1) and the optical film (F2) are perpendicular to each other, and both films are disposed so that the retardation film sides face the liquid crystal cell.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: September 8, 2009
    Assignee: Nitto Denko Corporation
    Inventors: Shuuji Yano, Masayuki Kawai
  • Patent number: 7466381
    Abstract: An optical film (3) of the invention comprises a polarizing Plate (1), in which a transparent protective film (1b) is laminated on both sides of a polarizer (1a), and plural retardation films (2) so that an absorption axis of the polarizing plate (1) is perpendicular or parallel to slow axes of the plural retardation films (2) and the slow axes of the plural retardation films (2) are parallel to one another. An Nz value expressed by Nz=(nx1?nz1)/(nx1?ny1) is in the range of from 0.15 to 0.85 and an in-plane retardation Re1 expressed by Re1=(nx1?ny1)×d1 is in the range of from 200 to 350 nm, where in each of the plural retardation films, a direction along with the refractive index in the film plane is maximum is defined as the X-axis, a direction perpendicular to the X-axis as the Y-axis, the thickness direction of the film as the Z-axis, and where refractive indices in each axial direction are defined as nx1, ny1, and nz1, respectively, and the thickness of the film as d1 (nm).
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: December 16, 2008
    Assignee: Nitto Denko Corporation
    Inventors: Shuuji Yano, Ryouji Kinoshita, Masayuki Kawai
  • Patent number: 7466382
    Abstract: An optical film(3) of the invention comprises a polarizing plate(1) and plural retardation films(2) so that an absorption axis of the polarizing plate(1) is perpendicular or parallel to slow axes of the plural retardation films(2) and the slow axes of the plural retardation films(2) are parallel to one another. An Nz value expressed by Nz=(nx1?nz1)/(nx1?ny1) is in the range of from 0.15 to 0.85 and an in-plane retardation Re1 expressed by Re1=(nx1?ny1)×d1 is in the range of from 200 to 350 nm, where in each of the plural retardation films, a direction along with the refractive index in the film plane is maximum is defined as the X-axis, a direction perpendicular to the X-axis as the Y-axis, the thickness direction of the film as the Z-axis, and where refractive indices in each axial direction are defined as nx1, ny1, and nz1, respectively, and the thickness of the film as d1 (nm). The optical film may realize an easily viewable display with high contrast ratio in a wide range.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: December 16, 2008
    Assignee: Nitto Denko Corporation
    Inventors: Shuuji Yano, Ryouji Kinoshita, Masayuki Kawai
  • Patent number: 7365816
    Abstract: A liquid crystal display of the invention comprises an in-plane switching liquid crystal panel containing a liquid crystal layer whose alignment orientation changes according to an electric field in parallel with a surface of a substrate; a first polarizing plate and a second polarizing plate disposed sandwiching the liquid crystal panel therebetween; a first optical film inserted between the first polarizing plate and the liquid crystal panel; and a second optical film inserted between the second polarizing plate and the liquid crystal panel, wherein the first optical film includes: a retardation film A1 having a relation of nz>nx?ny; and a retardation film B having an in-plane retardation (Re) in the range of from 200 to 300 nm, a relation of nx>nz>ny and satisfying Nz coefficient in the range of 0.3<Nz<0.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: April 29, 2008
    Assignee: Nitto Denko Corporation
    Inventors: Masayuki Kawai, Shuuji Yano, Seiji Umemoto
  • Publication number: 20080018831
    Abstract: An elliptically polarizing plate of the invention comprises: a polarizer; and an optical film that comprises a laminate of: a retardation film A that comprises a cyclic polyolefin resin-containing thermoplastic polymer and has uniaxially-aligned positive refractive-index anisotropy characterized by nx>ny?nz, wherein nx is a refractive index in the direction of X axis along which the in-plane refractive index is maximum, ny is a refractive index in the direction of Y axis perpendicular to X axis, and nz is a refractive index in the direction of Z axis that is the direction of the thickness; and a retardation film B that is fixed to homeotropic alignment and has positive refractive-index anisotropy characterized by nz1>nx1?ny1, wherein nx1 is a refractive index in the direction of X axis along which the in-plane refractive index is maximum, ny1 is a refractive index in the direction of Y axis perpendicular to X axis, and nz1 is a refractive index in the direction of Z axis that is the direction of the thi
    Type: Application
    Filed: April 5, 2005
    Publication date: January 24, 2008
    Inventors: Shuuji Yano, Masayuki Kawai, Ryouji Kinoshita
  • Patent number: 7288297
    Abstract: The present invention provides an optical compensation plate having an optical compensation layer in which occurrence of cracks due to an applied pressure and deformation caused by heat or the like are suppressed. By applying an adhesive that contains a moisture-curing isocyanate compound and has a glass transition temperature of 100° C. or less onto at least one surface of the optical compensation layer and curing the adhesive, an anti-cracking layer is formed directly on the surface of the optical compensation layer. The occurrence of cracks and the deformation in the optical compensation layer can be prevented by this anti-cracking layer. The optical compensation layer preferably is a layer having a cholesteric structure, and a constituent material thereof preferably is a non-liquid crystal polymer formed by polymerizing aligned liquid crystal monomers or an aligned liquid crystal polymer.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: October 30, 2007
    Assignee: Nitto Denko Corporation
    Inventors: Masayuki Kawai, Junichi Adachi, Shuuji Yano, Takashi Yamaoka, Kanako Wasai
  • Patent number: 7270855
    Abstract: A method for preparing an optical film, which comprises applying and developing an application liquid mixture containing a liquid crystal monomer, a chiral agent and a polymerization initiator on an orientation substrate, subjecting the resultant developed layer to a heat treatment, to orient the monomer to a cholesteric structure, and then subjecting the developed layer to a poltmerization treatment, to polymerize the oriented liquid crystal monomer, thereby forming an optical film exhibiting a selective reflection wave length of 100 to 320 nm. An optical film prepared by the above method is reduced in the coloring due to selective reflection.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: September 18, 2007
    Assignee: Nitto Denko Corporation
    Inventors: Takashi Yamaoka, Shuuji Yano, Junichi Adachi, Masayuki Kawai, Kanako Wasai, Nao Murakami
  • Patent number: 7235283
    Abstract: The present invention provides an optical compensation plate having an optical compensation layer in which cracks occurring due to an applied pressure is suppressed. By applying a curable adhesive agent onto at least one surface of the optical compensation layer and curing the adhesive, an anti-cracking layer is formed directly on the surface of the optical compensation layer. The occurrence of cracks in the optical compensation layer can be prevented by this anti-cracking layer. The optical compensation layer preferably is a layer having a cholesteric structure, and the constituent material thereof is preferably a non-liquid crystal polymer formed by polymerizing aligned liquid crystal monomers or an aligned liquid crystal polymer.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: June 26, 2007
    Assignee: Nitto Denko Corporation
    Inventors: Junichi Adachi, Shuuji Yano, Takashi Yamaoka, Masayuki Kawai, Kanako Wasai, Nao Murakami
  • Publication number: 20070091236
    Abstract: An optical film(3) of the invention comprises a polarizing plate(1), in which a transparent protective film(1b) is laminated on both sides of a polarizer(1a), and plural retardation films(2) so that an absorption axis of the polarizing plate(1) is perpendicular or parallel to slow axes of the plural retardation films(2) and the slow axes of the plural retardation films(2) are parallel to one another. An Nz value expressed by Nz=(nx1?nz1)/(nx1?ny1) is in the range of from 0.15 to 0.85 and an in-plane retardation Re1 expressed by Re1=(nx1?ny1)×d1 is in the range of from 200 to 350 nm, where in each of the plural retardation films, a direction along with the refractive index in the film plane is maximum is defined as the X-axis, a direction perpendicular to the X-axis as the Y-axis, the thickness direction of the film as the Z-axis, and where refractive indices in each axial direction are defined as nx1, ny1, and nz1, respectively, and the thickness of the film as d1 (nm).
    Type: Application
    Filed: September 13, 2004
    Publication date: April 26, 2007
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shuuji Yano, Ryouji Kinoshita, Masayuki Kawai
  • Publication number: 20070002228
    Abstract: An optical film(3) of the invention comprises a polarizing plate(1) and plural retardation films(2) so that an absorption axis of the polarizing plate(1) is perpendicular or parallel to slow axes of the plural retardation films(2) and the slow axes of the plural retardation films(2) are parallel to one another. An Nz value expressed by Nz=(nx1?nz1)/(nx1?ny1) is in the range of from 0.15 to 0.85 and an in-plane retardation Re1 expressed by Re1=(nx1?ny1)×d1 is in the range of from 200 to 350 nm, where in each of the plural retardation films, a direction along with the refractive index in the film plane is maximum is defined as the X-axis, a direction perpendicular to the X-axis as the Y-axis, the thickness direction of the film as the Z-axis, and where refractive indices in each axial direction are defined as nx1, ny1, and nz1, respectively, and the thickness of the film as d1 (nm). The optical film may realize an easily viewable display with high contrast ratio in a wide range.
    Type: Application
    Filed: September 13, 2004
    Publication date: January 4, 2007
    Inventors: Shuuji Yano, Ryouji Kinoshita, Masayuki Kawai
  • Patent number: 7130007
    Abstract: An optical film obtained by stretching a polymer film comprising a polycarbonate resin and a styrene resin: wherein a photoelastic coefficient is 2.0×10?11 to 6.0×10?11 m2/N, and a three dimensional refractive index is controlled so that an Nz coefficient may satisfy a relationship of Nz?0.9 and a front retardation (Re) may satisfy a relationship of Re?80 nm, has characteristics of giving wide viewing angle and also outstanding durability.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: October 31, 2006
    Assignee: Nitto Denko Corporation
    Inventors: Masahiro Hata, Ryouji Kinoshita, Shuuji Yano, Masayuki Kawai
  • Patent number: 7126754
    Abstract: A polarizing plate with an optical compensation layer is provided, which has an excellent peelability and is easy to reattach after mounted on an image display apparatus. A pressure-sensitive adhesive layer satisfying the condition (I) below is formed on both surfaces of an optical compensation layer, and one of the pressure-sensitive adhesive layers is further laminated with a polarizing plate.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: October 24, 2006
    Assignee: Nitto Denko Corporation
    Inventors: Takashi Yamaoka, Junichi Adachi, Masayuki Kawai, Nao Murakami, Hiroyuki Yoshimi, Shuuji Yano, Kanako Wasai
  • Publication number: 20060170848
    Abstract: A liquid crystal display of the invention comprises an in-plane switching liquid crystal panel containing a liquid crystal layer whose alignment orientation changes according to an electric field in parallel with a surface of a substrate; a first polarizing plate and a second polarizing plate disposed sandwiching the liquid crystal panel therebetween; a first optical film inserted between the first polarizing plate and the liquid crystal panel; and a second optical film inserted between the second polarizing plate and the liquid crystal panel, wherein the first optical film includes: a retardation film A1 having a relation of nz>nx?ny; and a retardation film B having an in-plane retardation (Re) in the range of from 200 to 300 nm, a relation of nx>nz>ny and satisfying Nz coefficient in the range of 0.3<Nz<0.
    Type: Application
    Filed: March 30, 2005
    Publication date: August 3, 2006
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masayuki Kawai, Shuuji Yano, Seiji Umemoto
  • Publication number: 20060061697
    Abstract: The present invention provides an optical compensation plate having an optical compensation layer in which occurrence of cracks due to an applied pressure and deformation caused by heat or the like are suppressed. By applying an adhesive that contains a moisture-curing isocyanate compound and has a glass transition temperature of 100° C. or less onto at least one surface of the optical compensation layer and curing the adhesive, an anti-cracking layer is formed directly on the surface of the optical compensation layer. The occurrence of cracks and the deformation in the optical compensation layer can be prevented by this anti-cracking layer. The optical compensation layer preferably is a layer having a cholesteric structure, and a constituent material thereof preferably is a non-liquid crystal polymer formed by polymerizing aligned liquid crystal monomers or an aligned liquid crystal polymer.
    Type: Application
    Filed: August 5, 2004
    Publication date: March 23, 2006
    Applicant: NITTO DENKO CORPORATION
    Inventors: Masayuki Kawai, Junichi Adachi, Shuuji Yano, Takashi Yamaoka, Kanako Wasai
  • Publication number: 20050213012
    Abstract: An IPS mode liquid crystal display comprising a liquid crystal cell, an optical film (F1) provided on a cell substrate on one side of the liquid crystal cell and comprises a polarizing plate comprising a transparent protective film having an in-plane retardation Re 10 nm or less and a thickness direction retardation Rth in the range of from 30 to 100 nm, a retardation film having an Nz value in the range of from 0.3 to 0.7 and an in-plane retardation Re1 in the range of from 200 to 300 nm, and an optical film (F2) provided on a cell substrate on the other side of the liquid crystal cell and comprises the polarizing plate and a retardation film having an Nz value in the range of from 0.9 to 1.2 and an in-plane retardation Re2 in the range of from 150 to 280 nm, and the absorption axes of the polarizing plates of the optical film (F1) and the optical film (F2) are perpendicular to each other, and both films are disposed so that the retardation film sides face the liquid crystal cell.
    Type: Application
    Filed: March 21, 2005
    Publication date: September 29, 2005
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shuuji Yano, Masayuki Kawai
  • Publication number: 20050122586
    Abstract: The present invention provides an optical compensation plate having an optical compensation layer in which cracks occurring due to an applied pressure is suppressed. By applying a curable adhesive agent onto at least one surface of the optical compensation layer and curing the adhesive, an anti-cracking layer is formed directly on the surface of the optical compensation layer. The occurrence of cracks in the optical compensation layer can be prevented by this anti-cracking layer. The optical compensation layer preferably is a layer having a cholesteric structure, and the constituent material thereof is preferably a non-liquid crystal polymer formed by polymerizing aligned liquid crystal monomers or an aligned liquid crystal polymer.
    Type: Application
    Filed: January 22, 2003
    Publication date: June 9, 2005
    Applicant: Nitto Denko Corporation
    Inventors: Junichi Adachi, Shuuji Yano, Takashi Yamaoka, Masayuki Kawai, Kanako Wasai, Nao Murakami
  • Patent number: D583950
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: December 30, 2008
    Assignee: Omron Healthcare Co., Ltd.
    Inventors: Kazunobu Itonaga, Toshihiko Ogura, Tadashi Koike, Yoshimi Niwa, Atsushi Sato, Naoki Mori, So Noguchi, Shuji Tsuruta, Masayuki Kawai