Patents by Inventor Tadashi Ito

Tadashi Ito 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: 7504139
    Abstract: To provide an optical film which exhibits excellent retardation values both in the film plane and along the direction perpendicular to the film plane and shows little change in retardation values depending on environmental factors such as humidity, a liquid crystal display showing little change in viewing angle characteristics due to an environmental (humidity) change, and a polarizing plate to be used in the liquid crystal display, the cellulose acylate contains a cellulose acylate which is a mixed fatty acid ester of a cellulose and satisfies formulae specified in the specification, and a polarizing plate and a liquid crystal display using this cellulose acylate film.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: March 17, 2009
    Assignee: Fujifilm Corporation
    Inventors: Hiroyuki Kawanishi, Sumio Ohtani, Yosuke Nishiura, Tadashi Ito
  • Patent number: 7473446
    Abstract: A retarder comprising a substrate, a first optically anisotropic layer formed of a composition comprising a rod-like liquid-crystal compound substantially generating a phase difference of ? at 550 nm, and a second optically anisotropic layer formed of a composition comprising a rod-like liquid-crystal compound substantially generating a phase difference of ?/2 at 550 nm is disclosed. At least either one of the rod-like liquid-crystal compounds is denoted by Formula (I) Q1-L1-A1-L3-M-L4-A2-L2-Q2: where Q1 and Q2 denote polymerizable groups; L1 to L4 denote single bonds or divalent linking groups provided that at least either of L3 and L4 represents —O—CO—O—; A1 and A2 denote C2-20 spacer groups and M denotes a mesogen group; and an in-plane slow axis of the second layer and an in-plane slow axis of the first layer cross substantially at 60 degrees.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: January 6, 2009
    Assignee: Fujifilm Corporation
    Inventors: Tadashi Ito, Hiroshi Takeuchi
  • Publication number: 20080309860
    Abstract: An optical film which has Re(?) and Rth(?) fulfilling the following two formulae: 0?Re(590)?10 |Rth(590)|?25 wherein Re(?) is a retardation value in plane (nm) at a wavelength of ?nm; and Rth(?) is a retardation value in film thickness direction (nm) at a wavelength of ?mm.
    Type: Application
    Filed: May 18, 2005
    Publication date: December 18, 2008
    Applicant: FUJIFILM CORPORATION
    Inventors: Shigeaki Nimura, Hajime Nakayama, Yosuke Nishiura, Takako Nishiura, Tadashi Ito, Yasuo Mukunoki
  • Patent number: 7379131
    Abstract: A novel liquid crystal display device is disclosed. The device comprises two polarizer films, a liquid crystal cell disposed between these two polarizer films wherein liquid-crystalline molecules are oriented substantially normal to the substrates under non-operative state in the absence of applied external electric field; at least one layer of a first optically-anisotropic layer having an optically positive refractive anisotropy having Re falling within a range from 40 to 150 nm at visible light; and at least one layer of a second optically-anisotropic layer having an optically negative refractive anisotropy, and having Re of 10 nm or less and Rth falling within a range from 60 to 250 nm at visible light.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: May 27, 2008
    Assignee: Fujifilm Corporation
    Inventors: Tadashi Ito, Junichi Hirakata
  • Publication number: 20080062355
    Abstract: To provide a polarizing plate which has superior characteristics of expressing in-plane and thicknesswise retardation and which is less susceptible to time-varying changes in retardation value attributable to ambient humidity, as well as to provide a liquid crystal display which undergoes little tune-varying change in view angle characteristic, the polarizing plate which contains a transparent protective film having the retardation specified in the specification is housed in a moisture-proofed container under the humidity condition specified in the specification, and the liquid crystal display contains the polarizing plate.
    Type: Application
    Filed: December 21, 2004
    Publication date: March 13, 2008
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Hiroaki Sata, Yosuke Nishiura, Takako Nishiura, Tadashi Ito
  • Publication number: 20070292635
    Abstract: All optical compensation polarizing plate comprising: a first transparent protective film; a polarizer; a second transparent protective film; and an optical compensation layer in this order, wherein at least one of the first and second transparent protective films is a cellulose acylate film having a retardation value in plane Re (nm) and a retardation value in film thickness direction Rth (nm) which fulfill the following formulae (I) and (II), and Nz and Re1 defined by the following formulae (III) and (IV), of the optical compensation layer fulfill the following formulae (V) and (VI): (I) |Re|?10, (II) |Rth|?25, (III) Nz=(nx1?nz1)/(nx1?ny1), (IV) Re1=(nx1?ny1)×d1, (V) 0.4?Nz?0.
    Type: Application
    Filed: May 17, 2005
    Publication date: December 20, 2007
    Applicant: FUJIFILM Corporation
    Inventors: Yousuke Nishiura, Takako Nishiura, Hajime Nakayama, Tadashi Ito
  • Publication number: 20070104896
    Abstract: An optical film comprising: a transparent support; and at least one hard coat layer containing a translucent resin and a coagulating metal oxide particle, and having a surface haze value of from 0 to 12%, an internal haze value of from 0 to 35% and an Sm value of from 50 to 200 ?m.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 10, 2007
    Applicant: FUJIFILM Corporation
    Inventors: Naohiro Matsunaga, Tadashi Ito, Rikio Inoue, Yuuichi Fukushige
  • Publication number: 20070035682
    Abstract: A novel liquid crystal display device is disclosed. The device comprises two polarizer films, a liquid crystal cell disposed between these two polarizer films wherein liquid-crystalline molecules are oriented substantially normal to the substrates under non-operative state in the absence of applied external electric field; at least one layer of a first optically-anisotropic layer having an optically positive refractive anisotropy having Re falling within a range from 40 to 150 nm at visible light; and at least one layer of a second optically-anisotropic layer having an optically negative refractive anisotropy, and having Re of 10 nm or less and Rth falling within a range from 60 to 250 nm at visible light.
    Type: Application
    Filed: March 26, 2004
    Publication date: February 15, 2007
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Tadashi Ito, Junichi Hirakata
  • Patent number: 7094203
    Abstract: Gamma rays obtained from radioisotope administered to an examinee are detected by a gamma ray information-detecting unit so that a first tomographic image obtained therefrom is formed on a CRT. Further, a second tomographic image of the examinee detected by using an ultrasonic wave information-detecting unit juxtaposed with respect to the gamma ray information-detecting unit is formed while making the second tomographic image overlap on the first tomographic image. Thus, it is possible to obtain a tomographic image in which relative positional relationship of tissue is clear.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: August 22, 2006
    Assignee: Anzai Medical Kabushiki Kaisha
    Inventors: Tomio Inoue, Tadashi Ito, Masao Jimbo, Takeshi Sasaki, Shuji Tsuchiya, Kenzo Eguchi, Hao Wei, Katsuroh Ohwadano, Hideki Ryuo
  • Publication number: 20060163231
    Abstract: The present invention provides a ferritic stainless steel welding wire which allows prevention of wire breaking, fine refining of crystal grains, and increased cracking resistance. A wire rod used essentially consists of, in mass %, 0.03% or less of C, 3% or less of B, 3% or less of Mn, 2% or less of Ni, 11 to 20% of Zr, 3% or less of Mo, 1% or less of Co, 2% or less of Cu, 0.02 to 2.0% of Al, 0.2 to 1.0% of Ti, 0.02% or less of O, 0.04% or less of N, at least one of Nb and Ta, the mass % thereof being eight times the total mass % of the C and N to 1.0 mass %, and the balance of Fe and unavoidable impurities. When the number of crystals per square mm (mm2) of a cross section of the wire rod is defined as m, a grain number of the crystal expressed by an exponent (G) in an expression of m=8×2G is set to 3 to 10 by the heat treatment.
    Type: Application
    Filed: January 24, 2006
    Publication date: July 27, 2006
    Applicant: Nippon Welding Rod Co., Ltd.
    Inventors: Masaaki Kobayashi, Satoru Nonaka, Yukio Agata, Teiichiro Saito, Tadashi Ito
  • Publication number: 20060083867
    Abstract: A retarder comprising a substrate, a first optically anisotropic layer formed of a composition comprising a rod-like liquid-crystal compound substantially generating a phase difference of ? at 550 nm, and a second optically anisotropic layer formed of a composition comprising a rod-like liquid-crystal compound substantially generating a phase difference of ?/2 at 550 nm is disclosed. At least either one of the rod-like liquid-crystal compounds is denoted by Formula (I) Q1-L1-A1-L3-M-L4-A2-L2-Q2: where Q1 and Q2 denote polymerizable groups; L1 to L4 denote single bonds or divalent linking groups provided that at least either of L3 and L4 represents —O—CO—O—; A1 and A2 denote C2-20 spacer groups and M denotes a mesogen group; and an in-plane slow axis of the second layer and an in-plane slow axis of the first layer cross substantially at 60 degrees.
    Type: Application
    Filed: August 1, 2003
    Publication date: April 20, 2006
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Ito, Hiroshi Takeuchi
  • Patent number: 6946659
    Abstract: A radiation source distribution image of an examinee is formed by driving X direction movement motors to move a radiation information-detecting unit in the X direction, and detecting radiation from the examinee on a stretcher placed between guide rails by using a collimator and a line sensor which constitute a detection unit.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: September 20, 2005
    Assignee: Anzai Medical Kabushiki Kaisha
    Inventors: Tadashi Ito, Naoto Yasue, Masao Jimbo, Hideki Ryuo
  • Publication number: 20050142304
    Abstract: To provide an optical film which exhibits excellent retardation values both in the film plane and along the direction perpendicular to the film plane and shows little change in retardation values depending on environmental factors such as humidity, a liquid crystal display showing little change in viewing angle characteristics due to an environmental (humidity) change, and a polarizing plate to be used in the liquid crystal display, the cellulose acylate contains a cellulose acylate which is a mixed fatty acid ester of a cellulose and satisfies formulae specified in the specification, and a polarizing plate and a liquid crystal display using this cellulose acylate film.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 30, 2005
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Hiroyuki Kawanishi, Sumio Ohtani, Yosuke Nishiura, Tadashi Ito
  • Patent number: 6890600
    Abstract: A refined SiC single crystal that includes a small number of defects is provided as follows. At a first growth step, a first seed crystal is formed from a crude SiC single crystal, and a first grown crystal is formed on a first growth surface, which is a plane having an inclination of 20 degrees or smaller from a {1-100} plane or an inclination of 20 degrees or smaller from a {11-20} plane. At an intermediate growth step, an n growth crystal is formed on an n growth surface, which is a plane having an inclination of 45 to 90 degrees from an (n?1) growth surface and an inclination of 60 to 90 degrees from a {0001} plane. At a final growth step, a final SiC single crystal is formed on a final growth surface, which has an inclination of 20 degrees or smaller from a {0001} plane.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: May 10, 2005
    Assignees: Denso Corporation, Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Daisuke Nakamura, Tadashi Ito, Hiroyuki Kondo, Masami Naito
  • Patent number: 6822237
    Abstract: After the position of a collimator with respect to a gamma camera depending on the position of a detection plane in an examinee, gamma rays radiated from the examinee are detected by a scintillation detector via a collimator and a scintillator, and a signal from the scintillation detector is processed by a signal processing circuit and then transferred to an image reconstructing unit, which reconstructs a three-dimensional image of the radiation source in the examinee and displays the three-dimensional image on a display unit.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: November 23, 2004
    Assignee: Anzai Medical Kabushiki Kaisha
    Inventors: Tomio Inoue, Tadashi Ito, Masao Jimbo, Kenzo Eguchi, Katsuroh Ohwadano
  • Patent number: 6818374
    Abstract: Disclosed are a silver halide photographic light-sensitive material comprising silver halide containing a metal complex having a cyanide ligand in a silver halide emulsion layer and comprising a hydrazine compound having an onium group in the molecule, and a method of developing the silver halide photographic light-sensitive material with a developer having a pH of 9.0-11.0. The silver halide photographic light-sensitive material of the present invention can provide high sensitivity, high processing stability and high contrast images.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: November 16, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tokuju Oikawa, Tadashi Ito, Katsuyuki Watanabe, Mitsunori Hirano, Yasutomo Kawanishi
  • Patent number: 6790584
    Abstract: A silver halide photographic light-sensitive material having layers containing a swellable inorganic stratifying compound on both sides of a support and having at least one silver halide emulsion layer on at least one of the layers. There is provided a silver halide photographic light-sensitive material showing good dimensional stability.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: September 14, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Ito, Toshiaki Kubo
  • Publication number: 20040109114
    Abstract: A retarder comprising a substrate having a longitudinal direction and a first and second optically anisotropic layers respectively formed of a composition comprising a rod-like liquid-crystalline compound, in which the rod-like molecules are aligned homogeneously. The first layer substantially generates a phase difference of &pgr; at 550 nm, and the second layer substantially generates a phase difference of &pgr;/2 at 550 nm. An in-plane slow axis of the first layer and the longitudinal direction cross substantially at +30 degrees, an in-plane slow axis of the second layer and the longitudinal direction cross substantially at −30 degrees, and the slow axis of the second layer and the slow axis of the first layer cross substantially at 60 degrees. A circular polarizer comprising the retarder and a linear polarizer film having a transparent axis inclined at 45 degrees relative to the longitudinal direction is also disclosed.
    Type: Application
    Filed: August 6, 2003
    Publication date: June 10, 2004
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Takeuchi, Tadashi Ito
  • Patent number: 6710301
    Abstract: A flux-contained welding wire is provided wherein a conductive core wire can be disposed without any complicate manufacturing steps performed on a metal outer layer. Flux is filled inside of the metal outer layer. The conductive core wire is disposed nearly in the center of the flux without being supported by the metal outer layer. The flux contains 20-80 weight % of metal powder. A weight % of the weight of the flux to the weight of the welding wire per unit length is set in a range of 6.5-30 weight %. The weight % of the weight of the conductive core wire to the weight of the welding wire per unit length is set in a range of 1.5-15 weight %.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: March 23, 2004
    Assignee: Nippon Welding Rod Co., Ltd.
    Inventors: Teiichiro Saito, Tadashi Ito, Kazuo Tsujikawa, Toshio Yoshizawa, Toshiaki Fujita, Kanehisa Tanaka
  • Publication number: 20030235792
    Abstract: Disclosed are a silver halide photographic light-sensitive material comprising silver halide containing a metal complex having a cyanide ligand in a silver halide emulsion layer and comprising a hydrazine compound having an onium group in the molecule, and a method of developing the silver halide photographic light-sensitive material with a developer having a pH of 9.0-11.0. The silver halide photographic light-sensitive material of the present invention can provide high sensitivity, high processing stability and high contrast images.
    Type: Application
    Filed: March 21, 2003
    Publication date: December 25, 2003
    Inventors: Tokuju Oikawa, Tadashi Ito, Katsuyuki Watanabe, Mitsunori Hirano, Yasutomo Kawanishi