Patents by Inventor Masahiro Okuda

Masahiro Okuda 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: 7897333
    Abstract: A reagent for measuring clotting time is described. The reagent comprises a complex of a phospholipid and a recombinant tissue factor obtained by using an insect or a cultured insect cell as a host; and a soluble component derived from the insect or the cultured insect cell. A method for manufacturing the reagent is also described.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: March 1, 2011
    Assignee: Sysmex Corporation
    Inventors: Masahiro Okuda, Tomokuni Taniguchi, Masayuki Yuki
  • Patent number: 7867771
    Abstract: The present invention provides a reagent for measuring clotting time including a nonionic surfactant, a nickel ion and a tissue factor. A method for stabilizing a tissue factor, and use of a nonionic surfactant and a nickel salt for stabilizing a tissue factor are also disclosed.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: January 11, 2011
    Assignee: Sysmex Corporation
    Inventors: Masahiro Okuda, Kazuyo Yoshida
  • Publication number: 20110000786
    Abstract: The subject invention provides a method which enables easy and efficient production of fine electret fine particles without the conventional pulverization or screening process. The method of producing electret fine particles comprises emulsifying a fluorine-containing compound in the liquid phase under atmospheric or elevated pressure in a liquid incompatible with the fluorine-containing compound, to obtain emulsified particles, and irradiating the emulsified particles with an electron ray or a radial ray.
    Type: Application
    Filed: March 5, 2010
    Publication date: January 6, 2011
    Applicant: SAKURA COLOR PRODUCTS CORPORATION
    Inventors: Hiroshi Inoue, Masahiro Okuda
  • Publication number: 20100086736
    Abstract: A white polyester film containing voids, wherein a resin constituting the film has a layer (layer A) formed by using a polyester resin and a cyclic olefin copolymerized resin, and wherein a void ratio taken in a cross-section of the layer is more than 25% and 75% or less and the average particle size of the cyclic olefin copolymerized resin in the film is 0.1 ?m or more and 3 ?m or less.
    Type: Application
    Filed: January 28, 2008
    Publication date: April 8, 2010
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Takashi Ueda, Hideki Fujii, Tatsuo Yoshida, Kozo Takahashi, Masahiro Okuda, Kazunori Tanaka, Toshihiko Hiraoka
  • Publication number: 20100034987
    Abstract: A white polyester film for a liquid crystal display reflective plate realizes a high level of brightness when used in side light type liquid crystal displays and direct type liquid crystal displays. The white polyester film for a light reflective plate has a thickness of 200 ?m or more, wherein, in at least one side (side A) of the white polyester film, M is M ??0.0110 (%/nm) and R560 ?100 (%) when the wavelength dependency of spectral reflectance at a wavelength of 450 to 600 nm is approximated according to the following approximation formula R: R=M×?+B, in which R is an approximation formula by a least square method and represents a light reflectance (%), ? represents a wavelength of light (nm), M represents a wavelength coefficient (%/nm), B represents a constant (%), and R560 represents an estimated reflectance obtained by introducing ?=560 nm into the approximation formula R (%).
    Type: Application
    Filed: October 23, 2007
    Publication date: February 11, 2010
    Inventors: Hideki Fujii, Kazunori Tanaka, Masahiro Okuda
  • Publication number: 20090239306
    Abstract: The present invention relates to a reference material for assaying D-dimer, comprising a fibrin degradation product, wherein no less than 70% of a total peak area has the molecular weight of no less than 500,000 in a molecular weight distribution of the fibrin degradation product, measured by gel filtration chromatography.
    Type: Application
    Filed: May 5, 2009
    Publication date: September 24, 2009
    Applicant: SYSMEX CORPORATION
    Inventors: Masahiro OKUDA, Hiroki Takeshita
  • Patent number: 7538487
    Abstract: There is provided a display device which quenches ambient light by using only an optical interference effect without additionally using an optical filter such as a color filter, and can provide good visibility out of doors in the daylight. The display device includes a plurality of organic EL elements each having a light extraction electrode, a reflective electrode, and a plurality of organic compound layers disposed between the electrodes, wherein the plurality of organic EL elements include at least organic EL elements which emit a red light, a green light, and a blue light, respectively; a layer comprised of a material having anomalous dispersion is disposed at a location which is on a light extraction side with respect to the reflective electrode in each of the plurality of organic EL elements; and an ambient light reflectance of the display device shows a minimal in a region of 535 nm or more and 575 nm or less.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: May 26, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshinori Hasegawa, Hiroshi Matsuda, Masahiro Okuda, Masataka Yashima, Koichi Fukuda, Nobutaka Mizuno
  • Publication number: 20090098585
    Abstract: A reagent kit capable of distinguishing between a blood sample containing lupus anticoagulant and blood samples from individuals having other anticoagulant diseases is disclosed. The reagent kit comprises two coagulation time reagents containing phosphatidylserine in a different phosphatidylserine content ratio to the total content of phospholipids from each other, threreby giving different coagulation times with use of corresponding coagulation time reagent.
    Type: Application
    Filed: November 12, 2008
    Publication date: April 16, 2009
    Applicant: SYSMEX CORPORATION
    Inventor: Masahiro OKUDA
  • Publication number: 20090092958
    Abstract: A method of inactivating a blood coagulation factor is described. The method comprises a step of contacting a sample containing at least one of factors V and VIII with a compound having an iminodiacetate group, whereby at least one of factors V and VIII in the sample is changed into an inactivated form.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 9, 2009
    Applicant: Sysmex Corporation
    Inventors: Masahiro OKUDA, Yoshihito Yamamoto, Akira Yoshioka, Midori Shima, Masahiro Takeyama
  • Publication number: 20080241941
    Abstract: The present invention provides a reagent for measuring clotting time comprising a nonionic surfactant, a nickel ion and a tissue factor. A method for stabilizing a tissue factor, and use of a nonionic surfactant and a nickel salt for stabilizing a tissue factor are also disclosed.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 2, 2008
    Applicant: SYSMEX CORPORATION
    Inventors: Masahiro Okuda, Kazuyo Yoshida
  • Publication number: 20080185954
    Abstract: Provided is a display apparatus including: a plurality of pixels each having a plurality of light emitting devices each showing different luminescent colors; and a circularly polarizing member placed on a light extraction side of each of the light emitting devices and being across the light emitting devices to be commonly used by the light emitting devices, in which: the circularly polarizing member shows a higher transmittance for a first luminescent color out of the plurality of luminescent colors in a light emitting device showing the first luminescent color than a transmittance for any other color; and a transmittance for the first luminescent color in a light emitting device showing any other luminescent color is lower than the transmittance for the first luminescent color in the light emitting device showing the first luminescent color.
    Type: Application
    Filed: September 19, 2007
    Publication date: August 7, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Koichi Fukuda, Masahiro Okuda, Hiroshi Matsuda
  • Patent number: 7399693
    Abstract: This invention provides a semiconductor film manufacturing method using a new separation technique and applications thereof. The semiconductor film manufacturing method of this invention includes a separation layer forming a step of hetero-epitaxially growing a separation layer (2) on a seed substrate (1), a semiconductor film forming step of forming a semiconductor film (3) on the separation layer (2), and a separation step of separating, by using the separation layer (2), the semiconductor film (3) from a composite member (Ia) formed in the semiconductor film forming step.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: July 15, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinobu Sekiguchi, Takao Yonehara, Makoto Koto, Masahiro Okuda, Tetsuya Shimada
  • Publication number: 20080124704
    Abstract: A reagent for measuring clotting time is described. The reagent comprises a complex of a phospholipid and a recombinant tissue factor obtained by using an insect or a cultured insect cell as a host; and a soluble component derived from the insect or the cultured insect cell. A method for manufacturing the reagent is also described.
    Type: Application
    Filed: November 14, 2007
    Publication date: May 29, 2008
    Applicant: SYSMEX CORPORATION
    Inventors: Masahiro OKUDA, Tomokuni Taniguchi, Masayuki Yuki
  • Publication number: 20070069641
    Abstract: There is provided a display device which quenches ambient light by using only an optical interference effect without additionally using an optical filter such as a color filter, and can provide good visibility out of doors in the daylight. The display device includes a plurality of organic EL elements each having a light extraction electrode, a reflective electrode, and a plurality of organic compound layers disposed between the electrodes, wherein the plurality of organic EL elements include at least organic EL elements which emit a red light, a green light, and a blue light, respectively; a layer comprised of a material having anomalous dispersion is disposed at a location which is on a light extraction side with respect to the reflective electrode in each of the plurality of organic EL elements; and an ambient light reflectance of the display device shows a minimal in a region of 535 nm or more and 575 nm or less.
    Type: Application
    Filed: September 22, 2006
    Publication date: March 29, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: TOSHINORI HASEGAWA, Hiroshi Matsuda, Masahiro Okuda, Masataka Yashima, Koichi Fukuda, Nobutaka Mizuno
  • Publication number: 20060246688
    Abstract: This invention provides a semiconductor film manufacturing method using a new separation technique and applications thereof. The semiconductor film manufacturing method of this invention includes a separation layer forming a step of hetero-epitaxially growing a separation layer (2) on a seed substrate (1), a semiconductor film forming step of forming a semiconductor film (3) on the separation layer (2), and a separation step of separating, by using the separation layer (2), the semiconductor film (3) from a composite member (Ia) formed in the semiconductor film forming step.
    Type: Application
    Filed: June 15, 2005
    Publication date: November 2, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yoshinobu Sekiguchi, Takao Yonehara, Makoto Koto, Masahiro Okuda, Tetsuya Shimada
  • Publication number: 20060246052
    Abstract: The present invention is to provide a means for the stabilization of thrombin and a stabilized thrombin-containing composition having a good reproducibility of the measurement. There are provided a means for the stabilization of thrombin, characterized in that, effective amount(s) of one or more which is/are selected from calcium ion, surfactant and protein is/are contained and a stabilized thrombin-containing composition as well. There are also provided a means for the stabilization of thrombin where an effective amount of a water-soluble organic acid is jointly used in addition to the above and a stabilized thrombin-containing composition as well. There is further provided a thrombin-containing composition having an extremely high measurement reproducibility using thrombin and stabilizer for thrombin where one or more high-molecular polysaccharides or synthetic polymers is/are contained in the above-mentioned stabilized thrombin-containing composition.
    Type: Application
    Filed: June 27, 2006
    Publication date: November 2, 2006
    Inventors: Masahiro Okuda, Norihiro Kikukawa
  • Publication number: 20060194272
    Abstract: The present invention relates to a reference material for assaying D-dimer, comprising a fibrin degradation product, wherein no less than 70% of a total peak area has the molecular weight of no less than 500,000 in a molecular weight distribution of the fibrin degradation product, measured by gel filtration chromatography.
    Type: Application
    Filed: February 22, 2006
    Publication date: August 31, 2006
    Inventors: Masahiro Okuda, Hiroki Takeshita
  • Publication number: 20060068454
    Abstract: A method of inactivating a blood coagulation factor is described. The method comprises a step of contacting a sample containing at least one of factors V and VIII with a compound having an iminodiacetate group, whereby at least one of factors V and VIII in the sample is changed into an inactivated form.
    Type: Application
    Filed: September 26, 2005
    Publication date: March 30, 2006
    Inventors: Masahiro Okuda, Yoshihito Yamamoto, Akira Yoshioka, Midori Shima, Masahiro Takeyama
  • Publication number: 20050202509
    Abstract: The present invention provides a reagent for measuring clotting time that allows accurate analysis of blood coagulation in samples containing antiphospholipid antibodies, wherein the clotting time is measured by using a sample containing an antiphospholipid antibody, a causative substance of antiphospholipid antibody syndromes, and the reagent for measuring clotting time containing antibody, serum, plasma and immunoglobulin of vertebrates except human.
    Type: Application
    Filed: November 24, 2004
    Publication date: September 15, 2005
    Inventors: Masahiro Okuda, Susumu Hoshiko
  • Publication number: 20050175983
    Abstract: A first aspect of the present invention relates to a reagent kit for detecting lupus anticoagulant comprising a first coagulation time measurement reagent containing phospholipid including phosphatidylserine and phosphatidylethanolamine and a second coagulation time measurement reagent containing phospholipid including phosphatidylserine and phosphatidylethanolamine wherein the concentration of phosphatidylethanolamine of said first coagulation time measurement reagent is in the range from 40 to 280 ?M, and the concentration of phosphatidylethanolamine contained in said second coagulation time measurement reagent is in the range from 1 to 30 ?M.
    Type: Application
    Filed: February 7, 2005
    Publication date: August 11, 2005
    Inventor: Masahiro Okuda