Patents by Inventor Hirofumi Yazaki

Hirofumi Yazaki 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: 8038694
    Abstract: A lancet instrument detachably fitted to a lancing apparatus, comprising a lancet having a lancet body with a sharp lancet tip at its tip, a lancet hub fixed to the lancet body so that the lancet tip is exposed, and an elastic deformation part extended from the lancet hub in the tip direction and elastically deformable so that the distance thereof from the lancet body can be changed, a ring-like member fitted to the outer periphery of the elastic deformation part and releasable in the tip direction by changing the distance between the elastic deformation part and the lancet body, and a casing having a ring-like member contact part storing the lancet so as to be movable in the longitudinal direction and formed in the inner peripheral part thereof so that the ring-like member is brought into contact therewith and stopped to move in the tip direction and a tip opening through which the lancet tip can be projected.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: October 18, 2011
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Masafumi Takemoto, Hirofumi Yazaki
  • Publication number: 20080103517
    Abstract: A lancet instrument detachably fitted to a lancing apparatus, comprising a lancet having a lancet body with a sharp lancet tip at its tip, a lancet hub fixed to the lancet body so that the lancet tip is exposed, and an elastic deformation part extended from the lancet hub in the tip direction and elastically deformable so that the distance thereof from the lancet body can be changed, a ring-like member fitted to the outer periphery of the elastic deformation part and releasable in the tip direction by changing the distance between the elastic deformation part and the lancet body, and a casing having a ring-like member contact part storing the lancet so as to be movable in the longitudinal direction and formed in the inner peripheral part thereof so that the ring-like member is brought into contact therewith and stopped to move in the tip direction and a tip opening through which the lancet tip can be projected.
    Type: Application
    Filed: September 6, 2005
    Publication date: May 1, 2008
    Applicant: Termumo Kabushiki Kaisha
    Inventors: Masafumi Takemoto, Hirofumi Yazaki
  • Patent number: 7214362
    Abstract: An object of the present invention is to provide a method for purifying a highly pure niobium compound and/or tantalum compound, the method enabling the purification of a highly pure niobium compound and tantalum compound in a simplified manner at a low cost. The object is met by providing a method comprising adding an organic solvent to an aqueous solution containing a niobium compound and/or tantalum compound together with impurities, and then performing extraction via the solution. A niobium compound and/or tantalum compound dissolved in a solution is allowed to precipitate, and said aqueous solution is obtained by dissolving the precipitate in water.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: May 8, 2007
    Assignee: Stella Chemifa Kabushiki Kaisha
    Inventors: Hirohisa Kikuyama, Masahide Waki, Hiroto Izumi, Hirofumi Yazaki, Kenji Aoki, Shinji Hashiguchi, Masatsugu Kawawaki, Yuko Murakami
  • Patent number: 7175823
    Abstract: The present invention provides a method enabling the high purification of a niobium compound and/or tantalum compound in a simplified manner at a low cost. This is accomplished by providing a method enabling the high purification of a niobium compound and/or tantalum compound comprising the steps of preparing a solution containing niobium and/or tantalum, allowing a precipitate comprising niobium and/or tantalum to develop, separating the precipitate by filtration from the filtrate, converting the precipitate to a liquid melt or taking the filtrate, and separating a niobium compound from a tantalum compound or vice versa by utilizing the difference in solubility to the solvent between the niobium compound and the tantalum compound.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: February 13, 2007
    Assignee: Stella Chemifa Kabushiki Kaisha
    Inventors: Hirohisa Kikuyama, Masahide Waki, Hiroto Izumi, Hirofumi Yazaki, Kenji Aoki, Shinji Hashiguchi, Masatsugu Kawawaki, Yuko Murakami
  • Publication number: 20060212021
    Abstract: A humor sampling implement includes a detection unit having a main frame part possessing a blood transfer channel to collect blood through a blood inflow port and transfer the blood to a blood outflow port, and a test paper for detecting glucose in the blood transferred through the blood transfer channel. The main frame part is furnished with a projection protruding in the blood transfer channel toward the blood outflow port. The blood transfer channel can be configured to include a first blood transfer channel opening to the blood inflow port and a second blood transfer channel connected to the first blood transfer channel, wherein the direction of blood transfer is different from that in the first blood transfer channel, and the projection is provided at an end portion of the first blood transfer channel on blood outflow port side so as to protrude in the second blood transfer channel.
    Type: Application
    Filed: March 24, 2004
    Publication date: September 21, 2006
    Applicant: Terumo Kabushiki Kaisha
    Inventors: Hirofumi Yazaki, Toshihisa Nakamura, Yoshiaki Yaguchi
  • Patent number: 7033563
    Abstract: A method for reducing oxygen and carbon components in high-purity fluoride such as calcium fluoride and barium fluoride (a high-purity fluoride that is not limited to calcium fluoride and barium fluoride), or in rare-earth fluorides such as ytterbium fluoride and cerium fluoride used for an optical fiber, a coating material, and so on. The oxygen and carbon components contained in the high-purity fluoride are reduced by a fluorine gas treatment.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: April 25, 2006
    Assignee: Stella Chemifa Kabushiki Kaisha
    Inventors: Hirohisa Kikuyama, Hirofumi Yazaki, Tomohiko Satonaga
  • Publication number: 20050255035
    Abstract: The present invention provides a method enabling the high purification of a niobium compound and/or tantalum compound in a simplified manner at a low cost. This is accomplished by providing a method enabling the high purification of a niobium compound and/or tantalum compound comprising the steps of preparing a solution containing niobium and/or tantalum, allowing a precipitate comprising niobium and/or tantalum to develop, separating the precipitate by filtration from the filtrate, converting the precipitate to a liquid melt or taking the filtrate, and separating a niobium compound from a tantalum compound or vice versa by utilizing the difference in solubility to the solvent between the niobium compound and the tantalum compound.
    Type: Application
    Filed: February 27, 2003
    Publication date: November 17, 2005
    Inventors: Hirohisa Kikuyama, Masahide Waki, Hiroto Izumi, Hirofumi Yazaki, Kenji Aoki, Shinji Hashiguchi, Masatsugu Kawawaki, Yuko Murakami
  • Publication number: 20050123459
    Abstract: The present invention provides a method for purifying a niobium compound and/or tantalum compound in a simplified manner at a low cost. This is accomplished by providing a method for purifying a niobium compound and/or tantalum compound whereby a niobium compound and/or tantalum compound dissolved in a solvent is allowed to precipitate to be isolated.
    Type: Application
    Filed: February 27, 2003
    Publication date: June 9, 2005
    Inventors: Hirohisa Kikuyama, Masahide Waki, Hiroto Izumi, Hirofumi Yazaki, Kenji Aoki, Shinji Hashiguchi, Masatsugu Kawawaki, Yuko Murakami
  • Publication number: 20050115364
    Abstract: An object of the present invention is to provide a method for purifying a highly pure niobium compound and/or tantalum compound, the method enabling the purification of a highly pure niobium compound and tantalum compound in a simplified manner at a low cost. The object is met by providing a method comprising adding an organic solvent to an aqueous solution containing a niobium compound and/or tantalum compound together with impurities, and then performing extraction via the solution. A niobium compound and/or tantalum compound dissolved in a solution is allowed to precipitate, and said aqueous solution is obtained by dissolving the precipitate in water.
    Type: Application
    Filed: February 27, 2003
    Publication date: June 2, 2005
    Inventors: Hirohisa Kikuyama, Masahide Waki, Hiroto Izumi, Hirofumi Yazaki, Kenji Aoki, Shinji Hashiguchi, Masatsugu Kawawaki, Yuko Murakami
  • Patent number: 6884403
    Abstract: A method of purifying lithium hexafluorophosphate that allows to purify lithium hexafluorophosphate, useful as lithium secondary cell electrolyte, organic synthesis medium or the like, to an extremely high purity is provided. Lithium hexafluorophosphate containing harmful impurities such as oxyfluoride, lithium fluoride is purified by adding phosphoric chloride. The purification is performed in the presence of phosphoric chloride and hydrogen fluoride of the quantity equal or superior to the equivalent amount for reacting them, and then by converting lithium fluoride lithium hexafluorophosphate with generated phosphor pentafluoride.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: April 26, 2005
    Assignee: Stella Chemifa Kabushiki Kaisha
    Inventors: Hirohisa Kikuyama, Toshirou Fukudome, Masahide Waki, Hirofumi Yazaki
  • Publication number: 20040062696
    Abstract: To provide a method for reducing oxygen and carbon components in high-purity fluoride such as calcium fluoride and barium fluoride (high-purity fluoride is not limited to calcium fluoride and barium fluoride), or in rare-earth fluoride such as ytterbium fluoride and cerium fluoride used for an optical fiber, a coating material, and so on.
    Type: Application
    Filed: August 8, 2003
    Publication date: April 1, 2004
    Inventors: Hirohisa Kikuyama, Hirofumi Yazaki, Tomohiko Satonaga
  • Publication number: 20030143145
    Abstract: A method of purifying lithium hexafluorophosphate that allows to purify lithium hexafluorophosphate, useful as lithium secondary cell electrolyte, organic synthesis medium or the like, to an extremely high purity is provided. Lithium hexafluorophosphate containing harmful impurities such as oxyfluoride, lithium fluoride is purified by adding phosphoric chloride. The purification is performed in the presence of phosphoric chloride and hydrogen fluoride of the quantity equal or superior to the equivalent amount for reacting them, and then by converting lithium fluoride lithium hexafluorophosphate with generated phosphor pentafluoride.
    Type: Application
    Filed: January 6, 2003
    Publication date: July 31, 2003
    Inventors: Hirohisa Kikuyama, Toshirou Fukudome, Masahide Waki, Hirofumi Yazaki
  • Patent number: 6514474
    Abstract: A method of purifying lithium hexafluorosphate that allows to purify lithium hexafluorophosphate, useful as lithium secondary cell electrolyte, organic synthesis medium or the like, to an extremely high purity is provided. Lithium hexafluorophosphate containing harmful impurities such as oxyfluoride, lithium fluoride is purified by adding phosphoric chloride. The purification is performed in the presence of phosphoric chloride and hydrogen fluoride of the quantity equal or superior to the equivalent amount for reacting them, and then by converting lithium fluoride to lithium hexafluorophosphate with generated phosphor pentafluoride.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: February 4, 2003
    Assignee: Stella Chemifa Kabushiki Kaisha
    Inventors: Hirohisa Kikuyama, Toshirou Fukudome, Masahide Waki, Hirofumi Yazaki