Patents by Inventor Keiichiro Mizuta

Keiichiro Mizuta 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: 9243013
    Abstract: The present invention provides a method of producing a tetracyanoborate-containing ionic compound in a milder condition more efficiently and less expensively than conventional methods, and a tetracyanoborate-containing ionic compound having a reduced content of impure components. An ionic compound of the present invention is represented by the following general formula (I), has a content of fluorine atom-containing impurities of 3 mol % or less per 100 mol % of the ionic compound, and a method for producing an ionic compound represented by the general formula (I) of the present invention comprises a step of reacting starting materials containing a cyanide and a boron compound. (In the formula, Ktm+ denotes an organic cation [Ktb]m+ or an inorganic cation [Ke]m+; and m denotes an integer of 1 to 3.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: January 26, 2016
    Assignee: NIPPON SHOKUBAI CO., LTD.
    Inventors: Yuji Hagiwara, Takanori Ochi, Kazunobu Ohata, Taisuke Kasahara, Taketo Toba, Keiichiro Mizuta, Hiromoto Katsuyama, Satoshi Ishida, Toshifumi Nishida
  • Patent number: 8273263
    Abstract: An ionic compound is provided that has an anion represented by a: formula (1) and a cation represented by a formula (2): where X is an element selected from the group consisting of B, C, N, O, Al, Si, P, S, As, and Se, M1 and M2 are identical or different, and represent linking groups, and, when multiple M1s or multiple M2s are present, they may be identical or different, Q represents a monovalent element or organic group, a represents an integer of 1 or more, and b, c, d, and a each represent an integer of 0 or more; and RS-LH?(2) where L is an element selected from the group consisting of C, Si, N, P, S, and 0, R represents a monovalent element, functional group, or organic group, and s represents an integer of 2 to 4.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: September 25, 2012
    Assignee: Nichicon Corporation
    Inventors: Daisuke Kubo, Takayuki Ueda, Hideyuki Tahara, Keiichiro Mizuta, Hironobu Hashimoto, Taisuke Kasahara
  • Patent number: 8124869
    Abstract: The present invention provides a dye-sensitized solar cell of high safety, of improved ionic conductivity, and, therefore, of excellent cell performance. The present invention is related to a dye-sensitized solar cell comprising an ionic substance having an anion represented by the following general formula (1): (wherein X represents at least one element selected from among B, C, N, O, Al, Si, P, As, and Se. M1 and M2 are the same or different and each represents an organic linking group. Q represents an organic group. a is an integer of not less than 1, and b, c, d, and e each is an integer of not less than 0).
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: February 28, 2012
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Keiichiro Mizuta, Junichi Nakamura
  • Patent number: 8116069
    Abstract: Provide is an aluminum electrolytic capacitor exhibiting low specific resistance and low impedance property and realizing high reliability. An electrolytic capacitor has a structure in which: a capacitor element which is formed by rolling an anode foil and a cathode foil each connected with an electrode extraction lead through a separator and which is impregnated with a drive electrolytic solution is included in a cylindrical outer case having a closed-end; and an open end of the outer case is sealed with an elastic sealing body, in which: the drive electrolytic solution contains a tricyanomethide salt represented by the below-indicated chemical formula (1); and the drive electrolytic solution has a water content of 3.0 wt % or less: where, R represents a cation pairing with a tricyanomethide ion in formation of a tricyanomethide salt.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: February 14, 2012
    Assignees: Nichicon Corporation, Nippon Shokubai Co., Ltd
    Inventors: Satoshi Tani, Seitaro Onoue, Takayuki Ueda, Keiichiro Mizuta, Hironobu Hashimoto, Taisuke Kasahara
  • Publication number: 20110150736
    Abstract: The present invention provides a method of producing a tetracyanoborate-containing ionic compound in a milder condition more efficiently and less expensively than conventional methods, and a tetracyanoborate-containing ionic compound having a reduced content of impure components. An ionic compound of the present invention is represented by the following general formula (I), has a content of fluorine atom-containing impurities of 3 mol % or less per 100 mol % of the ionic compound, and a method for producing an ionic compound represented by the general formula (I) of the present invention comprises a step of reacting starting materials containing a cyanide and a boron compound. (In the formula, Ktm+ denotes an organic cation [Ktb]m+ or an inorganic cation [Ke]m+; and m denotes an integer of 1 to 3.
    Type: Application
    Filed: August 21, 2009
    Publication date: June 23, 2011
    Inventors: Yuji Hagiwara, Takanori Ochi, Kazunobu Ohata, Taisuke Kasahara, Taketo Toba, Keiichiro Mizuta, Hiromoto Katsuyama, Satoshi Ishida, Toshifumi Nishida
  • Patent number: 7914927
    Abstract: It is an object of the present invention to provide a material for electrolytic solutions suited for use as material in electrolytic solutions serving as ionic conductors in electrochemical devices, such as large-capacity cells or batteries. The present invention is related to a material for electrolytic solutions which comprises, as an essential constituent, an anion represented by the general formula (i): wherein X represents at least one element selected from among B, N, O, Al, Si, P, S, As and Se; M1 and M2 are the same or different and each represents an organic linking group; a is an integer of not less than i, and b, c And d each independently is an integer of not less than 0.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: March 29, 2011
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Keiichiro Mizuta, Yukiko Yamamoto
  • Publication number: 20100173195
    Abstract: It is an object of the present invention to provide a material for electrolytic solutions suited for use as material in electrolytic solutions serving as ionic conductors in electrochemical devices, such as large-capacity cells or batteries. The present invention is related to a material for electrolytic solutions which comprises, as an essential constituent, an anion represented by the general formula (1): wherein X represents at least one element selected from among B, N, O, Al, Si, P, S, As and Se; M1 and M2 are the same or different and each represents an organic linking group; a is an integer of not less than 1, and b, c and d each independently is an integer of not less than 0.
    Type: Application
    Filed: March 17, 2010
    Publication date: July 8, 2010
    Applicant: Nippon Shokubai Co., Ltd.
    Inventors: Keiichiro Mizuta, Yukiko Yamamoto
  • Patent number: 7713658
    Abstract: It is an object of the present invention to provide a material for electrolytic solutions suited for use as material in electrolytic solutions serving as ionic conductors in electrochemical devices, such as large-capacity cells or batteries. The present invention is related to a material for electrolytic solutions which comprises, as an essential constituent, an anion represented by the general formula (1): wherein X represents at least one element selected from among B, N, O, Al, Si, P, S, As and Se; M1 and M2 are the same or different and each represents an organic linking group; a is an integer of not less than 1, and b, c and d each independently is an integer of not less than 0.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: May 11, 2010
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Keiichiro Mizuta, Yukiko Yamamoto
  • Publication number: 20100053847
    Abstract: Provide is an aluminum electrolytic capacitor exhibiting low specific resistance and low impedance property and realizing high reliability. An electrolytic capacitor has a structure in which: a capacitor element which is formed by rolling an anode foil and a cathode foil each connected with an electrode extraction lead through a separator and which is impregnated with a drive electrolytic solution is included in a cylindrical outer case having a closed-end; and an open end of the outer case is sealed with an elastic sealing body, in which: the drive electrolytic solution contains a tricyanomethide salt represented by the below-indicated chemical formula (1); and the drive electrolytic solution has a water content of 3.0 wt % or less: where, R represents a cation pairing with a tricyanomethide ion in formation of a tricyanomethide salt.
    Type: Application
    Filed: December 7, 2006
    Publication date: March 4, 2010
    Applicants: NICHICON CORPORATION, NIPPON SHOKUBAI CO., LTD.
    Inventors: Tomoyuki Tani, Seitaro Onoue, Takayuki Ueda, Keiichiro Mizuta, Hironobu Hashimoto, Taisuke Kasahara
  • Publication number: 20080138704
    Abstract: An object of the present invention is to provide a material for an electrolytic solution having improved ionic conductivity and, showing excellent in low temperature property, being stable with time, and being electrochemically stable at a high potential, and an ionic material-containing composition exhibiting excellent fundamental performance such as electrochemical stability, and preferably used in a variety of utilities. Another object of the present invention is to provide utilities thereof. The material for an electrolytic solution is the material containing an ionic compound, and the material comprises a cyano group-containing anion represented by the formula (1); and 1 to 99% by mass of a solvent in 100% by mass of the material for an electrolytic solution.
    Type: Application
    Filed: May 9, 2005
    Publication date: June 12, 2008
    Applicant: Nippon Shokubai Co., Ltd.
    Inventors: Keiichiro Mizuta, Keiko Takebe
  • Publication number: 20080083626
    Abstract: The present invention provides an ionic compound which: can exert excellent basic performance such as excellent electrochemical stability including an excellent ionic conductivity; is excellent in pH stability; and can suitably find use in a variety of applications, and an electrolyte material, an electrolytic solution, and an electrolytic capacitor each containing the ionic compound. Anionic compound of the present invention has an anion represented by a general formula (1) and a cation represented by a general formula (2): where X represents an element selected from B, C, N, O, Al, Si, P, S, As, and Se, M1 and M2 represent linking groups, Q represents a monovalent element or organic group, a represents an integer of 1 or more, and b, c, d, and e each represent an integer of 0 or more; Rs-LH???(2) where L represents an element selected from C, Si, N, P, S, and O, R represents a monovalent element, functional group, or organic group, and s represents an integer of 2, 3, or 4.
    Type: Application
    Filed: July 27, 2007
    Publication date: April 10, 2008
    Applicants: Nichicon Corporation, Nippon Shokubai Co., Ltd.
    Inventors: Daisuke Kubo, Takayuki Ueda, Hideyuki Tahara, Keiichiro Mizuta, Hironobu Hashimoto, Taisuke Kasahara
  • Publication number: 20070173614
    Abstract: An object of the present invention is to provide a polyether composition that can suppress reduction in a molecular weight of polyether having a low glass transition temperature and melting point. As a means of achieving this object, a polyether composition of the present invention contains polyether having a glass transition temperature of ?50° C. or lower and a melting point of 55° C. or lower and, at the same time, contains at least one kind selected from the group consisting of compounds represented by the specified three general formulas.
    Type: Application
    Filed: March 8, 2005
    Publication date: July 26, 2007
    Applicants: Nippon Shokubai Co., Ltd., Dai-ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Keiichiro Mizuta, Teruki Matsushita, Kenji Shimizu, Kazuo Takei, Michiyuki Kono, Manabu Kikuta, Nobuo Ochiai
  • Publication number: 20040163700
    Abstract: The present invention provides a dye-sensitized solar cell of high safety, of improved ionic conductivity, and, therefore, of excellent cell performance.
    Type: Application
    Filed: January 14, 2004
    Publication date: August 26, 2004
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Keiichiro Mizuta, Junichi Nakamura
  • Publication number: 20040002002
    Abstract: It is an object of the present invention to provide a material for electrolytic solutions suited for use as material in electrolytic solutions serving as ionic conductors in electrochemical devices, such as large-capacity cells or batteries.
    Type: Application
    Filed: April 1, 2003
    Publication date: January 1, 2004
    Applicant: Nippon Shokubai Co., Ltd.
    Inventors: Keiichiro Mizuta, Yukiko Yamamoto
  • Patent number: 6541657
    Abstract: The present invention provides: an unsaturated carboxylate which has both an unsaturated group and a hydroxyl group, and is applicable to a wide range of crosslinking processes, and has moderate polymerizability, and has a novel specific structure; and a production process which enables to obtain this unsaturated carboxylate without causing the rearrangement of the carbon-carbon unsaturated bond of the raw unsaturated oxirane, and gives a high production ratio of unsaturated oxirane-1-mol adduct. A reaction of a specific unsaturated carboxylic acid with a specific unsaturated oxirane is carried out using at least one catalyst selected from the group consisting of chromium compounds, manganese compounds, iron compounds, nickel compounds, zinc compounds, silver compounds, tin compounds, neodymium compounds, and lead compounds, thereby obtaining an unsaturated carboxylate of general formula (1).
    Type: Grant
    Filed: March 17, 2001
    Date of Patent: April 1, 2003
    Assignee: Nippon Shokubai Co., Ltd
    Inventors: Kazuaki Abe, Keiichiro Mizuta, Rie Inoue
  • Publication number: 20010051744
    Abstract: The present invention provides: an unsaturated carboxylate which has both an unsaturated group and a hydroxyl group, and is applicable to a wide range of crosslinking processes, and has moderate polymerizability, and has a novel specific structure; and a production process which enables to obtain this unsaturated carboxylate without causing the rearrangement of the carbon-carbon unsaturated bond of the raw unsaturated oxirane, and gives a high production ratio of unsaturated oxirane-1-mol adduct. A reaction of a specific unsaturated carboxylic acid with a specific unsaturated oxirane is carried out using at least one catalyst selected from the group consisting of chromium compounds, manganese compounds, iron compounds, nickel compounds, zinc compounds, silver compounds, tin compounds, neodymium compounds, and lead compounds, thereby obtaining an unsaturated carboxylate of general formula (1).
    Type: Application
    Filed: March 17, 2001
    Publication date: December 13, 2001
    Applicant: Nippon Shokubai Co., Ltd.
    Inventors: Kazuaki Abe, Keiichiro Mizuta, Rie Inoue
  • Patent number: 6191229
    Abstract: The present invention provides (meth)acryl syrup which shows excellent storage stability as a molding material, and also provides a method of manufacturing the (meth)acryl syrup in a shorter period of time compared with the conventional method, and a molding material which permits a molded article having excellent heat-resistance, solvent-resistance, weathering resistance, and water-resistance, etc., to be manufactured. The (meth)acryl syrup is manufactured, for example, by polymerizing a monomer component including (meth)acrylic ester and a vinyl monomer having a carboxyl group in a presence of a thiol compound, and subsequently processing the reaction mixture with maleic anhydride and a basic compound. The molding material includes the (meth)acryl syrup, and may also include a thickening agent, derivatives of succinic acid, a reinforcing material, etc.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: February 20, 2001
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Masazumi Sasabe, Akihiko Fukada, Keiichiro Mizuta
  • Patent number: 6140396
    Abstract: A resin composition including N-oxyls having a specific structure and a synthetic resin, such as a vinyl ester resin, an urethane(meth)acrylate resin, an unsaturated polyester resin, a polyester(meth)acrylate resin, and acrylic syrup. A producing process of a resin composition by preparing the synthetic resin through reaction in the presence of the N-oxyls. According to the above arrangement and producing process, it has become possible to provide a resin composition having excellent physical properties, such as storage stability and curing property, and capable of suppressing the coloring over time, and hence, can be used suitably in diversified fields, and to provide a producing process of such a resin composition capable of suppressing the coloring.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: October 31, 2000
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Takuo Sugioka, Keiichiro Mizuta, Masahiko Kajino