Patents by Inventor Masao Ichikawa
Masao Ichikawa 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).
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Patent number: 11915928Abstract: A semiconductor memory device includes a first conductive layer, a semiconductor layer extending in a first direction and being opposed to the first conductive layer, and a gate insulating film disposed between the first conductive layer and the semiconductor layer. The first conductive layer includes a first region, a second region disposed between the first region and the gate insulating film, and a third region disposed between the first region and the first interlayer insulating layer. The first to the third regions contain a metal. The third region contains silicon (Si). The first region does not contain silicon (Si) or has a lower silicon (Si) content than a silicon (Si) content in the third region. The second region does not contain silicon (Si) or has a lower silicon (Si) content than the silicon (Si) content in the third region.Type: GrantFiled: September 10, 2021Date of Patent: February 27, 2024Assignee: Kioxia CorporationInventors: Masahiro Koike, Masao Shingu, Masaya Ichikawa
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Patent number: 10297831Abstract: An object of the present disclosure is to provide an anode layer for a fluoride ion battery in which decomposition of a binder is restrained. The present disclosure attains the object by providing an anode layer to be used for a fluoride ion battery, the anode layer comprising an anode active material and a non-fluorine-based binder having aromaticity.Type: GrantFiled: May 31, 2017Date of Patent: May 21, 2019Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, HONDA MOTOR CO., LTD., KYOTO UNIVERSITYInventors: Hirofumi Nakamoto, Masao Ichikawa, Zempachi Ogumi, Takeshi Abe
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Publication number: 20170352887Abstract: An object of the present disclosure is to provide an anode layer for a fluoride ion battery in which decomposition of a binder is restrained. The present disclosure attains the object by providing an anode layer to be used for a fluoride ion battery, the anode layer comprising an anode active material and a non-fluorine-based binder having aromaticity.Type: ApplicationFiled: May 31, 2017Publication date: December 7, 2017Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, HONDA MOTOR CO., LTD., KYOTO UNIVERSITYInventors: Hirofumi NAKAMOTO, Masao ICHIKAWA, Zempachi OGUMI, Takeshi ABE
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Publication number: 20120149555Abstract: A method for producing an alloy catalyst for redox reaction comprising alloy particles of platinum and nickel, wherein the alloy particles are equipped at an outer surface with a crystal lattice plane represented by a Miller index {111} and have an average particle diameter in a range of 6 to 20 nm, the method comprising: dissolving, in an alcohol, a salt and/or complex of platinum, a salt and/or complex of nickel, and a polymer containing a plurality of salt structures comprising an organic cation and a halogen anion in a polymer chain and heating the resulting solution to reflux under an inert atmosphere.Type: ApplicationFiled: December 7, 2011Publication date: June 14, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Ryogo Sakamoto, Kaoru Omichi, Masao Ichikawa
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Publication number: 20100316937Abstract: An alloy catalyst for redox reaction which is capable of obtaining even superior catalytic activity comprises alloy particles of platinum and nickel, wherein the alloy particle is equipped at an outer surface with a crystal lattice plane represented by a Miller index {111}, and has an average particle diameter in a range of from 6 to 20 nm. The alloy particle preferably takes a shape selected from a regular octahedron, a truncated octahedron, a regular tetrahedron, and a truncated tetrahedron.Type: ApplicationFiled: June 10, 2010Publication date: December 16, 2010Inventors: Ryogo SAKAMOTO, Kaoru Omichi, Masao Ichikawa
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Publication number: 20090054228Abstract: A catalyst has an underlayer and a platinum layer formed thereon. The underlayer contains a transition metal other than platinum group metals or an alloy thereof. The platinum layer, which contains platinum, has a thickness of at least 0.4 nm but less than 1 nm.Type: ApplicationFiled: August 21, 2008Publication date: February 26, 2009Applicant: HONDA MOTOR CO., LTD.Inventors: Masao ICHIKAWA, Kenji OKAMOTO, Terumi FURUTA, Ryogo SAKAMOTO, Kaoru OMICHI
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Patent number: 7287311Abstract: A manufacturing method of a stator for vehicular rotary electric machine includes: forming an indentation in a radial direction in a side face of each of electrical conductors in the machine by pressing; inserting the electrical conductors in a radially side-by-side relationship with each other in slots of the machine; bending each of the electrical conductors and radially adjacent electrical conductors in different circumferential directions by a predetermined pole pitch such that the indentations formed in respective side faces of the adjacent electrical conductors pass each other in a face-to-face relationship; and bonding on each of the electrical conductors to one end of the adjacent electrical conductors.Type: GrantFiled: May 24, 2005Date of Patent: October 30, 2007Assignee: DENSO CorporationInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Patent number: 7057315Abstract: An alternator for use in an automobile includes a stator supported between a front housing and a rear housing, and a rotor connected to a rotor shaft and rotatably supported inside the stator. A cooling fan is positioned at an end of a pole core of the rotor. The cooling fan is coupled to the rotor shaft by engaging edges of a center opening of the cooling fan with a non-circular flange formed on the rotor shaft. The cooling fan is correctly positioned relative to the rotor shaft, without using a jig, both in the radial direction and in the rotational direction of cooling fan. Noises and vibrations due to rotational imbalance of the cooling fan are suppressed.Type: GrantFiled: May 26, 2005Date of Patent: June 6, 2006Assignee: Denso CorporationInventors: Hiroshi Ishida, Masao Ichikawa
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Patent number: 7034429Abstract: To secure insulation between electrical conductors at a coil end, a first electrical conductor at one coil end is arranged so as to intersect a radially adjacent second electrical conductor at one point or more. The electrical conductor is formed with radial indentations in side faces that are opposite side faces in opposing electrical conductors at any of the intersecting portions, the indentations having depths that increase toward the near ear of the electrical conductors. Sufficient clearances are thereby secured between electrical conductors in their intersecting portions near their ends where the insulating films are susceptible to damage because of welding heat. Electrical insulation is thus ensured, and the cooling efficiency at the coil end is improved.Type: GrantFiled: January 3, 2005Date of Patent: April 25, 2006Assignee: Denso CorporationInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Publication number: 20050285459Abstract: An alternator for use in an automobile includes a stator supported between a front housing and a rear housing, and a rotor connected to a rotor shaft and rotatably supported inside the stator. A cooling fan is positioned at an end of a pole core of the rotor. The cooling fan is coupled to the rotor shaft by engaging edges of a center opening of the cooling fan with a non-circular flange formed on the rotor shaft. The cooling fan is correctly positioned relative to the rotor shaft, without using a jig, both in the radial direction and in the rotational direction of cooling fan. Noises and vibrations due to rotational imbalance of the cooling fan are suppressed.Type: ApplicationFiled: May 26, 2005Publication date: December 29, 2005Applicant: Denso CorporationInventors: Hiroshi Ishida, Masao Ichikawa
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Publication number: 20050217105Abstract: To secure insulation between electrical conductors at a coil end, a first electrical conductor at one coil end is arranged so as to intersect a radially adjacent second electrical conductor at one point or more. The electrical conductor is formed with radial indentations in side faces that are opposite side faces in opposing electrical conductors at any of the intersecting portions, the indentations having depths that increase toward the near ear of the electrical conductors. Sufficient clearances are thereby secured between electrical conductors in their intersecting portions near their ends where the insulating films are susceptible to damage because of welding heat. Electrical insulation is thus ensured, and the cooling efficiency at the coil end is improved.Type: ApplicationFiled: May 24, 2005Publication date: October 6, 2005Applicant: Denso CorporationInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Publication number: 20050116571Abstract: To secure insulation between electrical conductors at a coil end, a first electrical conductor at one coil end is arranged so as to intersect a radially adjacent second electrical conductor at one point or more. The electrical conductor is formed with radial indentations in side faces that are opposite side faces in opposing electrical conductors at any of the intersecting portions, the indentations having depths that increase toward the near ear of the electrical conductors. Sufficient clearances are thereby secured between electrical conductors in their intersecting portions near their ends where the insulating films are susceptible to damage because of welding heat. Electrical insulation is thus ensured, and the cooling efficiency at the coil end is improved.Type: ApplicationFiled: January 3, 2005Publication date: June 2, 2005Applicant: Denso CorporationInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Patent number: 6897594Abstract: To secure insulation between electrical conductors at a coil end, a first electrical conductor at one coil end is arranged so as to intersect a radially adjacent second electrical conductor at one point or more. The electrical conductor is formed with radial indentations in side faces that are opposite side faces in opposing electrical conductors at any of the intersecting portions, the indentations having depths that increase toward the near end of the electrical conductors. Sufficient clearances are thereby secured between electrical conductors in their intersecting portions near their ends where the insulating films are susceptible to damage because of welding heat. Electrical insulation is thus ensured, and the cooling efficiency at the coil end is improved.Type: GrantFiled: January 14, 2003Date of Patent: May 24, 2005Assignee: Denso CorporationInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Patent number: 6872286Abstract: A water electrolyte cell can be used with a high energy efficiency over a long period of time. The water electrolyte cell has a pair of catalytic layers and an electrolyte membrane sandwiched between the catalytic layers. The catalytic layers includes an anode catalytic layer which contains a catalyst comprising an alloy of ruthenium, iridium, and at least one metal selected from the group consisting of iron, nickel, and cobalt, or an oxide of the alloy, or a mixture of the alloy and an oxide thereof. The at least one metal has a molar ratio with respect to ruthenium and iridium in the range from 0.05 to 0.13 mol with respect to 0.8 to 2.2 mols, preferably 1.8 to 2.2 mols, of ruthenium and 0.8 to 1.2 mols of iridium. The electrolyte membrane comprises a solid polymer electrolyte membrane.Type: GrantFiled: September 20, 2002Date of Patent: March 29, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Masao Ichikawa, Kenta Urata, Katsutoshi Nosaki, Masanori Okabe
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Patent number: 6770393Abstract: A proton conducting polymer obtained by blending an organic phosphoric acid compound solution with a meta type polyaniline solution; a solid polymer electrolyte for a fuel cell comprising the proton conducting polymer, which is excellent in proton conductivity, methanol barrier property and dopant stability in an aqueous solution of methanol; and an electrode comprising the proton conducting and fine catalyst particles carried on porous particles.Type: GrantFiled: July 11, 2002Date of Patent: August 3, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroshi Akita, Masao Ichikawa, Masaru Iguchi, Hiroyuki Oyanagi
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Patent number: 6767664Abstract: A proton conducting polymer obtained by blending an organic phosphoric acid compound solution with a meta type polyaniline solution; a solid polymer electrolyte for a fuel cell comprising the proton conducting polymer, which is excellent in proton conductivity, methanol barrier property and dopant stability in an aqueous solution of methanol; and an electrode comprising the proton conducting and fine catalyst particles carried on porous particles.Type: GrantFiled: July 11, 2002Date of Patent: July 27, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroshi Akita, Masao Ichikawa, Masaru Iguchi, Hiroyuki Oyanagi
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Patent number: 6710506Abstract: An ac generator includes a stator having a stator core with a plurality of slots and a stator winding disposed in the slots and a rotor having trapezoidal claw-shaped pole pieces that alternately extend in opposite directions to interleave each other. In such an ac generator, each pole piece has a chamfered surface at the tip. The chamfered surface increases a distance from the inside surface of the stator core as the chamfered surface becomes away from the circumferential center of the pole pieces. The chamfered surface has narrower area at the front half in the rotation direction than the rear half.Type: GrantFiled: January 13, 2003Date of Patent: March 23, 2004Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Atsuo Ishizuka, Masao Ichikawa
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Publication number: 20030137214Abstract: An ac generator includes a stator having a stator core with a plurality of slots and a stator winding disposed in the slots and a rotor having trapezoidal claw-shaped pole pieces that alternately extend in opposite directions to interleave each other. In such an ac generator, each pole piece has a chamfered surface at the tip. The chamfered surface increases a distance from the inside surface of the stator core as the chamfered surface becomes away from the circumferential center of the pole pieces. The chamfered surface has narrower area at the front half in the rotation direction than the rear half.Type: ApplicationFiled: January 13, 2003Publication date: July 24, 2003Applicant: DENSO CORPORATIONInventors: Atsuo Ishizuka, Masao Ichikawa
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Publication number: 20030135980Abstract: To secure insulation between electrical conductors at a coil end, a first electrical conductor at one coil end is arranged so as to intersect a radially adjacent second electrical conductor at one point or more. The electrical conductor is formed with radial indentations in side faces that are opposite side faces in opposing electrical conductors at any of the intersecting portions, the indentations having depths that increase toward the near end of the electrical conductors. Sufficient clearances are thereby secured between electrical conductors in their intersecting portions near their ends where the insulating films are susceptible to damage because of welding heat. Electrical insulation is thus ensured, and the cooling efficiency at the coil end is improved.Type: ApplicationFiled: January 14, 2003Publication date: July 24, 2003Applicant: DENSO CORPORATIONInventors: Masao Ichikawa, Yasunori Kitakado, Motohiro Murahashi, Kazuhiko Fukuda, Mitsuru Kato
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Publication number: 20030057088Abstract: A water electrolyte cell can be used with a high energy efficiency over a long period of time. The water electrolyte cell has a pair of catalytic layers and an electrolyte membrane sandwiched between the catalytic layers. The catalytic layers includes an anode catalytic layer which contains a catalyst comprising an alloy of ruthenium, iridium, and at least one metal selected from the group consisting of iron, nickel, and cobalt, or an oxide of the alloy, or a mixture of the alloy and an oxide thereof. The at least one metal has a molar ratio with respect to ruthenium and iridium in the range from 0.05 to 0.13 mol with respect to 0.8 to 2.2 mols, preferably 1.8 to 2.2 mols, of ruthenium and 0.8 to 1.2 mols of iridium. The electrolyte membrane comprises a solid polymer electrolyte membrane.Type: ApplicationFiled: September 20, 2002Publication date: March 27, 2003Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Masao Ichikawa, Kenta Urata, Katsutoshi Nosaki, Masanori Okabe