Patents by Inventor Hidekazu Hattori
Hidekazu Hattori 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: 11981259Abstract: A sound generation device for a vehicle, the sound generation device being installed in a vehicle which travels using an electric-powered motor as a power source, includes a sound control apparatus which sets a plurality of frequencies corresponding to a motor rotation speed and generates a synthetic sound signal indicating a synthetic sound including sounds at the plurality of frequencies and a speaker which outputs the synthetic sound based on the synthetic sound signal generated by the sound control apparatus, and the sound control apparatus sets an increase amount of an output of a sound in a low frequency band large compared to an increase amount of an output of a sound in a high frequency band in a frequency range of the synthetic sound in accordance with an increase in a motor torque value.Type: GrantFiled: August 12, 2020Date of Patent: May 14, 2024Assignee: Mazda Motor CorporationInventors: Yukifusa Hattori, Seisuke Mitsunaga, Hidekazu Shiraishi, Katsuya Shimizu, Ryuichi Yamada, Chieko Nakagami
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Patent number: 10862154Abstract: A fuel cell stack includes a fuel cell, a first gas flow path, a second gas flow path, a pressing member, and a cell supporting member. The first gas flow path is provided on a first cell surface side of the fuel cell. The second gas flow path is provided on a second cell surface side of the fuel cell. The pressing member is disposed in the first gas flow path, and presses the first cell surface of the fuel cell. The cell supporting member is disposed in the second gas flow path, and supports the second cell surface of the fuel cell that is pressed by the pressing member.Type: GrantFiled: January 23, 2018Date of Patent: December 8, 2020Assignee: DENSO CORPORATIONInventors: Hidekazu Hattori, Shinichi Sugihara
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Publication number: 20180219244Abstract: A fuel cell stack includes a fuel cell, a first gas flow path, a second gas flow path, a pressing member, and a cell supporting member. The first gas flow path is provided on a first cell surface side of the fuel cell. The second gas flow path is provided on a second cell surface side of the fuel cell. The pressing member is disposed in the first gas flow path, and presses the first cell surface of the fuel cell. The cell supporting member is disposed in the second gas flow path, and supports the second cell surface of the fuel cell that is pressed by the pressing member.Type: ApplicationFiled: January 23, 2018Publication date: August 2, 2018Applicant: DENSO CORPORATIONInventors: Hidekazu HATTORI, Shinichi SUGIHARA
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Patent number: 7468112Abstract: A high reliability ceramic laminate suppresses delamination and cracks. Wide ceramic sheets are temporarily laminated by heat and pressure to form a pre-laminate which is cut to form a unit body. Unit bodies are laminated to obtain a ceramic laminate. Dewaxing removes not less than 90% of a binder resin before the ceramic laminate is sintered.Type: GrantFiled: April 17, 2002Date of Patent: December 23, 2008Assignee: Denso CorporationInventors: Kazuhide Sato, Hidekazu Hattori, Ikuo Ito, Syouichi Takenouchi, Toshiaki Kamiya
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Patent number: 7439655Abstract: A laminated-type piezoelectric element 1 is provided, which comprises a first external electrode layer 33, which is located at a side area of the laminated-type piezoelectric element 1, is electrically continuous to internal electrode layers 21, and comprises plural expansible and contractible opening portions 33a in a stacking direction of the laminated-type piezoelectric element 1. As the first external electrode layer 33 is connected to the laminated-type piezoelectric element 1 with an electrically conductive adhesive member 32 and the electrically conductive adhesive member 32 is narrower than the first external electrode layer 33, the electrically conductive adhesive member 32 penetrates into the opening portions 33a of the first external electrode layer 33 to form connections in a shape of an anchor. Therefore, the first external electrode layer 33 is firmly connected to the laminated-type piezoelectric element 1.Type: GrantFiled: April 18, 2006Date of Patent: October 21, 2008Assignee: Denso CorporationInventors: Hiroaki Asano, Hidekazu Hattori, Yoichi Kobane
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Patent number: 7339310Abstract: A laminated piezoelectric element (1) comprises a laminated piezoelectric element (1) piezoelectric layers (11) composed of a ceramic capable of expanding and contracting upon application of a voltage, and internal electrode layers (21a and 21b) that supply voltage to the piezoelectric layers, the internal electrode layers and piezoelectric layers being alternately provided, a first external electrode layer (31) provided on a side of the laminated piezoelectric element (1) and electrically connected with the internal electrode layers (21a and 21b), and a second external electrode layer (32) provided on a side of the laminated piezoelectric element (1) and electrically connected with the internal electrode layers (21a and 21b) via the first ecternal electrode layer wherein there are specific external electrode width relationships.Type: GrantFiled: April 18, 2006Date of Patent: March 4, 2008Assignee: Denso CorporationInventors: Yoichi Kobane, Hiroaki Asano, Hidekazu Hattori
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Patent number: 7326309Abstract: This invention provides a method of producing a ceramic laminate body capable of suppressing the occurrence of de-lamination and cracks, and providing high reliability. This method comprises a heat-bonding step of covering a full periphery of side surfaces of ceramic layers 11 positioned in an orthogonal direction to a laminating direction with a side surface jig while the ceramic layers are laminated, heating the ceramic layers and pressing the ceramic layers from both end faces positioned in the laminating direction by end face jigs to form a heat-bonded ceramic laminate body; and a side surface grinding step of grinding or cutting the full periphery of the side surfaces inclusive of damage portions 9 occurring in the ceramic laminate body in the heat-bonding step.Type: GrantFiled: April 10, 2002Date of Patent: February 5, 2008Assignee: Denso CorporationInventors: Kazuhide Sato, Hidekazu Hattori, Toshiaki Kamiya, Osamu Inoue
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Publication number: 20060232172Abstract: A laminated-type piezoelectric element 1 is provided, which comprises a first external electrode layer 33, which is located at a side area of the laminated-type piezoelectric element 1, is electrically continuous to internal electrode layers 21, and comprises plural expansible and contractible opening portions 33a in a stacking direction of the laminated-type piezoelectric element 1. As the first external electrode layer 33 is connected to the laminated-type piezoelectric element 1 with an electrically conductive adhesive member 32 and the electrically conductive adhesive member 32 is narrower than the first external electrode layer 33, the electrically conductive adhesive member 32 penetrates into the opening portions 33a of the first external electrode layer 33 to form connections in a shape of an anchor. Therefore, the first external electrode layer 33 is firmly connected to the laminated-type piezoelectric element 1.Type: ApplicationFiled: April 18, 2006Publication date: October 19, 2006Applicant: DENSO CORPORATIONInventors: Hiroaki Asano, Hidekazu Hattori, Yoichi Kobane
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Publication number: 20060232173Abstract: A laminated piezoelectric element (1) comprises a laminated piezoelectric element (1) piezoelectric layers (11) composed of a ceramic capable of expanding and contracting upon application of a voltage, and internal electrode layers (21a and 21b) that supply voltage to the piezoelectric layers, the internal electrode layers and piezoelectric layers being alternately provided, a first external electrode layer (31) provided on a side of the laminated piezoelectric element (1) and electrically connected with the internal electrode layers (21a and 21b), and a second external electrode layer (32) provided on a side of the laminated piezoelectric element (1) and electrically connected with the internal electrode layers (21a and 21b) via the first external electrode layer (31); wherein, when the maximum width of the laminated piezoelectric element (1) in the direction perpendicular to the direction of lamination is taken to be W0, the width of the first external electrode layer (31) is taken to be W1, and the width oType: ApplicationFiled: April 18, 2006Publication date: October 19, 2006Applicant: DENSO CORPORATIONInventors: Yoichi Kobane, Hiroaki Asano, Hidekazu Hattori
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Patent number: 7067960Abstract: A piezoelectric device for an injector is built into an injector and generates driving force of the injector. A relation d(0.1Ec)/d(1.2Ec)?0.50 is established between an apparent piezoelectric constant d(1.2Ec) calculated from static elongation when an electric field of 1.2 Ec is applied to the piezoelectric device in the same direction as a polarizing direction while a preset load of 500 N is applied to the piezoelectric device, and an apparent piezoelectric constant d(0.1Ec) calculated from static elongation when an electric field of 0.1 Ec is applied to the piezoelectric device in the same direction as the polarizing direction. The piezoelectric device so fabricated has high durability and can be used for a long time.Type: GrantFiled: October 7, 2004Date of Patent: June 27, 2006Assignee: DENSO CorporationInventors: Masayuki Kobayashi, Hidekazu Hattori
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Patent number: 6873089Abstract: A piezoelectric device for an injector is built into an injector and generates driving force of the injector. A relation d(0.1Ec)/d(1.2Ec)?0.50 is established between an apparent piezoelectric constant d(1.2Ec) calculated from static elongation when an electric field of 1.2Ec is applied to the piezoelectric device in the same direction as a polarizing direction while a preset load of 500 N is applied to the piezoelectric device, and an apparent piezoelectric constant d(0.1Ec) calculated from static elongation when an electric field of 0.1 Ec is applied to the piezoelectric device in the same direction as the polarizing direction. The piezoelectric device so fabricated has high durability and can be used for a long time.Type: GrantFiled: December 10, 2003Date of Patent: March 29, 2005Assignee: Denso CorporationInventors: Masayuki Kobayashi, Hidekazu Hattori
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Publication number: 20050046310Abstract: A piezoelectric device 1 for an injector, built into an injector and generating driving force of the injector, wherein a relation d(0.1 Ec)/d(1.2 Ec)?0.50 is established between an apparent piezoelectric constant d(1.2 Ec) calculated from static elongation when an electric field of 1.2 Ec is applied to the piezoelectric device in the same direction as a polarizing direction while a preset load of 500 N is applied to the piezoelectric device, and an apparent piezoelectric constant d(0.1 Ec) calculated from-static elongation when an electric field of 0.1 Ec is applied to the piezoelectric device in the same direction as the polarizing direction. The piezoelectric device so fabricated has high durability and can be used for a long time.Type: ApplicationFiled: October 7, 2004Publication date: March 3, 2005Applicant: Denso CorporationInventors: Masayuki Kobayashi, Hidekazu Hattori
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Patent number: 6787975Abstract: A piezoelectric device 1 for an injector, built into an injector and generating driving force of the injector, wherein a relation d(0.1 Ec)/d(1.2 Ec)≧0.50 is established between an apparent piezoelectric constant d(1.2 Ec) calculated from static elongation when an electric field of 1.2 Ec is applied to the piezoelectric device in the same direction as a polarizing direction while a preset load of 500 N is applied to the piezoelectric device, and an apparent piezoelectric constant d(0.1 Ec) calculated from static elongation when an electric field of 0.1 Ec is applied to the piezoelectric device in the same direction as the polarizing direction. The piezoelectric device so fabricated has high durability and can be used for a long time.Type: GrantFiled: May 30, 2001Date of Patent: September 7, 2004Assignee: Denso CorporationInventors: Masayuki Kobayashi, Shinya Mitarai, Takashi Yamamoto, Hidekazu Hattori
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Publication number: 20040113527Abstract: A piezoelectric device 1 for an injector, built into an injector and generating driving force of the injector, wherein a relation d(0.1 Ec)/d(1.2 Ec)≧0.50 is established between an apparent piezoelectric constant d(1.2 Ec) calculated from static elongation when an electric field of 1.2 Ec is applied to the piezoelectric device in the same direction as a polarizing direction while a preset load of 500 N is applied to the piezoelectric device, and an apparent piezoelectric constant d(0.1 Ec) calculated from static elongation when an electric field of 0.1 Ec is applied to the piezoelectric device in the same direction as the polarizing direction. The piezoelectric device so fabricated has high durability and can be used for a long time.Type: ApplicationFiled: December 10, 2003Publication date: June 17, 2004Applicant: Denso CorporationInventors: Masayuki Kobayashi, Hidekazu Hattori
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Patent number: 6483611Abstract: There is provided a hologram with excellent heat resistance. The hologram comprises a hologram film (10) in which a diffraction grating has been recorder, a substrated (11) situated on one side of the hologram film (10) via a bonding material (13), and a polymer film (12) situated on the other side of the hologram film (10) via a bonding material (13), wherein the thickness of the polymer film (12) is no greater than 100 &mgr;m. Otherwise, the polymer film (12) is subjected to prior heat treatment. There is further provided a production process for holograms with minimal appearance defects.Type: GrantFiled: May 4, 2000Date of Patent: November 19, 2002Assignee: Denso CorporationInventors: Yasuhiro Mizutani, Hidekazu Hattori, Satoru Kadowaki, Kazutaka Suzuki
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Publication number: 20020157756Abstract: This invention provides a method of producing a ceramic laminate body capable of suppressing the occurrence of de-lamination and cracks, and providing high reliability. This method comprises a heat-bonding step of covering a full periphery of side surfaces of ceramic layers 11 positioned in an orthogonal direction to a laminating direction with a side surface jig while the ceramic layers are laminated, heating the ceramic layers and pressing the ceramic layers from both end faces positioned in the laminating direction by end face jigs to form a heat-bonded ceramic laminate body; and a side surface grinding step of grinding or cutting the full periphery of the side surfaces inclusive of damage portions 9 occurring in the ceramic laminate body in the heat-bonding step.Type: ApplicationFiled: April 10, 2002Publication date: October 31, 2002Inventors: Kazuhide Sato, Hidekazu Hattori, Toshiaki Kamiya, Osamu Inoue
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Publication number: 20020152857Abstract: A high reliability ceramic laminate suppresses delamination and cracks. Wide ceramic sheets are temporarily laminated by heat and pressure to form a pre-laminate which is cut to form a unit body. Unit bodies are laminated to obtain a ceramic laminate. Dewaxing removes not less than 90% of a binder resin before the ceramic laminate is sintered.Type: ApplicationFiled: April 17, 2002Publication date: October 24, 2002Inventors: Kazuhide Sato, Hidekazu Hattori, Ikuo Ito, Syouichi Takenouchi, Toshiaki Kamiya
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Publication number: 20020005680Abstract: A piezoelectric device 1 for an injector, built into an injector and generating driving force of the injector, wherein a relation d(0.1 Ec)/d(1.2 Ec)≧0.50 is established between an apparent piezoelectric constant d(1.2 Ec) calculated from static elongation when an electric field of 1.2 Ec is applied to the piezoelectric device in the same direction as a polarizing direction while a preset load of 500 N is applied to the piezoelectric device, and an apparent piezoelectric constant d(0.1 Ec) calculated from static elongation when an electric field of 0.1 Ec is applied to the piezoelectric device in the same direction as the polarizing direction. The piezoelectric device so fabricated has high durability and can be used for a long time.Type: ApplicationFiled: May 30, 2001Publication date: January 17, 2002Inventors: Masayuki Kobayashi, Shinya Mitarai, Takashi Yamamoto, Hidekazu Hattori
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Patent number: 6330087Abstract: A hologram of an increased size using a single color laser, capable of executing a full color regeneration in a desired view angle and a method for producing the hologram. A plurality of photo-sensitive members are independently exposed to obtain respective holograms, which are connected by using an adhesive layer 80 constructing a connecting means, in order to obtain an integrated hologram expanded in two-dimensional direction. The holograms are obtained by an interference of a reference light 22 and an object light passed through a light diffusing body 24 in order to cause the light diffusing body 24 to be recorded on the photo-sensitive member. The size of the light diffusing body 24 is such that the spectral characteristic of the diffused light from the hologram can attain a desired efficiency at least over the entire wavelength range of the visible light.Type: GrantFiled: July 14, 2000Date of Patent: December 11, 2001Assignee: Denso CorporationInventors: Hidekazu Hattori, Kenichiro Takada, Katsuyoshi Nishii, Tooru Matsumoto, Tomoyuki Kanda
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Patent number: 6317227Abstract: A hologram has a hologram element 3 containing a photopolymer and a cover film 22 and cover plate 21 which cover its surfaces. An adhesive 1 is used for bonding the cover film to the hologram element and the cover plate to the hologram element. The hologram has excellent humidity resistance, chemical resistance, solvent resistance and heat resistance, prevents coloration, can maintain its holographic properties and allows easy repositioning of the hologram element.Type: GrantFiled: December 30, 1999Date of Patent: November 13, 2001Assignee: Denso CorporationInventors: Yasuhiro Mizutani, Naoyuki Kawazoe, Hidekazu Hattori