Patents by Inventor Takahiro Niwa
Takahiro Niwa 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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Publication number: 20240118043Abstract: A radiator support upper cover that covers an upper portion of a radiator is provided over the upper portion of the radiator. The radiator support upper cover includes a front cover member. The upper cover member covers a portion of the upper portion of the radiator on a vehicle front side. The front cover member is provided with a plurality of through holes penetrating the front cover member in a vehicle up-down direction. A through hole located on the vehicle rear side is formed at a position further on an upper side in the vehicle up-down direction than a through hole located on the vehicle front side.Type: ApplicationFiled: September 25, 2023Publication date: April 11, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takaharu NAGATOSHI, Hiroki NIWA, Haruki MITAMURA, Shotaro FUJIMORI, Takahiro IMAEDA
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Publication number: 20240033186Abstract: The present invention provides a zirconia sintered body that has high strength and is machinable. The present invention relates to a zirconia sintered body comprising zirconia, a stabilizing agent capable of preventing a phase transformation of zirconia, a sintering aid, and a needle-shaped metal oxide. Preferably, the sintering aid comprises niobium pentoxide, and the content of the niobium pentoxide is 5 to 15 parts by mass with respect to total 100 parts by mass of the zirconia and the stabilizing agent. Preferably, the stabilizing agent comprises yttria, and the content of the yttria is 2.5 to 10 mol % with respect to the total number of moles of the zirconia and the yttria.Type: ApplicationFiled: December 20, 2021Publication date: February 1, 2024Applicant: Kuraray Noritake Dental Inc.Inventor: Takahiro NIWA
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Publication number: 20230052915Abstract: A method that enables fabrication of a machinable zirconia composite sintered body that is machinable in a sintered state while maintaining properties suited for dental use, in a shorter time than it is possible with conventional methods. A method for producing a machinable zirconia composite sintered body by fabricating a molded body with a raw material composition that includes 78 to 95 mol % of ZrO2 and 2.5 to 10 mol % of Y2O3, and also includes 2 to 8 mol % of Nb2O5 and/or 3 to 10 mol % of Ta2O5, and in which ZrO2 predominantly includes a monoclinic crystal system and sintering the molded body.Type: ApplicationFiled: December 25, 2020Publication date: February 16, 2023Applicant: KURARAY NORITAKE DENTAL INC.Inventors: Shinichiro KATO, Yoshihisa ITO, Takahiro NIWA
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Patent number: 9593798Abstract: A novel pipe cover is disclosed that can suppress thermal deterioration in a member that is positioned opposite to the pipe, and can control the temperature inside the pipe within a given range, even when a high-temperature fluid circulates through the pipe. The pipe cover is used to cover the outer periphery of a pipe, and includes a base that is formed of a tubular heat insulator, and a surface member that covers the outer surface of the base, a heat radiation section and a heat radiation-suppressing section being provided on the outer surface of the surface member, and the emissivity of the heat radiation section at a wavelength of 2 to 15 ?m being higher than the emissivity of the heat radiation-suppressing section at a wavelength of 2 to 15 ?m.Type: GrantFiled: July 10, 2012Date of Patent: March 14, 2017Assignee: NICHIAS CORPORATIONInventors: Takahiro Niwa, Akinao Hiraoka, Yoshifumi Fujita, Keiji Tsukahara, Masatake Onodera, Daisuke Ando, Isami Abe
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Patent number: 9579813Abstract: Provided is a cutting apparatus 10 including a workpiece fixing jig 2 that supports a workpiece 1, rotates by operation of rotary drive means 3, and rotates the workpiece 1 while fixing the workpiece 1; rotary drive means 3 for driving and rotating the workpiece fixing jig 2; support means 4a to 4c for supporting the workpiece 1 while rotating along with rotation of the workpiece fixing jig 2; cutter knives 5a and 5b that cut the rotating workpiece 1 at least at axially opposite ends of the workpiece 1; and slide moving means 6 for slidably moving the cutter knives. The cutting apparatus 10 having a simple apparatus configuration does not produce chips as a result of cutting with small variations in size and with high planarity of cut surfaces.Type: GrantFiled: April 9, 2012Date of Patent: February 28, 2017Assignee: NICHIAS CORPORATIONInventors: Hidenobu Yamagishi, Takahiro Niwa, Masaki Yoshihara
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Patent number: 9261192Abstract: A cylinder head gasket includes two main members on two sides, and middle members sandwiched therebetween. The middle members are composed of a first middle member and a second middle member that is separated and distinct therefrom. The first middle member is a metal plate that has cylinder hole rim portions encircling cylinder holes to a particular width, with beads surrounding the cylinder holes being formed in the cylinder hole rim portions. The metal plate either forms separated items, one at each cylinder hole, or else forms an integrated item connected between the cylinder holes. The second middle member is a metal plate that is disposed on the outside of the first middle member and has oil holes and bolt holes. The thickness of the first middle member is greater than that of the second middle member.Type: GrantFiled: March 21, 2012Date of Patent: February 16, 2016Assignee: NICHIAS CORPORATIONInventors: Takahiro Niwa, Hironobu Imanaka, Takeshi Murata, Shinya Wasada
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Patent number: 9149851Abstract: The present invention relates to a metallic molded sheet including a metallic sheet having first ridges continuously formed along a first direction and second ridges continuously formed along a second direction which is perpendicular to the first direction, in which the metallic molded sheet has cross-sectional shapes along the first direction and the second direction, each having an identical thickness and continuing sinusoidally, and the metallic molded sheet has a planar shape being a corrugated surface in which ridge lines of first waveforms along the first direction and ridge lines of second waveforms along the second direction perpendicularly intersect each other.Type: GrantFiled: April 5, 2012Date of Patent: October 6, 2015Assignee: NICHIAS CORPORATIONInventors: Akinao Hiraoka, Motonori Kondoh, Tadakatsu Kato, Takahiro Niwa
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Patent number: 9093060Abstract: The present invention relates to a sound-proof material containing a first sound-absorbing material disposed facing a sound source, a first soft sound-insulating layer laminated on a face of the first sound-absorbing material opposite to the sound source and having an air permeability measured in accordance with JIS L1018 of 10 cc/cm2·sec or lower, a second sound-absorbing material laminated on the first soft sound-insulating layer, and a second soft sound-insulating layer laminated on the second sound-absorbing material and having an air permeability measured in accordance with JIS L1018 of 10 cc/cm2·sec or lower and a Young's modulus measured in accordance with JIS K7127 greater than or equal to five times that of the first soft sound-insulating layer, in which at least the second soft sound-insulating layer is partially or entirely bonded to the second sound-absorbing material.Type: GrantFiled: January 26, 2012Date of Patent: July 28, 2015Assignee: NICHIAS CORPORATIONInventors: Tadashi Mori, Takahiro Niwa, Masaki Yoshihara, Motonori Kondoh, Kaname Arimizu
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Patent number: 9068654Abstract: A gasket held between opposite flange joint surfaces with a bolt includes a combination of a complex material with a rubber material formed on one or both sides of a steel plate, the complex material having a convex or waveform bead, and a circular metal plate arranged at a bolt portion with a through-hole where a shank of the bolt penetrates and a bearing corresponding portion that corresponds to a bearing of the bolt around the through-hole. The gasket is configured to have the thickness (H3) of the bead provided to the complex material greater than the thickness (H2) of the circular metal plate that is equal to or greater than the thickness (H1) of the complex material. This structure provides a gasket indicating good sealing properties under such circumstances that a flange has low stiffness, a tightening load is reduced, and the distance between bolts is expanded.Type: GrantFiled: April 2, 2012Date of Patent: June 30, 2015Assignee: NICHIAS CORPORATIONInventors: Takahiro Niwa, Hironobu Imanaka, Takeshi Murata, Manabu Yasuda
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Publication number: 20140217682Abstract: A gasket held between opposite flange joint surfaces with a bolt includes a combination of a complex material with a rubber material formed on one or both sides of a steel plate, the complex material having a convex or waveform bead, and a circular metal plate arranged at a bolt portion with a through-hole where a shank of the bolt penetrates and a bearing corresponding portion that corresponds to a bearing of the bolt around the through-hole. The gasket is configured to have the thickness (H3) of the bead provided to the complex material greater than the thickness (H2) of the circular metal plate that is equal to or greater than the thickness (H1) of the complex material. This structure provides a gasket indicating good sealing properties under such circumstances that a flange has low stiffness, a tightening load is reduced, and the distance between bolts is expanded.Type: ApplicationFiled: April 2, 2012Publication date: August 7, 2014Applicant: NICHIAS CORPORATIONInventors: Takahiro Niwa, Hironobu Imanaka, Takeshi Murata, Manabu Yasuda
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Publication number: 20140144539Abstract: A novel pipe cover is disclosed that can suppress thermal deterioration in a member that is positioned opposite to the pipe, and can control the temperature inside the pipe within a given range, even when a high-temperature fluid circulates through the pipe. The pipe cover is used to cover the outer periphery of a pipe, and includes a base that is formed of a tubular heat insulator, and a surface member that covers the outer surface of the base, a heat radiation section and a heat radiation-suppressing section being provided on the outer surface of the surface member, and the emissivity of the heat radiation section at a wavelength of 2 to 15 ?m being higher than the emissivity of the heat radiation-suppressing section at a wavelength of 2 to 15 ?m.Type: ApplicationFiled: July 10, 2012Publication date: May 29, 2014Applicant: NICHIAS CORPORATIONInventors: Takahiro Niwa, Akinao Hiraoka, Yoshifumi Fujita, Keiji Tsukahara, Masatake Onodera, Daisuke Andoo, Isami Abe
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Publication number: 20140123849Abstract: A cylinder head gasket includes two main members on two sides, and middle members sandwiched therebetween. The middle members are composed of a first middle member and a second middle member that is separated and distinct therefrom. The first middle member is a metal plate that has cylinder hole rim portions encircling cylinder holes to a particular width, with beads surrounding the cylinder holes being formed in the cylinder hole rim portions. The metal plate either forms separated items, one at each cylinder hole, or else forms an integrated item connected between the cylinder holes. The second middle member is a metal plate that is disposed on the outside of the first middle member and has oil holes and bolt holes. The thickness of the first middle member is greater than that of the second middle member.Type: ApplicationFiled: March 21, 2012Publication date: May 8, 2014Applicant: NICHIAS CORPORATIONInventors: Takahiro Niwa, Hironobu Imanaka, Takeshi Murata, Shinya Wasada
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Publication number: 20140076116Abstract: Provided is a cutting apparatus 10 including a workpiece fixing jig 2 that supports a workpiece 1, rotates by operation of rotary drive means 3, and rotates the workpiece 1 while fixing the workpiece 1; rotary drive means 3 for driving and rotating the workpiece fixing jig 2; support means 4a to 4c for supporting the workpiece 1 while rotating along with rotation of the workpiece fixing jig 2; cutter knives 5a and 5b that cut the rotating workpiece 1 at least at axially opposite ends of the workpiece 1; and slide moving means 6 for slidably moving the cutter knives. The cutting apparatus 10 having a simple apparatus configuration does not produce chips as a result of cutting with small variations in size and with high planarity of cut surfaces.Type: ApplicationFiled: April 9, 2012Publication date: March 20, 2014Applicant: NICHIAS CORPORATIONInventors: Hidenobu Yamagishi, Takahiro Niwa, Masaki Yoshihara
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Publication number: 20140027200Abstract: The present invention relates to a sound-proof material containing a first sound-absorbing material disposed facing a sound source, a first soft sound-insulating layer laminated on a face of the first sound-absorbing material opposite to the sound source and having an air permeability measured in accordance with JIS L1018 of 10 cc/cm2·sec or lower, a second sound-absorbing material laminated on the first soft sound-insulating layer, and a second soft sound-insulating layer laminated on the second sound-absorbing material and having an air permeability measured in accordance with JIS L1018 of 10 cc/cm2·sec or lower and a Young's modulus measured in accordance with JIS K7127 greater than or equal to five times that of the first soft sound-insulating layer, in which at least the second soft sound-insulating layer is partially or entirely bonded to the second sound-absorbing material.Type: ApplicationFiled: January 26, 2012Publication date: January 30, 2014Applicant: NICHIAS CORPORATIONInventors: Tadashi Mori, Takahiro Niwa, Masaki Yoshihara, Motonori Kondoh, Kaname Arimizu
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Publication number: 20120192610Abstract: The present invention relates to a metallic molded sheet including a metallic sheet having first ridges continuously formed along a first direction and second ridges continuously formed along a second direction which is perpendicular to the first direction, in which the metallic molded sheet has cross-sectional shapes along the first direction and the second direction, each having an identical thickness and continuing sinusoidally, and the metallic molded sheet has a planar shape being a corrugated surface in which ridge lines of first waveforms along the first direction and ridge lines of second waveforms along the second direction perpendicularly intersect each other.Type: ApplicationFiled: April 5, 2012Publication date: August 2, 2012Applicant: Nichias CorporationInventors: Akinao Hiraoka, Motonori Kondoh, Tadakatsu Kato, Takahiro Niwa
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Patent number: 8061475Abstract: The present invention relates to a soundproof cover containing: a sound-absorbing material disposed facing to a sound source; a soft sound-insulating layer laminated on the sound-absorbing material and having an air permeability measured according to JIS L 1018 (1999) of 10 cc/cm2·sec or less; and a soft cover forming an air layer with the soft sound-insulating layer and having a Young's modulus measured according to JIS K 7127 (1999) of 0.2 to 1.5 GPa, in which the air layer is hermetically sealed.Type: GrantFiled: September 17, 2010Date of Patent: November 22, 2011Assignee: Nichias CorporationInventors: Tadashi Mori, Motonori Kondoh, Kaname Arimizu, Takahiro Niwa, Masaki Yoshihara
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Patent number: 8028801Abstract: The present invention provides a soundproof cover comprising: a sound-absorbing material having air permeability; and a skin material impregnated with a viscoelastic material and having air permeability, wherein the skin material is provided on a surface of the sound-absorbing material opposite to a sound source, and wherein the soundproof cover has a three-dimensional shape corresponding to an outer shape of the sound source.Type: GrantFiled: March 28, 2008Date of Patent: October 4, 2011Assignee: Nichias CorporationInventors: Takahiro Niwa, Michihiro Inagaki, Akinao Hiraoka, Motonori Kondoh, Tadashi Mori
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Patent number: 7963363Abstract: The present invention relates to a soundproof cover for automobiles, the soundproof cover including: a cover body formed of a metal or a resin; and a sound-absorbing material disposed opposite to a sound source, in which the sound-absorbing material has a soft sound-insulating layer on a surface side thereof facing the cover body, the sound-absorbing material is disposed apart from the cover body, and the sound-absorbing material has a peripheral edge that contacts with an inner wall of an edge of the cover body.Type: GrantFiled: August 7, 2009Date of Patent: June 21, 2011Assignee: Nichias CorporationInventors: Takahiro Niwa, Motonori Kondoh, Tadashi Mori
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Publication number: 20110067949Abstract: The present invention relates to a soundproof cover containing: a sound-absorbing material disposed facing to a sound source; a soft sound-insulating layer laminated on the sound-absorbing material and having an air permeability measured according to JIS L 1018 (1999) of 10 cc/cm2·sec or less; and a soft cover forming an air layer with the soft sound-insulating layer and having a Young's modulus measured according to JIS K 7127 (1999) of 0.2 to 1.5 GPa, in which the air layer is hermetically sealed.Type: ApplicationFiled: September 17, 2010Publication date: March 24, 2011Inventors: Tadashi Mori, Motonori Kondoh, Kaname Arimizu, Takahiro Niwa, Masaki Yoshihara
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Publication number: 20110041945Abstract: The present invention relates to an automotive exhaust pipe including: an exhaust pipe main body; and a metallic cylindrical body being inserted inside the exhaust pipe main body, having openings at an open area ratio of 95% or smaller, and having a thickness of 3 mm or smaller.Type: ApplicationFiled: August 20, 2010Publication date: February 24, 2011Inventors: Takahiro Ohmura, Masatake Onodera, Takahiro Niwa, Toshihiko Kumasaka, Akinao Hiraoka