Patents by Inventor Kazuo Ohara
Kazuo Ohara 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: 7396786Abstract: A glass containing 5 to 25 mass % of P2O5, 0 to 15 mass % of B2O3, 0 to 5 mass % of SiO2+GeO2, 21 to 50 mass % of BaO+SrO, 0 to 3 mass % of Li2O+Na2O+K2O, and 35 to 65 mass % of Nb2O5, not substantially containing PbO, satisfying Nb2O5/(BaO+SrO)=0.85 to 2.20, having a dielectric constant of 15 or greater, a dielectric loss of 10.0×10?4 or less, and a resistivity of 1.0×1016 ?·cm or more.Type: GrantFiled: January 22, 2003Date of Patent: July 8, 2008Assignee: Kabushiki Kaisha OharaInventors: Masaaki Miyata, Kazuo Ohara
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Patent number: 7306879Abstract: A lithium ion secondary cell comprises a positive electrode, a negative electrode, a solid electrolyte and a fiber layer provided in an interface between the solid electrolyte and the positive electrode and/or in an interface between the solid electrolyte and the negative electrode.Type: GrantFiled: May 27, 2003Date of Patent: December 11, 2007Assignee: Kabushiki Kaisha OharaInventors: Yasushi Inda, Kazuo Ohara, Tetsuo Uchiyama, Morinobu Endo
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Publication number: 20070259270Abstract: A lithium ion secondary cell comprises a positive electrode, a negative electrode, a solid electrolyte and a fiber layer provided in an interface between the solid electrolyte and the positive electrode and/or in an interface between the solid electrolyte and the negative electrode.Type: ApplicationFiled: June 6, 2007Publication date: November 8, 2007Applicant: Kabushiki Kaisha OharaInventors: Yasushi Inda, Kazuo Ohara, Tetsuo Uchiyama, Morinobu Endo
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Patent number: 7148164Abstract: There are provided low expansion transparent glass-ceramics obtained by heat treating a base glass produced at a relatively low melting temperature of 1530° C. or below. The glass-ceramics have an average linear thermal expansion coefficient within a range from +6×10?7/° C. to +35×10?7/° C., 80% transmittance wavelength (T80) of 700 nm or below, internal transmittance of 75% or over at light wavelength of 1550 nm, heat resisting temperature of 800° C. or over and Young's modulus of 90 GPa or over. The glass-ceramics comprise SiO2, Al2O3, MgO, CaO, BaO, ZnO, Li2O, TiO2 and ZrO2 and contain ?-quartz or ?-quartz solid solution as a predominant crystal phase. There are also provided optical waveguide elements and an arrayed waveguide grating (AWG) type planar lightwave circuit utilizing these glass-ceramics.Type: GrantFiled: April 24, 2001Date of Patent: December 12, 2006Assignee: Kabushiki Kaisha OharaInventors: Hiroyuki Minamikawa, Kazuo Ohara, Naoyuki Goto
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Patent number: 7071132Abstract: There are provided low expansion transparent glass-ceramics obtained by heat treating a base glass produced at a relatively low melting temperature of 1530° C. or below. The glass-ceramics have an average linear thermal expansion coefficient within a range from +6×10?7/° C. to +35×10?7/° C., 80% transmittance wavelength (T80) of 700 nm or below internal transmittance of 75% or over at light wavelength of 1550 nm, heat resisting temperature of 800° C. or over and Young's modulus of 90 GPa or over. The glass-ceramics comprise SiO2, Al2O3, MgO, CaO, BaO, ZnO, Li2O, TiO2 and ZrO2 and contain ?-quartz or ?-quartz solid solution as a predominant crystal phase.Type: GrantFiled: December 2, 2003Date of Patent: July 4, 2006Assignee: Kabushiki Kaisha OharaInventors: Hiroyuki Minamikawa, Kazuo Ohara, Naoyuki Goto
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Publication number: 20050113239Abstract: A glass containing 5 to 25 mass % of P2O5, 0 to 15 mass % of B2O3, 0 to 5 mass % of SiO2+GeO2, 21 to 50 mass % of BaO+SrO, 0 to 3 mass % of Li2O+Na2O+K20, and 35 to 65 mass % of Nb2O5, not substantially containing PbO, satisfying Nb2O5/(BaO+SrO)=0.85 to 2.20, having a dielectric constant of 15 or greater, a dielectric loss of 10.0×10?4 or less, and a resistivity of 1.0×1016 ?·cm or more.Type: ApplicationFiled: January 22, 2003Publication date: May 26, 2005Applicant: KABUSHIKI KAISHA OHARAInventors: Masaaki Miyata, Kazuo Ohara
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Publication number: 20040121893Abstract: There are provided low expansion transparent glass-ceramics obtained by heat treating a base glass produced at a relatively low melting temperature of 1530° C. or below. The glass-ceramics have an average linear thermal expansion coefficient within a range from +6×10−7/° C. to +35×10−7/° C., 80% transmittance wavelength (T80) of 700 nm or below internal transmittance of 75% or over at light wavelength of 1550 nm, heat resisting temperature of 800° C. or over and Young's modulus of 90 GPa or over. The glass-ceramics comprise SiO2, Al2O3, MgO, CaO, BaO, ZnO, Li2O, TiO2 and ZrO2 and contain &bgr;-quartz or &bgr;-quartz solid solution as a predominant crystal phase.Type: ApplicationFiled: December 2, 2003Publication date: June 24, 2004Inventors: Hiroyuki Minamikawa, Kazuo Ohara, Naoyuki Goto
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Publication number: 20030224244Abstract: A lithium ion secondary cell comprises a positive electrode, a negative electrode, a solid electrolyte and a fiber layer provided in an interface between the solid electrolyte and the positive electrode and/or in an interface between the solid electrolyte and the negative electrode.Type: ApplicationFiled: May 27, 2003Publication date: December 4, 2003Inventors: Yasushi Inda, Kazuo Ohara, Tetsuo Uchiyama, Morinobu Endo
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Patent number: 6475677Abstract: There is provided a glass-ceramic composite electrolyte including a medium containing glass-ceramic powder impregnated with a non-aqueous electrolytic solution. There is also provided a lithium secondary cell having a positive electrode, a negative electrode and a separator in which the separator includes the above described composite electrolyte. The glass-ceramic powder consists of grains having an average grain diameter of 20 &mgr;m or below (calculated on the basis of volume), a maximum grain diameter of 44 &mgr;m or below and lithium ion conductivity of 1×10−4S·cm−1 or over. The glass-ceramic composite electrolyte has thickness of 100 &mgr;m or below and lithium ion conductivity of 1×10−5S·cm−1 or over.Type: GrantFiled: April 25, 2000Date of Patent: November 5, 2002Assignee: Kabushiki Kaisha OharaInventors: Yasushi Inda, Kazuo Ohara
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Publication number: 20020022564Abstract: There are provided low expansion transparent glass-ceramics obtained by heat treating a base glass produced at a relatively low melting temperature of 1530° C. or below. The glass-ceramics have an average linear thermal expansion coefficient within a range from +6×10−7/° C. to +35×10−7/° C., 80% transmittance wavelength (T80) of 700 nm or below, internal transmittance of 75% or over at light wavelength of 1550 nm, heat resisting temperature of 800° C. or over and Young's modulus of 90 GPa or over. The glass-ceramics comprise SiO2, Al2O3, MgO, CaO, BaO, ZnO, Li2O, TiO2 and ZrO2 and contain &bgr;-quartz or &bgr;-quartz solid solution as a predominant crystal phase. There are also provided optical waveguide elements and an arrayed waveguide grating (AWG) type planar lightwave circuit utilizing these glass-ceramics.Type: ApplicationFiled: April 24, 2001Publication date: February 21, 2002Inventors: Hiroyuki Minamikawa, Kazuo Ohara, Naoyuki Goto
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Patent number: 6300264Abstract: A luminous glass comprising, in percent by weight, the following components: SiO2 46-66 Al2O3 18-30 MgO 0-12 CaO 0-16 ZnO 0-21 P2O5 0-10 Li2O 0-8 BaO 0-9 As2O3 + Sb2O3 0-2 wherein a ratio of Al2O3 to SiO2 is 0.32-0.56, a total amount of MgO, CaO, and ZnO is 2-34 wt. %, a total amount of P2O5, Li2O, and BaO is 0-21 wt. %, and one or more rare earth elements are added to the glass on an oxide basis of 0.1-30 wt. % to an total amount of the components, PbO, B2O3, BeO, Na2O, and K2O are not essentially contained, and the glass has a thermal shock resistance |&Dgr;t|° C. of not less than 150, which is obtained by following equation, |&Dgr;t|=[flexural strength]×(1−[Poisson's ratio])/([coefficient of thermal expansion]×[Young's modulus]).Type: GrantFiled: February 8, 1999Date of Patent: October 9, 2001Assignee: Kabushiki Kaisha OharaInventor: Kazuo Ohara
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Patent number: 5708233Abstract: A thermoelectric semiconductor material is used for thermoelectric conversion in a thermoelectric conversion device. The material comprises a double oxide having one of a normal spinel crystal structure and an inverse spinel crystal structure, the double oxide comprising a composition that is represented by MIn.sub.2 O.sub.4, wherein M represents a metal element that can be changed into a divalent ion.Type: GrantFiled: July 29, 1996Date of Patent: January 13, 1998Assignee: Kabushiki Kaisha OharaInventors: Yasuo Ochi, Kazuo Ohara
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Patent number: 5578864Abstract: A thermoelectric semiconductor material is disclosed. The material comprises a double oxide which contains antimony and has a trirutile crystal structure.Type: GrantFiled: August 14, 1995Date of Patent: November 26, 1996Assignee: Kabushiki Kaisha OharaInventors: Yasuo Ochi, Kazuo Ohara
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Patent number: 4143562Abstract: Speed change gears of the planetary gear type suited for applications within fluid couplings used upon automotive vehicles includes an input shaft, a first clutch for releasing or coupling a second ring gear and a third sun gear simultaneously from or to the input shaft, a second clutch for releasing or coupling a first sun gear and a second sun gear simultaneously from or to the input shaft, a first planetary gear engaged with the first sun gear, a first ring gear engaging the first planetary gear, a first carrier rotatably supporting the first planetary gear, a second planetary gear engaged with the second sun gear and the second ring gear, a second carrier rotatably supporting the second planetary gear, a third planetary gear enmeshed with the third sun gear, a third ring gear interengaged with the third planetary gear and coupled to the first ring gear, a third carrier rotatably supporting the third planetary gear and coupled to the second carrier and to an output shaft, a first brake capable of locking tType: GrantFiled: February 2, 1976Date of Patent: March 13, 1979Assignee: Aisin Seiki Kabushiki KaishaInventors: Noboru Murakami, Koichiro Hirosawa, Kazuo Ohara, Koichi Matsuo
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Patent number: 4089239Abstract: A speed change gear system for providing at least four forward drive speed ranges and one reverse drive speed range includes three planetary gear sets of the single-pinion type, three clutches, and two brakes. As a result of the coupling and uncoupling of the clutches and brakes, the movable elements of each of the planetary gear sets are suitably coupled so as to attain the various speed ranges.Type: GrantFiled: January 22, 1976Date of Patent: May 16, 1978Assignee: Aisin Seiki Kabushiki KaishaInventors: Noboru Murakami, Koichiro Hirosawa, Kazuo Ohara, Koichi Matsuo
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Patent number: 4038888Abstract: A speed change gear system for providing at least four forward drive speed ranges and one reverse drive speed range includes planetary gear sets of the single-pinion type and simple planetary gear sets of the double-pinion type as well as a plurality of clutches and brakes. As a result of the coupling and uncoupling of the clutches and brakes, the movable elements of the gear sets are suitably coupled so as to attain the various speed ranges.Type: GrantFiled: December 24, 1975Date of Patent: August 2, 1977Assignee: Aisin Seiki Kabushiki KaishaInventors: Noboru Murakami, Koichi Matsuo, Koichiro Hirosawa, Kazuo Ohara
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Patent number: 4038887Abstract: A speed change gear system of the planetary type suited for applications to fluid couplings utilized upon automotive vehicles includes at least first, second, and third planetary gear sets suitably interposed between an input shaft and an output shaft, first and second clutches, and first, second, and third braking means.Type: GrantFiled: December 24, 1975Date of Patent: August 2, 1977Assignee: Aisin Seiki Kabushiki KaishaInventors: Noboru Murakami, Koichiro Hirosawa, Kazuo Ohara, Koichi Matsuo
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Patent number: 4027551Abstract: A speed change gear system of the planetary gear type suited for applications within fluid couplings used upon automobiles includes three simple planetary gear sets of the single pinion type and the double pinion type, three clutch units, and at least two brake units. The movable members of the three planetary gear sets are suitably coupled to each other, and the brake units are suitably locked and unlocked so as to attain the desired speed ranges, that is, at least four forward drive speeds and at least one reverse drive speed.Type: GrantFiled: May 27, 1975Date of Patent: June 7, 1977Assignee: Aisin Seiki Kabushiki KaishaInventors: Noboru Murakami, Koichiro Hirosawa, Kazuo Ohara, Koichi Matsuo
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Patent number: 4027552Abstract: A speed change gear system of the planetary gear type suited for applications within fluid couplings used upon automobiles includes three simple planetary gear sets of the single pinion type and the double pinion type, two clutch units, and three brake units. The movable members of the three planetary gear sets are suitably coupled to each other, and the brake units are suitably locked and unlocked so as to attain the desired speed ranges, that is, at least four forward drive speeds and at least one reverse drive speed.Type: GrantFiled: April 22, 1975Date of Patent: June 7, 1977Assignee: Aisin Seiki Kabushiki KaishaInventors: Noboru Murakami, Koichiro Hirosawa, Kazuo Ohara, Koichi Matsuo
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Patent number: 3971267Abstract: A speed change gear system for providing at least four forward drive speed ranges and one reverse drive speed range includes two planetary gear sets of the single-pinion type and one planetary gear set of the double-pinion type, two clutches, and three brakes. As a result of the coupling and uncoupling of the clutches and brakes, the movable elements of each of the planetary gear sets are suitably coupled so as to attain the various speed ranges.Type: GrantFiled: August 29, 1974Date of Patent: July 27, 1976Assignee: Aisin Seiki Kabushiki KaishaInventors: Noboru Murakami, Koichi Matsuo, Koichiro Hirosawa, Kazuo Ohara