Patents by Inventor Hideo Yabuhara
Hideo Yabuhara 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: 7675680Abstract: The invention provides a computer-generated hologram which can be viewed in white at the desired viewing region and a reflective liquid crystal display using the same as a reflector. The computer-generated hologram H is designed to diffuse light having a given reference wavelength ?STD and incident thereon at a given angle of incidence ? in a specific angle range. In a range of wavelengths ?min to ?max including the reference wavelength ?STD wherein zero-order transmission light or zero-order reflection light of incident light on the computer-generated hologram at a given angle of incidence is seen in white by additive color mixing, the maximum diffraction angle ?2MIN of incident light of the minimum wavelength ?MIN in the wavelength range and incident at the angle of incidence ? is larger than the minimum diffraction angle ?1MAX of incident light of the maximum wavelength ?MAX in the wavelength range and incident at said angle of incidence ?.Type: GrantFiled: August 13, 2007Date of Patent: March 9, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventors: Tomohisa Hamano, Mitsuru Kitamura, Daijiro Kodama, Hiroshi Fujita, Hideo Yabuhara, Manami Yabuhara, legal representative
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Publication number: 20080049279Abstract: The invention provides a computer-generated hologram which can be viewed in white at the desired viewing region and a reflective liquid crystal display using the same as a reflector. The computer-generated hologram H is designed to diffuse light having a given reference wavelength ?STD and incident thereon at a given angle of incidence ? in a specific angle range. In a range of wavelengths ?min to ?max including the reference wavelength ?STD wherein zero-order transmission light or zero-order reflection light of incident light on the computer-generated hologram at a given angle of incidence is seen in white by additive color mixing, the maximum diffraction angle ?2MIN of incident light of the minimum wavelength ?MIN in the wavelength range and incident at the angle of incidence ? is larger than the minimum diffraction angle ?1MAX of incident light of the maximum wavelength ?MAX in the wavelength range and incident at said angle of incidence ?.Type: ApplicationFiled: August 13, 2007Publication date: February 28, 2008Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Hideo YABUHARA, Manami YABUHARA, Tomohisa HAMANO, Mitsuru KITAMURA, Daijiro KODAMA, Hiroshi FUJITA
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Patent number: 7271957Abstract: The invention provides a computer-generated hologram which can be viewed in white at the desired viewing region and a reflective liquid crystal display using the same as a reflector. The computer-generated hologram H is designed to diffuse light having a given reference wavelength ?STD and incident thereon at a given angle of incidence ? in a specific angle range. In a range of wavelengths ?min to ?max including the reference wavelength ?STD wherein zero-order transmission light or zero-order reflection light of incident light on the computer-generated hologram at a given angle of incidence is seen in white by additive color mixing, the maximum diffraction angle ?2MIN of incident light of the minimum wavelength ?MIN in the wavelength range and incident at the angle of incidence ? is larger than the minimum diffraction angle ?1MAX of incident light of the maximum wavelength ?MAX in the wavelength range and incident at said angle of incidence ?.Type: GrantFiled: April 18, 2006Date of Patent: September 18, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventors: Manami Yabuhara, legal representative, Tomohisa Hamano, Mitsuru Kitamura, Daijiro Kodama, Hiroshi Fujita, Hideo Yabuhara, deceased
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Publication number: 20060256412Abstract: The invention provides a computer-generated hologram which can be viewed in white at the desired viewing region and a reflective liquid crystal display using the same as a reflector. The computer-generated hologram H is designed to diffuse light having a given reference wavelength ?STD and incident thereon at a given angle of incidence ? in a specific angle range. In a range of wavelengths ?min to ?max including the reference wavelength ?STD wherein zero-order transmission light or zero-order reflection light of incident light on the computer-generated hologram at a given angle of incidence is seen in white by additive color mixing, the maximum diffraction angle ?2MIN of incident light of the minimum wavelength ?MIN in the wavelength range and incident at the angle of incidence ? is larger than the minimum diffraction angle ?1MAX of incident light of the maximum wavelength ?MAX in the wavelength range and incident at said angle of incidence ?.Type: ApplicationFiled: April 18, 2006Publication date: November 16, 2006Inventors: Hideo Yabuhara, Manami Yabuhara, Tomohisa Hamano, Mitsuru Kitamura, Daijiro Kodama, Hiroshi Fujita
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Patent number: 7054044Abstract: The invention provides a computer-generated hologram which can be viewed in white at the desired viewing region and a reflective liquid crystal display using the same as a reflector. The computer-generated hologram H is designed to diffuse light having a given reference wavelength ?STD and incident thereon at a given angle of incidence ? in a specific angle range. In a range of wavelengths ?MIN to ?MAX including the reference wavelength ?STD wherein zero-order transmission light or zero-order reflection light of incident light on the computer-generated hologram at a given angle of incidence is seen in white by additive color mixing, the maximum diffraction angle ?2MIN of incident light of the minimum wavelength ?MIN in the wavelength range and incident at the angle of incidence ? is larger than the minimum diffraction angle ?1MAX of incident light of the maximum wavelength ?MAX in the wavelength range and incident at said angle of incidence ?.Type: GrantFiled: March 25, 2004Date of Patent: May 30, 2006Assignee: Dai Nippon Printing Co., Ltd.Inventors: Tomohisa Hamano, Mitsuru Kitamura, Daijiro Kodama, Hiroshi Fujita, Manami Yabuhara, legal representative, Hideo Yabuhara, deceased
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Publication number: 20040179253Abstract: The invention provides a computer-generated hologram which can be viewed in white at the desired viewing region and a reflective liquid crystal display using the same as a reflector. The computer-generated hologram H is designed to diffuse light having a given reference wavelength &lgr;STD and incident thereon at a given angle of incidence &thgr; in a specific angle range. In a range of wavelengths &lgr;MIN to &lgr;MAX including the reference wavelength &lgr;STD wherein zero-order transmission light or zero-order reflection light of incident light on the computer-generated hologram at a given angle of incidence is seen in white by additive color mixing, the maximum diffraction angle &bgr;2MIN of incident light of the minimum wavelength &lgr;MIN in the wavelength range and incident at the angle of incidence &thgr; is larger than the minimum diffraction angle &bgr;1MAX of incident light of the maximum wavelength &lgr;MAX in the wavelength range and incident at said angle of incidence &thgr;.Type: ApplicationFiled: March 25, 2004Publication date: September 16, 2004Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Tomohisa Hamano, Mitsuru Kitamura, Daijiro Kodama, Hiroshi Fujita, Hideo Yabuhara, Manami Yabuhara
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Patent number: 6747769Abstract: The invention provides a computer-generated hologram which can be viewed in white at the desired viewing region and a reflective liquid crystal display using the same as a reflector. The computer-generated hologram H is designed to diffuse light having a given reference wavelength &lgr;STD and incident thereon at a given angle of incidence &thgr; in a specific angle range. In a range of wavelengths &lgr;MIN to &lgr;MAX including the reference wavelength &lgr;STD wherein zero-order transmission light or zero-order reflection light of incident light on the computer-generated hologram at a given angle of incidence is seen in white by additive color mixing, the maximum diffraction angle &bgr;2MIN of incident light of the minimum wavelength &lgr;MIN in the wavelength range and incident at the angle of incidence &thgr; is larger than the minimum diffraction angle &bgr;1MAX of incident light of the maximum wavelength &lgr;MAX in the wavelength range and incident at said angle of incidence &thgr;.Type: GrantFiled: May 30, 2001Date of Patent: June 8, 2004Assignee: Dai Nippon Printing Co., Ltd.Inventors: Tomohisa Hamano, Mitsuru Kitamura, Daijiro Kodama, Hiroshi Fujita, Hideo Yabuhara
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Publication number: 20020001109Abstract: The invention provides a computer-generated hologram which can be viewed in white at the desired viewing region and a reflective liquid crystal display using the same as a reflector. The computer-generated hologram H is designed to diffuse light having a given reference wavelength &lgr;STD and incident thereon at a given angle of incidence &thgr; in a specific angle range. In a range of wavelengths &lgr;MIN to &lgr;MAX including the reference wavelength &lgr;STD wherein zero-order transmission light or zero-order reflection light of incident light on the computer-generated hologram at a given angle of incidence is seen in white by additive color mixing, the maximum diffraction angle &bgr;2MIN of incident light of the minimum wavelength &lgr;MIN in the wavelength range and incident at the angle of incidence &thgr; is larger than the minimum diffraction angle &bgr;1MAX of incident light of the maximum wavelength &lgr;MAX in the wavelength range and incident at said angle of incidence &thgr;.Type: ApplicationFiled: May 30, 2001Publication date: January 3, 2002Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Tomohisa Hamano, Mitsuru Kitamura, Daijiro Kodama, Hiroshi Fujita, Hideo Yabuhara
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Patent number: 5763868Abstract: An optical card including a card substrate having a recess, and an optical recording member including, in the following order, a surface hard layer, a transparent protective layer, a pattern layer, and an optical recording material layer. The optical recording member is embedded in the recess through an adhesive layer so that the optical recording material layer is in contact with the adhesive layer. The end face of the optical recording member and the side face of the recess of the card substrate respectively have particular tapers facing each other. The optical recording member is embedded in the recess of the card substrate so that the end face of the optical recording member is not exposed from the card substrate.Type: GrantFiled: July 25, 1995Date of Patent: June 9, 1998Assignee: Dai Nippon Printing Co., Ltd.Inventors: Takeshi Kubota, Hiroyuki Yamaguchi, Hideo Yabuhara
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Patent number: 4730457Abstract: A supercharging system has a turbocharger driven by exhaust-gas of the engine, a supercharger driven by an engine and communicated with the turbocharger and the engine in series. A clutch is provided in a device for driving the supercharger and a bypass having a control valve is provided around the supercharger. A control unit is provided to respond to engine operating conditions for operating the clutch and the control valve. The control unit operates to disengage the clutch at light load on the engine in a predetermined low engine speed range, to engage the clutch at heavy load in the low engine speed range, and to disengage the clutch in a predetermined high engine speed range. The control valve is gradually opened in accordance with variation of engine operation conditions when the engine operation is in a transient state.Type: GrantFiled: October 23, 1986Date of Patent: March 15, 1988Assignee: Fuji Jukogyo Kabushiki KaishaInventors: Takemasa Yamada, Hideo Yabuhara, Fujio Takimoto
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Patent number: 4452209Abstract: An air-fuel ratio control system for a vehicle powered by an internal combustion engine having an emission control system with a three-way catalytic converter for controlling the air-fuel ratio in accordance with the operation of the engine. A vacuum sensor detects heavy load operation of the engine, and an engine speed detecting circuit and a predetermined voltage supply circuit are provided. The engine speed detecting circuit is so arranged as to produce an output when the engine speed is lower than a predetermined value. A feedback control circuit is provided for controlling the air-fuel ratio to the stoichiometric air-fuel ratio in normal operating conditions. A first switch device is actuated by the output of the vacuum sensor to connect the output of the predetermined voltage supply circuit with the input of the feedback control circuit when heavy load operation is detected and to render the feedback control circuit inoperative.Type: GrantFiled: January 7, 1982Date of Patent: June 5, 1984Assignees: Fuji Jukogyo Kabushiki Kaisha, Nissan Motor Co., Ltd.Inventors: Yoshiaki Ohara, Hideo Yabuhara
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Patent number: 4408584Abstract: An air-fuel ratio control system for an internal combustion engine having an O.sub.2 -sensor for detecting the concentration of oxygen of exhaust gases passing through the exhaust passage, an electromagnetic valve for correcting the air-fuel ratio of the air-fuel mixture supplied by a carburetor, a feedback control circuit comprising a judging circuit for judging an output signal of the O.sub.2 -sensor and a driving circuit for driving the electromagnetic valve in dependency on an output signal of the judging circuit for controlling the air-fuel ratio to a value approximately to the stoichiometric air-fuel ratio. A Maximum and minimum value hold circuits respectively hold a maximum and a minimum value in one cycle of output variation of the detector. A first comparator compares the outputs of both hold circuits. A second comparator compares the output of the O.sub.2 -sensor with a predetermined level. A gate circuit is responsive to the output signals of the comparators for producing gate control signals.Type: GrantFiled: July 14, 1981Date of Patent: October 11, 1983Assignees: Fuji Jukogyo Kabushiki Kaisha, Nissan Motor Co., Ltd.Inventors: Hideo Yabuhara, Ichiro Kudo