Patents by Inventor Yasuhiko Takeda
Yasuhiko Takeda 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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Electrodes for chemical reaction, and cell for chemical reaction and chemical reactor using the same
Patent number: 10995412Abstract: An electrode set for chemical reaction includes a substrate, and electrodes for reduction and oxidation reactions alternately arranged on the same surface of the substrate.Type: GrantFiled: March 11, 2019Date of Patent: May 4, 2021Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Yasuhiko Takeda, Takeshi Morikawa, Naohiko Kato, Shintaro Mizuno, Masahito Shiozawa, Hiroaki Wakayama -
Patent number: 10424678Abstract: Double groove diffraction gratings are used in combination with various types of photoelectrodes including dye-sensitized and organic photoelectrodes to increase absorption efficiency as well as to provide one or more of a variety of functions including transparency and reflectivity.Type: GrantFiled: January 10, 2011Date of Patent: September 24, 2019Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Hideo Iizuka, Yasuhiko Takeda, Hisayoshi Fujikawa
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ELECTRODES FOR CHEMICAL REACTION, AND CELL FOR CHEMICAL REACTION AND CHEMICAL REACTOR USING THE SAME
Publication number: 20190284706Abstract: An electrode set for chemical reaction includes a substrate, and electrodes for reduction and oxidation reactions alternately arranged on the same surface of the substrate.Type: ApplicationFiled: March 11, 2019Publication date: September 19, 2019Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Yasuhiko TAKEDA, Takeshi MORIKAWA, Naohiko KATO, Shintaro MIZUNO, Masahito SHIOZAWA, Hiroaki WAKAYAMA -
Patent number: 9795542Abstract: A photoelectric conversion device includes: a wavelength converting region that absorbs ambient light to generate electrons and holes, and recombines the generated electrons and holes to generate monochromatic light; and a photoelectric conversion region that has a p-n junction or p-i-n junction, absorbs the monochromatic light generated in the wavelength converting region to generate electrons and holes, and separates and moves the electrons and holes generated by absorption of the monochromatic light. The wavelength converting region includes: a carrier generating region that generates the electrons and holes; a light emitting region that generates the monochromatic light; and a carrier selective transfer region that is disposed between the carrier generating region and the light emitting region and that, of the electrons and holes generated in the carrier generating region, moves those electrons and holes having specific energies difference there between to the light emitting region.Type: GrantFiled: July 6, 2012Date of Patent: October 24, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomonori Nagashima, Yasuhiko Takeda, Nicholas John Ekins-Daukes, Daniel James Farrell
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Patent number: 9500785Abstract: A grating structure and a solar cell assembly. In one aspect, the grating structure suppresses the zero order transmission to near 0%. In another aspect, the solar cell assembly has improved absorption due to coupling with a grating structure.Type: GrantFiled: January 31, 2014Date of Patent: November 22, 2016Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., The Trustees of the University of Pennsylvania, Toyota Central Research and Development Laboratories, Inc.Inventors: Hideo Iizuka, Nader Engheta, Yasuhiko Takeda
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Patent number: 9136406Abstract: A solar cell structure using either a dye-sensitized or organic absorber is provided with a diffraction grating on at least one side to enhance the travel of first order diffraction components through the photo sensitive material. A two-sided cell uses diffraction gratings both top and bottom wherein the periodic diffraction elements of one grating are shifted by one-quarter of the grating period relative to the other.Type: GrantFiled: July 7, 2010Date of Patent: September 15, 2015Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Hideo Iizuka, Yasuhiko Takeda, Hisayoshi Fujikawa
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Publication number: 20140224305Abstract: A photoelectric conversion device includes: a wavelength converting region that absorbs ambient light to generate electrons and holes, and recombines the generated electrons and holes to generate monochromatic light; and a photoelectric conversion region that has a p-n junction or p-i-n junction, absorbs the monochromatic light generated in the wavelength converting region to generate electrons and holes, and separates and moves the electrons and holes generated by absorption of the monochromatic light. The wavelength converting region includes: a carrier generating region that generates the electrons and holes; a light emitting region that generates the monochromatic light; and a carrier selective transfer region that is disposed between the carrier generating region and the light emitting region and that, of the electrons and holes generated in the carrier generating region, moves those electrons and holes having specific energies difference there between to the light emitting region.Type: ApplicationFiled: July 6, 2012Publication date: August 14, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomonori Nagashima, Yasuhiko Takeda, Nicholas John Ekins-Daukes, Daniel James Farrell
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Publication number: 20140144506Abstract: A grating structure and a solar cell assembly. In one aspect, the grating structure suppresses the zero order transmission to near 0%. In another aspect, the solar cell assembly has improved absorption due to coupling with a grating structure.Type: ApplicationFiled: January 31, 2014Publication date: May 29, 2014Applicants: Toyota Motor Engineering and Manufacturing North America, Inc., Toyota Central Research and Development Laboratories, Inc., The Trustees of the University of PennsylvaniaInventors: Hideo Iizuka, Nader Engheta, Yasuhiko Takeda
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Patent number: 8675279Abstract: A grating structure and a solar cell assembly. In one aspect, the grating structure suppresses the zero order transmission to near 0%. In another aspect, the solar cell assembly has improved absorption due to coupling with a grating structure.Type: GrantFiled: December 15, 2009Date of Patent: March 18, 2014Assignees: Toyota Motor Engineering and Manufacturing North America, Inc., The Trustees of the University of Pennsylvania, Toyota Central Research and Development Laboratories, Inc.Inventors: Hideo Iizuki, Nader Engheta, Yasuhiko Takeda
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Publication number: 20120222737Abstract: A method of fabricating a hot carrier energy conversion structure, and a hot carrier energy conversion structure. The method comprises forming an energy selective contact ESC comprising a tunnelling layer; forming a carrier generation layer on the ESC; and forming a semiconductor contact without a tunnelling layer on the carrier generation layer.Type: ApplicationFiled: July 2, 2010Publication date: September 6, 2012Applicants: Toyota Jidosha Kabushiki Kaisha, NewSouth Innovations Pty LimitedInventors: Gavin John Conibeer, Santosh Shrestha, Dirk Konig, Martin Andrew Green, Tomonori Nagashima, Yasuhiko Takeda, Tadashi Ito, Tomoyoshi Motohiro
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Publication number: 20120174980Abstract: Double groove diffraction gratings are used in combination with various types of photoelectrodes including dye-sensitized and organic photoelectrodes to increase absorption efficiency as well as to provide one or more of a variety of functions including transparency and reflectivity.Type: ApplicationFiled: January 10, 2011Publication date: July 12, 2012Applicant: Toyota Motor Engineering & Mannufacturing North America, Inc.Inventors: Hideo IIZUKA, Yasuhiko TAKEDA, Hisayoshi FUJIKAWA
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Publication number: 20120006404Abstract: A solar cell structure using either a dye-sensitized or organic absorber is provided with a diffraction grating on at least one side to enhance the travel of first order diffraction components through the photo sensitive material. A two-sided cell uses diffraction gratings both top and bottom wherein the periodic diffraction elements of one grating are shifted by one-quarter of the grating period relative to the other.Type: ApplicationFiled: July 7, 2010Publication date: January 12, 2012Applicant: Toyota Motor Engineering and Manufacturing North America, Inc.Inventors: Hideo Iizuka, Yasuhiko Takeda, Hisayoshi Fujikawa
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Publication number: 20110139234Abstract: A grating structure and a solar cell assembly. In one aspect, the grating structure suppresses the zero order transmission to near 0%. In another aspect, the solar cell assembly has improved absorption due to coupling with a grating structure.Type: ApplicationFiled: December 15, 2009Publication date: June 16, 2011Applicants: Toyota Motor Engineering and Manufacturing North America, Inc., The Trustees of the University of Pennsylvania Office of Research Services, Toyota Central Research and Development Laboratories, Inc.Inventors: Hideo Iizuka, Nader Engheta, Yasuhiko Takeda
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Publication number: 20100258164Abstract: The present invention provides a hot carrier type photovoltaic device capable of effectively improving conversion efficiency even when the residence time of carriers in a light absorbing layer is short. The photovoltaic device includes: a light absorbing layer that absorbs light and generates electrons and holes; an electron moving layer that is provided adjacent to one surface of the light absorbing layer; a hole moving layer that is provided adjacent to the other surface of the light absorbing layer; a negative electrode that is provided on the electron moving layer; and a positive electrode that is provided on the hole moving layer. The electron moving layer has a conduction band that has an energy gap narrower than that of a conduction band of the light absorbing layer and selectively transmits the electrons with a predetermined energy level.Type: ApplicationFiled: August 26, 2008Publication date: October 14, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuhiko Takeda, Tadashi Ito, Tomoyoshi Motohiro, Tomonori Nagashima
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Patent number: 7737046Abstract: The present invention is a method of manufacturing a quantum dot array having a plurality of columnar parts including a quantum dot on a substrate, the method comprising the steps of obliquely vapor-depositing a material constituting a first barrier layer to become an energy barrier against the quantum dot onto a surface of the substrate, so as to form a plurality of first barrier layers; obliquely vapor-depositing a material constituting the quantum dot with respect to the surface of the substrate, so as to form the quantum dots on the first barrier layers; and obliquely vapor-depositing a material constituting a second barrier layer to become an energy barrier against the quantum dot with respect to the surface of the substrate, so as to form the second barrier layers on the quantum dots.Type: GrantFiled: November 24, 2005Date of Patent: June 15, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yasuhiko Takeda, Tomoyoshi Motohiro
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Publication number: 20090011579Abstract: The present invention is a method of manufacturing a quantum dot array having a plurality of columnar parts including a quantum dot on a substrate, the method comprising the steps of obliquely vapor-depositing a material constituting a first barrier layer to become an energy barrier against the quantum dot onto a surface of the substrate, so as to form a plurality of first barrier layers; obliquely vapor-depositing a material constituting the quantum dot with respect to the surface of the substrate, so as to form the quantum dots on the first barrier layers; and obliquely vapor-depositing a material constituting a second barrier layer to become an energy barrier against the quantum dot with respect to the surface of the substrate, so as to form the second barrier layers on the quantum dots.Type: ApplicationFiled: November 24, 2005Publication date: January 8, 2009Inventors: Yasuhiko Takeda, Tomoyoshi Motohiro
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Publication number: 20070013781Abstract: An electronic still camera which transmits taken images to a printer connected to the camera to print the images is provided with a microcomputer for generating image data for printing and communicating with the printer. When start of printing is directed, the microcomputer obtains information on characteristics of the printer from the printer, generates image data whose number of pixels differs between when the printing density is a predetermined value or more and when it is less than the predetermined value, and transmits the image data to the printer. A connector is provided for attaching a cable of the printer to the electronic still camera, and a switch for detecting whether the cable is attached or not is provided in the connector. When the cable is attached to the connector, only transmitting images to the printer to print the images is permitted even if taking of images or reproduction display is directed by a manual operation.Type: ApplicationFiled: September 18, 2006Publication date: January 18, 2007Inventors: Naohiro Kageyama, Yasuhiko Takeda, Yoko Sogabe, Katsuyuki Nanba
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Patent number: 6703188Abstract: A method of fabricating an optical waveguide structure includes the step of introducing light into a photo-curable liquid resin. The liquid resin can be a mixture of two types of photo-curable liquid resins having different curing initiation wavelengths and different refractive indexes. The method can include dipping one end of a fiber into the liquid mixture. Light having a wavelength &lgr;1 can be radiated from the tip end of the optical fiber in order to cure one of the photo-curable liquid resins thereby forming a waveguide. Light having a different wavelength &lgr;2 can be radiated from an area surrounding the waveguide so as to cure the liquid mixture and form a cladding portion around the waveguide.Type: GrantFiled: March 27, 2000Date of Patent: March 9, 2004Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Manabu Kagami, Tatsuya Yamashita, Hiroshi Ito, Yasuhiko Takeda
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Patent number: 6607279Abstract: A light guiding plate guides light from a light source to illuminate a liquid crystal cell. A reflector reflects light from the light source. A first surface and a second surface selectively transmits or reflects light. A first region is formed on the first surface at a location that is relatively near the light source. The first region includes a first inclined face and a second inclined face. The first inclined face reflects light from the light source to guide light to the reflector. The second inclined face reflects light from the light source to the second surface so that the second surface emits light. A second region is formed on the first surface at a location that is relatively far from the light source. The second region includes a third inclined face and a fourth inclined face. The third inclined face reflects light from the light source to the second surface so that the second surface emits light.Type: GrantFiled: September 17, 2001Date of Patent: August 19, 2003Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Eiki Niida, Fumikazu Isogai, Yasuya Mita, Norihito Takeuchi, Tomoyoshi Motohiro, Tatsuo Fukano, Yasuhiko Takeda
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Patent number: 6416929Abstract: A recording medium includes a first substance and a second substance at least in which the first and second substances undergo an oxidation-reduction reaction when an external energy is applied, thereby recording information by varying the optical characteristics. In the recording medium, the reaction of the first and second substances is suppressed, reaction which degrades the recording characteristics other than the case where the recording medium is subjected to recording. In an optical disk 100 (i.e., the recording medium), a WO3 film 2 (i.e., a second substance), a C film 3 (i.e., a third substance) and an Sn-10 atomic % Sr film 4 (i.e., a first substance) are formed successively on a substrate 1. When the recording medium is irradiated with a recording laser beam as an external energy, the WO3 forming the film 2 is reduced to WO2.Type: GrantFiled: June 17, 1999Date of Patent: July 9, 2002Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Tatsuo Fukano, Yasuhiko Takeda, Naohiko Kato, Tomoyoshi Motohiro