Patents by Inventor Takuo Tanaka
Takuo Tanaka 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: 20240085750Abstract: A display device includes a first substrate, a gate wiring on the first substrate, a first insulating layer on the gate wiring, a source wiring on the first insulating layer and intersecting the gate wiring, a second insulating layer on the source wiring, a pixel electrode on the second insulating layer; and a first buffer layer between the first substrate and the first insulating layer. A refractive index of the first buffer layer is higher than a refractive index of the first substrate, at an interface between the first buffer layer and the first substrate, and the refractive index of the first buffer layer is lower than a refractive index of the first insulating layer, at an interface between the first buffer layer and the first insulating layer.Type: ApplicationFiled: August 11, 2023Publication date: March 14, 2024Applicant: Japan Display Inc.Inventors: Takuo KAITOH, Akihiro HANADA, Yoshinori TANAKA
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Publication number: 20240036040Abstract: Provided is an easy to determine immunochromatography detection device that detects a target substance that may be contained in a sample fluid. The detection device includes a flow path for the sample fluid and detection parts 1 to which capture selected substances. In one embodiment, an Metal-Insulator-Metal (MIM) structure is formed when the target substance is included in the sample fluid at the detection parts, and a color is produced at the detection parts by resonance absorption. The MIM structure comprises a metal thin film (M layer) that is formed on a support that acts as either a capture substance/target substance/reference substance composite layer or a capture substance/reference substance composite layer (I layer), and metal fine particles (M layer) with which a reference substance is labeled.Type: ApplicationFiled: December 16, 2021Publication date: February 1, 2024Inventor: Takuo TANAKA
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Patent number: 10775243Abstract: In accordance with heat received from a target object, a visible light absorption element 10 changes a frequency component of visible light to reflect or transmit. The visible light absorption element 10 possesses a resonance frequency included in a visible light frequency region. The visible light absorption element 10 absorbs visible light of the resonance frequency. The visible light absorption element 10 thermally deforms due to temperature change to thereby change the resonance frequency, and absorbs visible light of the changed resonance frequency.Type: GrantFiled: August 15, 2017Date of Patent: September 15, 2020Assignee: RIKENInventor: Takuo Tanaka
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Patent number: 10627335Abstract: In an embodiment of the present disclosure, a structure comprising an infrared ray absorption surface is provided for use in infrared spectroscopy, and the infrared ray absorption surface absorbs infrared rays in a detection wavelength range that covers the response wavelengths of a substance to be detected. The structure comprises, for example, a metal substrate having a metal surface, metal components arranged at positions facing the metal surface, and a support part that supports each of the metal components relative to the metal surface, and a resonator for the infrared ray absorption surface is formed by the metal substrate, the metal components and the support parts. Additionally, in an embodiment of the present disclosure, an infrared spectroscopy method wherein a specimen is brought into close contact to the infrared ray absorption surface of the structure is also provided.Type: GrantFiled: July 7, 2016Date of Patent: April 21, 2020Assignee: RIKENInventors: Takuo Tanaka, Atsushi Ishikawa
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Publication number: 20180202918Abstract: In an embodiment of the present disclosure, a structure comprising an infrared ray absorption surface is provided for use in infrared spectroscopy, and the infrared ray absorption surface absorbs infrared rays in a detection wavelength range that covers the response wavelengths of a substance to be detected. The structure comprises, for example, a metal substrate having a metal surface, metal components arranged at positions facing the metal surface, and a support part that supports each of the metal components relative to the metal surface, and a resonator for the infrared ray absorption surface is formed by the metal substrate, the metal components and the support parts. Additionally, in an embodiment of the present disclosure, an infrared spectroscopy method wherein a specimen is brought into close contact to the infrared ray absorption surface of the structure is also provided.Type: ApplicationFiled: July 7, 2016Publication date: July 19, 2018Inventors: Takuo TANAKA, Atsushi ISHIKAWA
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Publication number: 20170370777Abstract: In accordance with heat received from a target object, a visible light absorption element 10 changes a frequency component of visible light to reflect or transmit. The visible light absorption element 10 possesses a resonance frequency included in a visible light frequency region. The visible light absorption element 10 absorbs visible light of the resonance frequency. The visible light absorption element 10 thermally deforms due to temperature change to thereby change the resonance frequency, and absorbs visible light of the changed resonance frequency.Type: ApplicationFiled: August 15, 2017Publication date: December 28, 2017Inventor: Takuo Tanaka
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Patent number: 8372249Abstract: In a method of producing a metal structure by photoreducing metal ion, a substance capable of suppressing growth of metal crystal is added to a medium in which metal ion is dispersed to prevent growth of the metal crystal produced by photoreduction of the metal ion, thereby processing resolution of a metal structure formed of the metal crystal is improved.Type: GrantFiled: March 7, 2012Date of Patent: February 12, 2013Assignee: RikenInventors: Takuo Tanaka, Nobuyuki Takeyasu, Satoshi Kawata
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Publication number: 20120160058Abstract: In a method of producing a metal structure by photoreducing metal ion, a substance capable of suppressing growth of metal crystal is added to a medium in which metal ion is dispersed to prevent growth of the metal crystal produced by photoreduction of the metal ion, thereby processing resolution of a metal structure formed of the metal crystal is improved.Type: ApplicationFiled: March 7, 2012Publication date: June 28, 2012Applicant: RIKENInventors: Takuo TANAKA, Nobuyuki TAKEYASU, Satoshi KAWATA
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Patent number: 7619958Abstract: An optical pickup apparatus comprises an orbicular zone forming lens group 14 for forming the section of the laser beam, which is irradiated to an optical disc DK having plural recording layers, into an annular shape, a condenser lens 35 that converges the reflected beam from the optical disc DK, and a pinhole plate 36 having formed thereto a pinhole 36a with a size corresponding to a flux diameter of the reflected beam converged by the condenser lens 35. The orbicular zone forming lens group 14 refracts the laser beam irradiated to the optical disc DK so as to form the section of the laser beam into an annular shape in order that the internal diameter of the annular converged flux formed on the pinhole plate 36a by the reflected beam from the recording layers other than the recording layer having an optical spot formed thereon becomes greater than the diameter of the pinhole 36a.Type: GrantFiled: February 8, 2007Date of Patent: November 17, 2009Assignees: Pulstec Industrial Co., Ltd., RikenInventors: Masahiko Ujiie, Takayuki Hayashi, Takuo Tanaka, Satoshi Kawata
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Publication number: 20090242381Abstract: In a method of producing a metal structure by photoreducing metal ion, a substance capable of suppressing growth of metal crystal is added to a medium in which metal ion is dispersed to prevent growth of the metal crystal produced by photoreduction of the metal ion, thereby processing resolution of a metal structure formed of the metal crystal is improvedType: ApplicationFiled: March 25, 2009Publication date: October 1, 2009Applicant: RIKENInventors: Takuo Tanaka, Nobuyuki Takeyasu, Satoshi Kuwata
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Patent number: 7532397Abstract: In order to make a reflection coefficient in boundary surface between materials to be zero and permeate 100% of a light independent of a polarization direction, an optical device made of an optical material composed of a metamaterial prepared by arranging a plurality of at least either of electrical resonators or magnetic resonators each being smaller than a wavelength of a light wave in only a predetermined plane, and at least either of the electrical resonators and the magnetic resonators arranged functioning with respect to s-polarization, wherein at least either of the dielectric constant or the magnetic permeability is controlled in response to the function to induce a Brewster phenomenon in the s-polarization.Type: GrantFiled: June 19, 2006Date of Patent: May 12, 2009Assignee: RikenInventors: Takuo Tanaka, Satoshi Kawata
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Publication number: 20070183292Abstract: An optical pickup apparatus comprises an orbicular zone forming lens group 14 for forming the section of the laser beam, which is irradiated to an optical disc DK having plural recording layers, into an annular shape, a condenser lens 35 that converges the reflected beam from the optical disc DK, and a pinhole plate 36 having formed thereto a pinhole 36a with a size corresponding to a flux diameter of the reflected beam converged by the condenser lens 35. The orbicular zone forming lens group 14 refracts the laser beam irradiated to the optical disc DK so as to form the section of the laser beam into an annular shape in order that the internal diameter of the annular converged flux formed on the pinhole plate 36a by the reflected beam from the recording layers other than the recording layer having an optical spot formed thereon becomes greater than the diameter of the pinhole 36a.Type: ApplicationFiled: February 8, 2007Publication date: August 9, 2007Applicants: PULSTEC INDUSTRIAL CO., LTD., RIKENInventors: Masahiko UJIIE, Takayuki HAYASHI, Takuo TANAKA, Satoshi KAWATA
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Patent number: 7220855Abstract: The present invention provides a novel industrially excellent and ecological process for producing methylcobalamin which is useful as a medicament etc. More specifically, it provides a process for producing methylcobalamin by reducing cyanocobalamin or hydroxocobalamin in the presence of a reducing agent, and then methylating the reductant by adding a water-soluble methylating agent.Type: GrantFiled: June 4, 2002Date of Patent: May 22, 2007Assignee: Eisai Co., Ltd.Inventors: Yoshihiko Hisatake, Takuo Tanaka, Tomio Tsurugi, Hiroshi Kuroda
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Patent number: 7175877Abstract: Disclosed is a film comprising PMMA and a fluorescent substance having a xanthene skeleton and a lactone ring and/or a fluorescent substance having a xanthene skeleton and a group —COOR, where R represents a hydrogen atom or a substituent, capable of forming an intramolecular lactone ring, said fluorescent substances being dispersed in the PMMA. The film is useful as an optical memory.Type: GrantFiled: March 25, 2004Date of Patent: February 13, 2007Assignee: RikenInventors: Takuo Tanaka, Satoshi Kawata, Takayuki Okamoto
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Publication number: 20070014006Abstract: In order to make a reflection coefficient in boundary surface between materials to be zero and permeate 100% of a light independent of a polarization direction, an optical device made of an optical material composed of a metamaterial prepared by arranging a plurality of at least either of electrical resonators or magnetic resonators each being smaller than a wavelength of a light wave in only a predetermined plane, and at least either of the electrical resonators and the magnetic resonators arranged functioning with respect to s-polarization, whereby at least either of the dielectric constant or the magnetic permeability is controlled in response to the function to induce a Brewster phenomenon in the s-polarization wherein the incident plane of a light wave being set out at a Brewster's angle with respect to the p-polarization and further at least either of the dielectric constant and the magnetic permeability of the optical material being controlled with respect to the s-polarization of the optical material,Type: ApplicationFiled: June 19, 2006Publication date: January 18, 2007Applicant: RIKENInventors: Takuo Tanaka, Satoshi Kawata
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Publication number: 20060263541Abstract: The present invention provides a photoreduction method for metal complex ions by which strict controllability is not required in the control of its exposure amount, and a size of the metallic structure to be produced can be controlled, besides there is no fear of reducing spatial resolution of the size of the metallic structure to be produced. The photoreduction method for metal complex ions wherein a laser beam is beam-irradiated on a metal complex ion dispersion element dispersed in a material to photoreduce the metal complex ions thereby fabricating a metallic structure, includes the steps of adding a predetermined coloring matter to the material in which the metal complex ion dispersion element is dispersed, and beam-irradiating the laser beam to the material to which the predetermined coloring matter has been added.Type: ApplicationFiled: May 11, 2006Publication date: November 23, 2006Applicant: RIKENInventors: Takuo Tanaka, Atsushi Ishikawa, Satoshi Kawata
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Publication number: 20060182154Abstract: In order to perform positional control of a condensing spot of pulsed laser beam highly accurately when performing optical modeling, optical recording or the like in optical machining technology, optical recording technology or the like which uses various kinds of pulsed laser, which are ultra-short pulsed lasers such as a femtosecond laser and short pulsed laser such as a picosecond laser and a sub-picosecond laser, as a light source, a pulsed laser system detects an output beam from a pulsed laser, controls laser oscillation of the pulsed laser based on the detection result such the output beam contains CW laser beam together with pulsed laser beam, and allows the pulsed laser to output the pulsed laser beam and the CW laser beam simultaneously as the output beam from the pulsed laser.Type: ApplicationFiled: January 12, 2006Publication date: August 17, 2006Applicant: RIKENInventors: Takuo Tanaka, Takayuki Hayashi, Satoshi Kawata
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Publication number: 20040258955Abstract: Disclosed is a film comprising PMMA and a fluorescent substance having a xanthene skeleton and a lactone ring and/or a fluorescent substance having a xanthene skeleton and a group —COOR, where R represents a hydrogen atom or a substituent, capable of forming an intramolecular lactone ring, said fluorescent substances being dispersed in the PMMA. The film is useful as an optical memory.Type: ApplicationFiled: March 25, 2004Publication date: December 23, 2004Inventors: Takuo Tanaka, Satoru Kawata, Takayuki Okamoto
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Publication number: 20040132687Abstract: The present invention provides a novel industrially excellent and ecological process for producing methylcobalamin which is useful as a medicament etc. More specifically, it provides a process for producing methylcobalamin by reducing cyanocobalamin or hydroxocobalamin in the presence of a reducing agent, and then methylating the reductant by adding a water-soluble methylating agent.Type: ApplicationFiled: October 30, 2003Publication date: July 8, 2004Inventors: Yoshihiko Hisatake, Takuo Tanaka, Tomio Tsurugi, Hiroshi Kuroda
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Patent number: 4526420Abstract: A seat cover fixing construction for fixing a bag shaped seat cover to a seat. An engagement portion of the seat extends around the part of the seat near the edge of the seat cover, extends from the seat in the general direction away from the closed end of the bag shape of the seat cover, and is formed with a free edge. A resilient band is shaped as an endless ribbon, and a first edge of this band is coupled to and extends around the edge of the open end of the seat cover. The two edges of the band are of approximately the same length. The band is thinner at its central portion than at its two edges. The resilient band is engaged inside and around the engagement portion of the seat, with the first edge of the band lying generally next to the free edge of the engagement portion of the seat. Thus, the band has been turned inside out to fit under the engagement portion.Type: GrantFiled: January 12, 1983Date of Patent: July 2, 1985Assignees: Toyota Jidosha Kabushiki Kaisha, Takashimaya Nippatsu Kogyo Co., Ltd.Inventors: Reiki Kawamura, Takuo Tanaka, Toshio Asano, Yasuhiro Sawada