Patents by Inventor Yoshitaka Tanaka
Yoshitaka 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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Patent number: 10422936Abstract: Alighting device includes an optical fiber having a first end portion from which a light emitted by a light source is introduced, and a second end portion, the optical fiber allowing the light to pass therethrough while radiating from a side surface of the optical fiber to an outside; a tube having light-transmissivity and covering the side surface of the optical fiber, such that a gap is located between the side surface of the optical fiber and the tube; a light-shielding cylindrical body covering the second end portion of the optical fiber, such that a space is located between the second end portion of the optical fiber and the cylindrical body, at least a portion of the light-shielding cylindrical body being disposed in the tube; and a light conductive part on a side surface of the cylindrical body, the light conductive part allowing light radiated from the second end portion of the optical fiber to be conducted to a portion of the tube at an outside of the cylindrical body in a diametrical direction of thType: GrantFiled: September 29, 2017Date of Patent: September 24, 2019Assignee: NICHIA CORPORATIONInventors: Katsuyuki Onozuka, Yoshitaka Tanaka
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Patent number: 10420209Abstract: The polyester sheet in accordance with an aspect of the present invention contains crystals of polyester which is a polycondensate of polyvalent carboxylic acid and polyalcohol. The polyester sheet contains nano-oriented crystals which contain crystals of polyester in each of which a polymer chain is highly oriented and each of which has a crystal size of 50 nm or less. A heatproof temperature of the polyester sheet is higher than a temperature that is lower than an equilibrium melting point of the polyester by 80° C., and a melting point of the polyester sheet is higher than a temperature that is lower than the equilibrium melting point of the polyester by 40° C.Type: GrantFiled: August 24, 2015Date of Patent: September 17, 2019Assignee: HIROSHIMA UNIVERSITYInventors: Masamichi Hikosaka, Kiyoka Okada, Yoshitaka Tanaka
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Patent number: 10411173Abstract: A light emitting device and light emitting module using the same are provided. The light emitting device includes a substrate, a light-emitting element provided on the substrate, and a light transmissive sealing member covering the light-emitting element on the substrate. The light transmissive sealing member includes a body portion and a lens portion that are sequentially disposed from a substrate side.Type: GrantFiled: March 31, 2016Date of Patent: September 10, 2019Assignee: NICHIA CORPORATIONInventors: Takanori Aruga, Yoshiki Endo, Takuya Yamanoi, Daisuke Kishikawa, Yoshitaka Tanaka
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Patent number: 10310513Abstract: A conveyance control device executes: a control step of detecting entering to a merging point adjacent area set on adjacent to each merging point on the conveyance route; a detection step of detecting whether there is an obstacle around the carrying cart; a communication step of performing, when the entering to each merging point adjacent area is detected, local wireless communications with another carrying cart by using a common frequency band and a common identification code set to values different among merging points; and a merging point passing control step of starting the communication step when the other carrying cart is detected in the merging point adjacent area in the detection step, and causing passing of a merging point in accordance with a priority set to each entering passage to the merging point, after a handshake with the other carrying cart is successfully performed in the communication step.Type: GrantFiled: March 20, 2017Date of Patent: June 4, 2019Assignees: DAIFUKU CO., LTD., HOKUYO AUTOMATIC CO., LTD.Inventors: Yoji Maejima, Tadashi Nishikawa, Yoshitaka Tanaka
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Patent number: 10207967Abstract: A method for separating an alkyl aromatic hydrocarbon, the method having a step of adding a first diluent and an extractant having a superacid to a mixture comprising the alkyl aromatic hydrocarbon and one or more isomers thereof to carry out an acid-base extraction to thereby form a complex of the alkyl aromatic hydrocarbon with the superacid, and thereafter separating the complex from the mixture, and a step of adding an eliminating agent having a relative basicity in a range of 0.06 to 10 with respect to the alkyl aromatic hydrocarbon and a second diluent to the complex, and carrying out complex exchange of the alkyl aromatic hydrocarbon for the eliminating agent to thereby separate the alkyl aromatic hydrocarbon from the complex.Type: GrantFiled: September 25, 2017Date of Patent: February 19, 2019Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Junya Nishiuchi, Shinichi Nagao, Yoshitaka Tanaka, Mitsuharu Kitamura, Hiroaki Oka
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Patent number: 10189132Abstract: A core grasping apparatus according to the present disclosure grasps a core including a core main body and a core print provided at one end of the core main body. The core grasping apparatus includes: a first holding device and a second holding device respectively including expandable and contractible first and second holding parts; and a turning suppression part configured to suppress the core from turning upon the core print being grasped by the first holding device and the second holding device. The first holding device and the second holding device grasp the core print by respectively expanding the first holding part and the second holding part, and the turning suppression part applies a force that suppresses a turning moment acting on the core to the core print.Type: GrantFiled: October 11, 2017Date of Patent: January 29, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshitaka Tanaka, Makoto Kikuchi, Tsubasa Ito, Tadashi Nakahashi, Masaki Kobune
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Patent number: 10120115Abstract: An illumination device includes: an optical fiber, the optical fiber allowing light emitted from a light source to be introduced at a first end portion thereof and to be guided through the optical fiber while emitting a portion of the light through a side surface of the optical fiber; a light-transmissive tube, the light-transmissive tube covering the side surface of the optical fiber such that a gap is located between the tube and the side surface of the optical fiber; and a light-shielding cap covering a second end portion of the tube at a side opposite the light source such that a space is located between a bottom portion of the cap and the second end portion of the tube. A second end portion of the optical fiber projects past the second end portion of the tube and is located at an inner side of the cap.Type: GrantFiled: October 13, 2017Date of Patent: November 6, 2018Assignee: NICHIA CORPORATIONInventors: Katsuyuki Onozuka, Wataru Ogura, Yoshitaka Tanaka
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Patent number: 10059572Abstract: Provided is a core grasping method of grasping a core using a core grasping apparatus. The core grasping apparatus includes grasping devices respectively having expandable and contractible grasping parts. The core includes holes, and at least one of the holes has an inside diameter that decreases in the opposite direction from a direction of a turning moment occurring on the core. The core grasping method involves, when grasping the core, expanding the grasping parts inserted in the holes so as to bring the grasping parts into contact with inner walls of the holes of the core, and grasping the core and applying a force that suppresses the turning moment to the core.Type: GrantFiled: September 25, 2017Date of Patent: August 28, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshitaka Tanaka, Makoto Kikuchi, Tsubasa Ito, Mitsuhiro Ishikura, Masaki Kobune
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Patent number: 10046924Abstract: A core conveying device includes a plurality of holding devices, a support section, a moving device, and a mounting table. The support section has a hole formed at a position corresponding to a positioning pin and is connected so as to slide in a horizontal direction with respect to the moving device. A size of a lower end opening of the hole is larger than a size of an upper end of the positioning pin. The support section is configured such that, when the support section is moved downward so as to grip the core, as the positioning pin abuts against an inner surface of the hole and the support section slides in the horizontal direction with respect to the moving device, a position of the support section in the horizontal direction with respect to the core is determined.Type: GrantFiled: December 11, 2017Date of Patent: August 14, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Makoto Kikuchi, Tsubasa Ito, Yoshitaka Tanaka, Tadashi Nakahashi
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Publication number: 20180170688Abstract: A core conveying device includes a plurality of holding devices, a support section, a moving device, and a mounting table. The support section has a hole formed at a position corresponding to a positioning pin and is connected so as to slide in a horizontal direction with respect to the moving device. A size of a lower end opening of the hole is larger than a size of an upper end of the positioning pin. The support section is configured such that, when the support section is moved downward so as to grip the core, as the positioning pin abuts against an inner surface of the hole and the support section slides in the horizontal direction with respect to the moving device, a position of the support section in the horizontal direction with respect to the core is determined.Type: ApplicationFiled: December 11, 2017Publication date: June 21, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Makoto KIKUCHI, Tsubasa ITO, Yoshitaka TANAKA, Tadashi NAKAHASHI
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Publication number: 20180106943Abstract: An illumination device includes: an optical fiber, the optical fiber allowing light emitted from a light source to be introduced at a first end portion thereof and to be guided through the optical fiber while emitting a portion of the light through a side surface of the optical fiber; a light-transmissive tube, the light-transmissive tube covering the side surface of the optical fiber such that a gap is located between the tube and the side surface of the optical fiber; and a light-shielding cap covering a second end portion of the tube at a side opposite the light source such that a space is located between a bottom portion of the cap and the second end portion of the tube. A second end portion of the optical fiber projects past the second end portion of the tube and is located at an inner side of the cap.Type: ApplicationFiled: October 13, 2017Publication date: April 19, 2018Applicant: NICHIA CORPORATIONInventors: Katsuyuki ONOZUKA, Wataru OGURA, Yoshitaka TANAKA
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Publication number: 20180104782Abstract: A core grasping apparatus according to the present disclosure grasps a core including a core main body and a core print provided at one end of the core main body. The core grasping apparatus includes: a first holding device and a second holding device respectively including expandable and contractible first and second holding parts; and a turning suppression part configured to suppress the core from turning upon the core print being grasped by the first holding device and the second holding device. The first holding device and the second holding device grasp the core print by respectively expanding the first holding part and the second holding part, and the turning suppression part applies a force that suppresses a turning moment acting on the core to the core print.Type: ApplicationFiled: October 11, 2017Publication date: April 19, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshitaka TANAKA, Makoto KIKUCHI, Tsubasa ITO, Tadashi NAKAHASHI, Masaki KOBUNE
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Publication number: 20180105401Abstract: Provided is a core grasping method of grasping a core using a core grasping apparatus. The core grasping apparatus includes grasping devices respectively having expandable and contractible grasping parts. The core includes holes, and at least one of the holes has an inside diameter that decreases in the opposite direction from a direction of a turning moment occurring on the core. The core grasping method involves, when grasping the core, expanding the grasping parts inserted in the holes so as to bring the grasping parts into contact with inner walls of the holes of the core, and grasping the core and applying a force that suppresses the turning moment to the core.Type: ApplicationFiled: September 25, 2017Publication date: April 19, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshitaka TANAKA, Makoto KIKUCHI, Tsubasa ITO, Mitsuhiro ISHIKURA, Masaki KOBUNE
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Publication number: 20180095214Abstract: Alighting device includes an optical fiber having a first end portion from which a light emitted by a light source is introduced, and a second end portion, the optical fiber allowing the light to pass therethrough while radiating from a side surface of the optical fiber to an outside; a tube having light-transmissivity and covering the side surface of the optical fiber, such that a gap is located between the side surface of the optical fiber and the tube; a light-shielding cylindrical body covering the second end portion of the optical fiber, such that a space is located between the second end portion of the optical fiber and the cylindrical body, at least a portion of the light-shielding cylindrical body being disposed in the tube; and a light conductive part on a side surface of the cylindrical body, the light conductive part allowing light radiated from the second end portion of the optical fiber to be conducted to a portion of the tube at an outside of the cylindrical body in a diametrical direction of thType: ApplicationFiled: September 29, 2017Publication date: April 5, 2018Applicant: NICHIA CORPORATIONInventors: Katsuyuki ONOZUKA, Yoshitaka TANAKA
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Patent number: 9896397Abstract: A method for separating an alkyl aromatic hydrocarbon, the method having a step of adding a first diluent and an extractant having a superacid to a mixture comprising the alkyl aromatic hydrocarbon and one or more isomers thereof to carry out an acid-base extraction to thereby form a complex of the alkyl aromatic hydrocarbon with the superacid, and thereafter separating the complex from the mixture, and a step of adding an eliminating agent having a relative basicity in a range of 0.06 to 10 with respect to the alkyl aromatic hydrocarbon and a second diluent to the complex, and carrying out complex exchange of the alkyl aromatic hydrocarbon for the eliminating agent to thereby separate the alkyl aromatic hydrocarbon from the complex.Type: GrantFiled: June 25, 2013Date of Patent: February 20, 2018Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Junya Nishiuchi, Shinichi Nagao, Yoshitaka Tanaka, Mitsuharu Kitamura, Hiroaki Oka
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Publication number: 20180016209Abstract: A method for separating an alkyl aromatic hydrocarbon, the method having a step of adding a first diluent and an extractant having a superacid to a mixture comprising the alkyl aromatic hydrocarbon and one or more isomers thereof to carry out an acid-base extraction to thereby form a complex of the alkyl aromatic hydrocarbon with the superacid, and thereafter separating the complex from the mixture, and a step of adding an eliminating agent having a relative basicity in a range of 0.06 to 10 with respect to the alkyl aromatic hydrocarbon and a second diluent to the complex, and carrying out complex exchange of the alkyl aromatic hydrocarbon for the eliminating agent to thereby separate the alkyl aromatic hydrocarbon from the complex.Type: ApplicationFiled: September 25, 2017Publication date: January 18, 2018Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Junya NISHIUCHI, Shinichi NAGAO, Yoshitaka TANAKA, Mitsuharu KITAMURA, Hiroaki OKA
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Publication number: 20170295645Abstract: The polyester sheet in accordance with an aspect of the present invention contains crystals of polyester which is a polycondensate of polyvalent carboxylic acid and polyalcohol. The polyester sheet contains nano-oriented crystals which contain crystals of polyester in each of which a polymer chain is highly oriented and each of which has a crystal size of 50 nm or less. A heatproof temperature of the polyester sheet is higher than a temperature that is lower than an equilibrium melting point of the polyester by 80° C., and a melting point of the polyester sheet is higher than a temperature that is lower than the equilibrium melting point of the polyester by 40° C.Type: ApplicationFiled: August 24, 2015Publication date: October 12, 2017Applicants: HIROSHIMA UNIVERSITY, TEIJIN FILM SOLUTIONS LIMITEDInventors: Masamichi HIKOSAKA, Kiyoka OKADA, Yoshitaka TANAKA
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Publication number: 20170283182Abstract: A conveyance control device executes: a control step of detecting entering to a merging point adjacent area set on adjacent to each merging point on the conveyance route; a detection step of detecting whether there is an obstacle around the carrying cart; a communication step of performing, when the entering to each merging point adjacent area is detected, local wireless communications with another carrying cart by using a common frequency band and a common identification code set to values different among merging points; and a merging point passing control step of starting the communication step when the other carrying cart is detected in the merging point adjacent area in the detection step, and causing passing of a merging point in accordance with a priority set to each entering passage to the merging point, after a handshake with the other carrying cart is successfully performed in the communication step,Type: ApplicationFiled: March 20, 2017Publication date: October 5, 2017Applicants: DAIFUKU CO., LTD., HOKUYO AUTOMATIC CO., LTD.Inventors: Yoji MAEJIMA, Tadashi NISHIKAWA, Yoshitaka TANAKA
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Patent number: 9533925Abstract: A method for separating an alkyl aromatic hydrocarbon, the method having a step of adding a first diluent and an extractant having a superacid to a mixture comprising the alkyl aromatic hydrocarbon and one or more isomers thereof to carry out an acid-base extraction to thereby form a complex of the alkyl aromatic hydrocarbon with the superacid, and thereafter separating the complex from the mixture, and a step of adding an eliminating agent having a relative basicity in a range of 0.06 to 10 with respect to the alkyl aromatic hydrocarbon and a second diluent to the complex, and carrying out complex exchange of the alkyl aromatic hydrocarbon for the eliminating agent to thereby separate the alkyl aromatic hydrocarbon from the complex.Type: GrantFiled: June 25, 2013Date of Patent: January 3, 2017Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Junya Nishiuchi, Shinichi Nagao, Yoshitaka Tanaka, Mitsuharu Kitamura, Hiroaki Oka
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Publication number: 20160304999Abstract: A method for processing a metal-cast article according to an aspect of the present invention includes a correcting step of starting to pressurize the metal-cast article by a press machine (10, 20) before a temperature of the metal-cast article 40 decreases to 200° C. or lower after casting is finished. Distortion can be accurately removed in a correction of a metal-cast article. Further, since there is no need to heat the metal-cast article again for the correction, the productivity and energy efficiency can be improved.Type: ApplicationFiled: March 31, 2016Publication date: October 20, 2016Applicant: Toyota Jidosha Kabushiki KaishaInventors: Yoshitaka TANAKA, Yusuke YOKOTA, Takashi TOMITA