Patents by Inventor Yoshikazu Miyamoto
Yoshikazu Miyamoto 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: 11958101Abstract: A method for manufacturing a forged article, capable of improving the durability of a die for forging is provided. The method, includes forging a steel material, by using a die, by spraying or applying a water-soluble polymer lubricant containing 0.01 to 0.98 mass % of a water-soluble sulfate onto a working surface of the die, the die being made of a raw material having a constituent composition of by mass %, of 0.4 to 0.7% of C, 1.0% or less of Si, 1.0% or less of Mn, 4.0 to 6.0% of Cr, 2.0 to 4.0% of (Mo+½W), 0.5 to 2.5% of (V+Nb), 0 to 1.0% of Ni, 0 to 5.0% of Co, 0.02% or less of N, and a remnant composed of Fe and impurities, and having hardness of 55 to 60 HRC, and the die including a nitrided layer or a nitrosulfidized layer on the working surface thereof.Type: GrantFiled: May 16, 2019Date of Patent: April 16, 2024Assignees: PROTERIAL, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, DAIDO CHEMICAL CO., LTD., UMETOKU CO., LTDInventors: Tatsuya Shouji, Shuho Koseki, Kenichi Inoue, Katsuhiro Obata, Satoshi Murakami, Naoki Hayashi, Yoshikazu Suzuki, Toshifumi Miyamoto, Toru Otomo, Nobuhiro Ikeda, Kousuke Uda, Takashi Ogisu
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Publication number: 20230083722Abstract: Atomic diffusion bonding is carried out using a bonding film comprising a nitride formed at a bonding surface. Operating in a vacuum chamber, a bonding film comprising a nitride is formed on each of flat surfaces of two substrates that each have the flat surface, and, by overlapping the two substrates so the bonding films formed on the two substrates are in contact with each other, the two substrates are joined by the generation of atomic diffusion at a bonding interface between the bonding films.Type: ApplicationFiled: October 14, 2022Publication date: March 16, 2023Applicants: TOHOKU UNIVERSITY, Canon Anelva CorporationInventors: Takehito SHIMATSU, Miyuki UOMOTO, Kazuo MIYAMOTO, Yoshikazu MIYAMOTO, Nobuhiko KATOH, Takayuki MORIWAKI, Takayuki SAITOH
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Patent number: 11450643Abstract: A bonded structure includes a first substrate; a second substrate placed opposite to the first substrate; an intermediate layer provided between the first substrate and the second substrate and including a first oxide thin film layered on the first substrate and a second oxide thin film layered on the second substrate; either or both of the first oxide thin film and the second oxide thin film of the intermediate layer being formed of oxide thin films having increased defects; and an interface between the first oxide thin film and the second oxide thin film=being bonded by chemical bonding, and the interface comprising a low-density portion whose density is lower than that of the two oxide thin films.Type: GrantFiled: February 14, 2022Date of Patent: September 20, 2022Assignees: TOHOKU UNIVERSITY, CANON ANELVA CORPORATIONInventors: Takehito Shimatsu, Miyuki Uomoto, Kazuo Miyamoto, Yoshikazu Miyamoto, Nobuhiko Katoh, Takayuki Moriwaki, Takayuki Saitoh
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Publication number: 20220199569Abstract: A bonded structure includes a first substrate; a second substrate placed opposite to the first substrate; an intermediate layer provided between the first substrate and the second substrate and including a first oxide thin film layered on the first substrate and a second oxide thin film layered on the second substrate; either or both of the first oxide thin film and the second oxide thin film of the intermediate layer being formed of oxide thin films having increased defects; and an interface between the first oxide thin film and the second oxide thin film=being bonded by chemical bonding, and the interface comprising a low-density portion whose density is lower than that of the two oxide thin films.Type: ApplicationFiled: February 14, 2022Publication date: June 23, 2022Applicants: TOHOKU UNIVERSITY, CANON ANELVA CORPORATIONInventors: Takehito SHIMATSU, Miyuki UOMOTO, Kazuo MIYAMOTO, Yoshikazu MIYAMOTO, Nobuhiko KATOH, Takayuki MORIWAKI, Takayuki SAITOH
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Publication number: 20220157770Abstract: The present invention achieves chemical bonding by means of a joined film made of oxides formed on a joined surface. In a vacuum container, amorphous oxide thin films are respectively formed on smooth surfaces of two substrates, and the two substrates overlap such that the amorphous oxide thin films formed on the two substrates come into contact with each other, thereby causing chemical bonding involving an atomic diffusion at a joined interface between the amorphous oxide thin films to join the two substrates.Type: ApplicationFiled: February 4, 2022Publication date: May 19, 2022Applicants: TOHOKU UNIVERSITY, CANON ANELVA CORPORATIONInventors: Takehito SHIMATSU, Miyuki UOMOTO, Kazuo MIYAMOTO, Yoshikazu MIYAMOTO, Nobuhiko KATOH, Takayuki MORIWAKI, Takayuki SAITOH
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Patent number: 9447323Abstract: A method for producing a liquid crystal display includes providing a first substrate having a first electrode and a second electrode on a surface of the first substrate. The first and the second electrodes are made of conductive films. A liquid crystal aligning agent is applied to the surface of the first substrate to form an alignment film on the first substrate. The liquid crystal aligning agent includes at least one of: a polymer that includes a photoalignment structure and a polymerizable carbon-carbon double bond; a polymer that includes a photoalignment structure, and a component that includes a polymerizable carbon-carbon double bond; or a polymer that includes a photoalignment structure and a polymerizable carbon-carbon double bond, and a component that includes a polymerizable carbon-carbon double bond. The second substrate is provided to form a liquid crystal cell. Light is applied to the liquid crystal cell.Type: GrantFiled: February 26, 2014Date of Patent: September 20, 2016Assignee: JSR CORPORATIONInventors: Takashi Nagao, Yoshikazu Miyamoto, Hiroaki Tokuhisa, Michinori Nishikawa
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Publication number: 20140173893Abstract: A method for producing a liquid crystal display includes providing a first substrate having a first electrode and a second electrode on a surface of the first substrate. The first and the second electrodes are made of conductive films. A liquid crystal aligning agent is applied to the surface of the first substrate to form an alignment film on the first substrate. The liquid crystal aligning agent includes at least one of: a polymer that includes a photoalignment structure and a polymerizable carbon-carbon double bond; a polymer that includes a photoalignment structure, and a component that includes a polymerizable carbon-carbon double bond; or a polymer that includes a photoalignment structure and a polymerizable carbon-carbon double bond, and a component that includes a polymerizable carbon-carbon double bond. The second substrate is provided to form a liquid crystal cell. Light is applied to the liquid crystal cell.Type: ApplicationFiled: February 26, 2014Publication date: June 26, 2014Applicant: JSR CORPORATIONInventors: Takashi NAGAO, Yoshikazu MIYAMOTO, Hiroaki TOKUHISA, Michinori NISHIKAWA
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Patent number: 7948288Abstract: A phase determination section determines the quantity of first fixed delay elements for delaying a clock signal by one cycle and generates a selection signal indicating the determination result. A phase adjustment section determines, based on the selection signal, the quantity of second fixed delay elements for delaying an input signal and generates the output signal by delaying the input signal by a certain phase amount. The phase adjustment section includes a variable delay unit which generates, based on the selection signal, a variable delay time allowing the delay time of the output signal to be adjusted in steps of ½n the delay time of one of the second fixed delay elements.Type: GrantFiled: May 26, 2009Date of Patent: May 24, 2011Assignee: Fujitsu Semiconductor LimitedInventor: Yoshikazu Miyamoto
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Patent number: 7759437Abstract: The norbornene derivative of the present invention is represented by the following formula (Im). According to the present invention, a novel norbornene derivative that is useful as a precursor monomer for preparing a cycloolefin polymer exhibiting excellent transparency, heat resistance and low-water absorption properties and having been freely controlled in the birefringence properties and the wavelength dispersion properties can be provided. According to the present invention, further, a norbornene ring-opened (co)polymer having excellent transparency and heat resistance, exhibiting high solubility in organic solvents and having specific birefringence properties and wavelength dependence, and a process for preparing the ring-opened (co)polymer can be provided.Type: GrantFiled: April 1, 2009Date of Patent: July 20, 2010Assignee: JSR CorporationInventors: Yoshikazu Miyamoto, Nobuyuki Miyaki, Kohei Goto, Yuichi Hashiguchi
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Publication number: 20090322392Abstract: A phase determination section determines the quantity of first fixed delay elements for delaying a clock signal by one cycle and generates a selection signal indicating the determination result. A phase adjustment section determines, based on the selection signal, the quantity of second fixed delay elements for delaying an input signal and generates the output signal by delaying the input signal by a certain phase amount. The phase adjustment section includes a variable delay unit which generates, based on the selection signal, a variable delay time allowing the delay time of the output signal to be adjusted in steps of ½n the delay time of one of the second fixed delay elements.Type: ApplicationFiled: May 26, 2009Publication date: December 31, 2009Applicant: FUJITSU MICROELECTRONICS LIMITEDInventor: Yoshikazu Miyamoto
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Publication number: 20090247798Abstract: The norbornene derivative of the present invention is represented by the following formula (Im). According to the present invention, a novel norbornene derivative that is useful as a precursor monomer for preparing a cycloolefin polymer exhibiting excellent transparency, heat resistance and low-water absorption properties and having been freely controlled in the birefringence properties and the wavelength dispersion properties can be provided. According to the present invention, further, a norbornene ring-opened (co)polymer having excellent transparency and heat resistance, exhibiting high solubility in organic solvents and having specific birefringence properties and wavelength dependence, and a process for preparing the ring-opened (co)polymer can be provided.Type: ApplicationFiled: April 1, 2009Publication date: October 1, 2009Applicant: JSR CorporationInventors: Yoshikazu Miyamoto, Nobuyuki Miyaki, Kohei Goto, Yuichi Hashiguchi
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Publication number: 20090209705Abstract: Each of the thermoplastic resin composition and the optical film of the present invention comprises a cycloolefin-based polymer (A) and a vinyl-based polymer (B) having a structural unit derived from p-isopropenylphenol. The thermoplastic resin composition and the optical film exhibit excellent compatibility of their components with keeping property of low birefringence inherent in the thermoplastic resin composition comprising the cycloolefln-based polymer and the vinyl-based polymer, and they are excellent in weathering resistance and heat resistance.Type: ApplicationFiled: September 22, 2005Publication date: August 20, 2009Applicant: JSR CORPORATIONInventors: Motoki Okaniwa, Yoshikazu Miyamoto, Ichiro Kajiwara, Yoshimi Suwa, Nobuyuki Miyaki, Naoyuki Kawashima
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Patent number: 7541411Abstract: The norbornene derivative of the present invention is represented by the following formula (Im). According to the present invention, a novel norbornene derivative that is useful as a precursor monomer for preparing a cycloolefin polymer exhibiting excellent transparency, heat resistance and low-water absorption properties and having been freely controlled in the birefringence properties and the wavelength dispersion properties can be provided. According to the present invention, further, a norbornene ring-opened (co)polymer having excellent transparency and heat resistance, exhibiting high solubility in organic solvents and having specific birefringence properties and wavelength dependence, and a process for preparing the ring-opened (co)polymer can be provided.Type: GrantFiled: April 27, 2004Date of Patent: June 2, 2009Assignee: JSR CorporationInventors: Yoshikazu Miyamoto, Nobuyuki Miyaki, Kohei Goto, Yuichi Hashiguchi
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Publication number: 20080177002Abstract: The present invention is intended to provide a thermoplastic resin composition which is inhibited from suffering phase separation and from which an optical film having excellent transparency is readily obtained, an optical film containing the composition as a main component, a retardation film which is a film obtained by stretching the optical film and exhibits positive wavelength dependence and has a small coefficient of photoelasticity and transparency, and a process for producing the retardation film.Type: ApplicationFiled: December 27, 2005Publication date: July 24, 2008Applicant: JSR CORPORATIONInventors: Nobuyuki Miyaki, Yoshikazu Miyamoto, Naoyui Kawashima, Ichiro Kajiwara, Soichi Yoshida
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Publication number: 20080095955Abstract: The thermoplastic resin composition of the present invention comprises (A) a cycloolefin-based polymer and (B) a vinyl-based polymer having a polar group, has a glass transition temperature of not lower than 100° C. and has a difference in glass transition temperature between the polymers (A) and (B) of less than 50° C. The optical film of the present invention comprises the thermoplastic resin composition of the invention. According to the present invention, it is possible to improve development of retardation at a low stress in the film stretching while retaining excellent heat resistance and optical properties and maintaining wavelength dispersion properties.Type: ApplicationFiled: December 22, 2005Publication date: April 24, 2008Applicant: JSR CORPORATIONInventors: Nobuyuki Miyaki, Yoshikazu Miyamoto, Naoyuki Kawashima, Ichiro Kajiwara
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Publication number: 20070282077Abstract: The present invention is intended to provide a thermoplastic resin composition which exhibits excellent compatibility while retaining low birefringence and is excellent in weathering resistance and heat resistance, an optical film which is obtained from the thermoplastic resin composition and a retardation film which is excellent in weathering resistance and heat resistance and has reciprocal wavelength dispersion properties. The thermoplastic resin composition comprises a vinyl-based polymer (A) having a unit represented by the following formula (I) and a cycloolefin-based polymer (B). wherein R1 to R3 are each a hydrogen atom, a halogen atom, a substituted or unsubstituted hydrocarbon group of 1 to 30 carbon atoms which may have a linkage containing an oxygen atom, a sulfur atom, a nitrogen atom or a silicon atom, or a polar group, and n is 0 or a positive integer.Type: ApplicationFiled: December 27, 2005Publication date: December 6, 2007Applicant: JSR CorporationInventors: Yoshikazu Miyamoto, Nobuyuki Miyaki, Naoyuki Kawashima, Ichiro Kajiwara
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Patent number: 7230058Abstract: The disclosure is directed to a partially hydrogenated ring-opened polynorbornene and a process for making the same. The ring-opened polynorbornene is low in birefringence, high in wavelength dependency about birefringence and excellent in transparency and heat resistance.Type: GrantFiled: February 27, 2006Date of Patent: June 12, 2007Assignee: JSR CorporationInventors: Nobuyuki Miyaki, Yoshikazu Miyamoto, Souichi Yoshida, Yuichi Hashiguchi
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Publication number: 20070065747Abstract: The norbornene derivative of the present invention is represented by the following formula (Im). According to the present invention, a novel norbornene derivative that is useful as a precursor monomer for preparing a cycloolefin polymer exhibiting excellent transparency, heat resistance and low-water absorption properties and having been freely controlled in the birefringence properties and the wavelength dispersion properties can be provided. According to the present invention, further, a norbornene ring-opened (co)polymer having excellent transparency and heat resistance, exhibiting high solubility in organic solvents and having specific birefringence properties and wavelength dependence, and a process for preparing the ring-opened (co)polymer can be provided.Type: ApplicationFiled: April 27, 2004Publication date: March 22, 2007Applicant: JSR CorporationInventors: Yoshikazu Miyamoto, Nobuyuki Miyaki, Kohei Goto, Yuichi Hashiguchi
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Patent number: 7157523Abstract: The disclosure is directed to a partially hydrogenated ring-opened polynorbornene and a process for making the same. The ring-opened polynorbornene is low in birefringence, high in wavelength dependency about birefringence and excellent in transparency and heat resistance.Type: GrantFiled: November 12, 2003Date of Patent: January 2, 2007Assignee: JSR CorporationInventors: Nobuyuki Miyaki, Yoshikazu Miyamoto, Souichi Yoshida, Yuichi Hashiguchi
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Publication number: 20060189771Abstract: The invention provides a ring-opened norbornene polymer that is relatively small in birefringence, has specific wavelength dependency about birefringence and is excellent in transparency and heat resistance.Type: ApplicationFiled: February 27, 2006Publication date: August 24, 2006Applicant: JSR CorporationInventors: Nobuyuki Miyaki, Yoshikazu Miyamoto, Souichi Yoshida, Yuichi Hashiguchi