Patents by Inventor Takahiro Kitahara
Takahiro Kitahara 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: 11072580Abstract: A sulfuric acid ester containing a plurality of carbonyl groups or a salt thereof, and a surfactant. The sulfuric acid ester is a compound represented by the following formula: R1—C(?O)—R2—C(?O)—R3—OSO3X wherein R1, R2 and R3 are as defined herein; X is H, a metal atom, NR44, imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent, where R4s are each H or an organic group and are the same as or different from each other; and any two of R1, R2, and R3 optionally bind to each other to form a ring.Type: GrantFiled: September 29, 2017Date of Patent: July 27, 2021Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Satoru Yoneda, Manabu Fujisawa, Kazuya Asano, Takahiro Kitahara, Masahiro Higashi, Akiyoshi Yamauchi, Sumi Ishihara, Yosuke Kishikawa
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Publication number: 20210115224Abstract: A method for producing a fluoropolymer which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer. The surfactant includes at least one selected from the group consisting of a surfactant represented by R1a—CO—R2 a—CO—R3a—OSO3Xa and a surfactant represented by R1b—CO—(CR2b2)n—(OR3b)p—(CR4b2)q-L-OSO3Xb.Type: ApplicationFiled: March 30, 2018Publication date: April 22, 2021Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Taketo KATO, Satoru YONEDA, Manabu FUJISAWA, Kazuya ASANO, Takahiro KITAHARA, Masahiro HIGASHI, Akiyoshi YAMAUCHI, Sumi ISHIHARA, Yosuke KISHIKAWA, Shinnosuke NITTA, Marina NAKANO, Hirotoshi YOSHIDA, Yoshinori NAN BA, Kengo ITO, Chiaki OKUI, Hirokazu AOYAMA, Masamichi SUKEGAWA, Taku YAMANAKA, Hiroyuki SATO, Yuuji TANAKA, Kenji ICHIKAWA, Yohei FUJIMOTO
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Publication number: 20210108008Abstract: A method for producing a fluoropolymer of the invention which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer. The surfactant includes at least one selected from the group consisting of a surfactant represented by R1a—CO—R2a—CO—R3a-Aa and a surfactant represented by R1b—CO—(CR2b2)n—(OR3b)p—(CR4b2)q-L-Ab.Type: ApplicationFiled: March 30, 2018Publication date: April 15, 2021Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Taketo KATO, Satoru YONEDA, Manabu FUJISAWA, Kazuya ASANO, Takahiro KITAHARA, Masahiro HIGASHI, Akiyoshi YAMAUCHI, Sumi ISHIHARA, Yosuke KISHIKAWA, Shinnosuke NITTA, Marina NAKANO, Hirotoshi YOSHIDA, Yoshinori NANBA, Kengo ITO, Chiaki OKUI, Hirokazu AOYAMA, Masamichi SUKEGAWA, Taku YAMANAKA, Yuuji TANAKA, Kenji ICHIKAWA, Yohei FUJIMOTO, Hiroyuki SATO
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Patent number: 10847800Abstract: A binder and an electrode mixture for a secondary battery. The binder contains a fluorine-containing polymer containing a polymerized unit based on vinylidene fluoride, a polymerized unit based on tetrafluoroethylene, and a polymerized unit based on a monomer (2-2) represented by the following formula (2-2): R5R6C?CR7R8CO2Y1??(2-2) wherein R5, R6, and R7 are each independently a hydrogen atom or a C1-C8 hydrocarbon group; R8 is a C1-C8 hydrocarbon group; and Y1 is an inorganic cation and/or an organic cation.Type: GrantFiled: September 27, 2017Date of Patent: November 24, 2020Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Kazuya Asano, Takashi Iguchi, Manabu Fujisawa, Chihiro Shinoda, Tomoyuki Goto, Kazuki Hosoda, Takahiro Kitahara
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Publication number: 20200362077Abstract: An ethylene/tetrafluoroethylene copolymer satisfying the following formula (1), wherein peak intensities, determined by Fourier transform infrared spectroscopy, of vibrations derived from a —CF2H group, a —CF2CH2COF group, a —COF group, a —COOH group, a dimer of a —CF2COOH group and a monomer of a CF2CH2COOH group, a —COOCH3 group, a —CONH2 group, and a —CH2OH group satisfy the following formula (2): 75?tan ?(60)/tan ?(5)×100?225 ??(1) PIA/(PIB+PIC+PID+PIE+PIF+PIG+PIH)?0.60 ??(2) wherein tan ?(60), tan ?(5), PIA, PIB, PIC, PID, PIE, PIF, PIG and PIH are as defined in the specification. Also disclosed is a molded article obtained by molding the ethylene/tetrafluoroethylene copolymer and an electric wire including a core and a coat formed from the ethylene/tetrafluoroethylene copolymer.Type: ApplicationFiled: November 8, 2018Publication date: November 19, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Ryouichi YANO, Tatsuya FUNAOKA, Takahiro KITAHARA, Takashi SEKIGUCHI, Kazunobu UCHIDA, Yuuko TAKANO
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Patent number: 10760973Abstract: An optical sensor includes a light receiving unit and a calculating unit. The light receiving unit includes a plurality of light receiving elements and a plurality of color filters. The plurality of light receiving elements include a first light receiving element and a second light receiving element through which a photocurrent flows when receiving light. The plurality of color filters include a yellow filter that covers a light receiving surface of the first light receiving element and a red filter that covers a light receiving surface of the second light receiving element. The calculating unit calculates an intensity of a yellow wavelength band based on a difference between a first output signal obtained from the photocurrent of the first light receiving element and a second output signal obtained from the photocurrent of the second light receiving element.Type: GrantFiled: November 5, 2018Date of Patent: September 1, 2020Assignee: ROHM CO., LTD.Inventors: Koji Saito, Takahiro Kitahara, Yoshitsugu Uedaira
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Publication number: 20200243862Abstract: A binder for a secondary battery containing a fluorine-containing polymer (A) and polyvinylidene fluoride (B). The fluorine-containing polymer (A) contains a polymerized unit based on vinylidene fluoride, a polymerized unit based on tetrafluoroethylene, and a polymerized unit based on a monomer (2-2) represented by the following formula (2-2): wherein R5, R6, and R7 are each independently a hydrogen atom or a C1-C8 hydrocarbon group; R8 is a C1-C8 hydrocarbon group; and Y1 is an inorganic cation or an organic cation. Also disclosed is an electrode mixture and an electrode for a secondary battery including the binder, and a secondary battery including the electrode.Type: ApplicationFiled: October 2, 2018Publication date: July 30, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazuki HOSODA, Takahiro KITAHARA, Manabu FUJISAWA, Takashi IGUCHI, Kazuya ASANO, Chihiro SHINODA
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Publication number: 20200172476Abstract: A sulfuric acid ester containing a plurality of carbonyl groups or a salt thereof, and a surfactant. The sulfuric acid ester is a compound represented by the following formula: R1—C(?O)—R2—C(?O)—R3—OSO3X wherein R1, R2 and R3 are as defined herein; X is H, a metal atom, NR44, imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent, where R4s are each H or an organic group and are the same as or different from each other; and any two of R1, R2, and R3 optionally bind to each other to form a ring.Type: ApplicationFiled: September 29, 2017Publication date: June 4, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Satoru YONEDA, Manabu FUJISAWA, Kazuya ASANO, Takahiro KITAHARA, Masahiro HIGASHI, Akiyoshi YAMAUCHI, Sumi ISHIHARA, Yosuke KISHIKAWA
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Publication number: 20200067052Abstract: A secondary battery separator including a porous substrate and a porous film firmly bonded to each other, the porous film being disposed on or above the porous substrate. The porous film contains a fluorine-containing polymer that contains a polymerized unit based on vinylidene fluoride, a polymerized unit based on tetrafluoroethylene, and a polymerized unit based on a monomer represented by the following formula (2-2): R5R6C?CR7R8CO2Y1??(2-2) wherein R5, R6, and R7 are each independently a hydrogen atom or a C1-C8 hydrocarbon group; R8 is a C1-C8 hydrocarbon group; and Y1 is an inorganic cation and/or an organic cation. Also disclosed is a secondary battery including the secondary battery separator; a positive electrode; a negative electrode; and a non-aqueous electrolyte solution.Type: ApplicationFiled: March 27, 2018Publication date: February 27, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takahiro KITAHARA, Manabu FUJISAWA, Takashi IGUCHI, Kazuya ASANO, Chihiro SHINODA
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Publication number: 20190296359Abstract: A binder and an electrode mixture for a secondary battery. The binder contains a fluorine-containing polymer containing a polymerized unit based on vinylidene fluoride, a polymerized unit based on tetrafluoroethylene, and a polymerized unit based on a monomer (2-2) represented by the following formula (2-2): R5R6C?CR7R8CO2Y1??(2-2) wherein R5, R6, and R7 are each independently a hydrogen atom or a C1-C8 hydrocarbon group; R8 is a C1-C8 hydrocarbon group; and Y1 is an inorganic cation and/or an organic cation.Type: ApplicationFiled: September 27, 2017Publication date: September 26, 2019Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazuya ASANO, Takashi IGUCHI, Manabu FUJISAWA, Chihiro SHINODA, Tomoyuki GOTO, Kazuki HOSODA, Takahiro KITAHARA
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Publication number: 20190145826Abstract: An optical sensor includes a light receiving unit and a calculating unit. The light receiving unit includes a plurality of light receiving elements and a plurality of color filters. The plurality of light receiving elements include a first light receiving element and a second light receiving element through which a photocurrent flows when receiving light. The plurality of color filters include a yellow filter that covers a light receiving surface of the first light receiving element and a red filter that covers a light receiving surface of the second light receiving element. The calculating unit calculates an intensity of a yellow wavelength band based on a difference between a first output signal obtained from the photocurrent of the first light receiving element and a second output signal obtained from the photocurrent of the second light receiving element.Type: ApplicationFiled: November 5, 2018Publication date: May 16, 2019Inventors: Koji SAITO, Takahiro KITAHARA, Yoshitsugu UEDAIRA
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Publication number: 20180259389Abstract: A photodetector includes a semiconductor substrate; a light receiving part for signal detection and an infrared light receiving part which are formed in the semiconductor substrate and are covered at least by first color filters having a common color; and second color filters which overlap with the first color filters on the infrared light receiving part and are configured to block light in a wavelength range transmitting through the first color filters.Type: ApplicationFiled: May 9, 2018Publication date: September 13, 2018Applicant: Rohm Co., Ltd.Inventors: Yoshitsugu Uedaira, Takahiro Kitahara
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Patent number: 9989408Abstract: A photodetector includes a semiconductor substrate; a light receiving part for signal detection and an infrared light receiving part which are formed in the semiconductor substrate and are covered at least by first color filters having a common color; and second color filters which overlap with the first color filters on the infrared light receiving part and are configured to block light in a wavelength range transmitting through the first color filters.Type: GrantFiled: December 9, 2015Date of Patent: June 5, 2018Assignee: Rohm Co., Ltd.Inventors: Yoshitsugu Uedaira, Takahiro Kitahara
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Patent number: 9989173Abstract: The present invention provides a flexible pipe having excellent blister resistance in a high-temperature and high-pressure environment even though including a thick resin pipe. The flexible pipe includes a resin pipe having a thickness of greater than 5 mm. The resin pipe is formed from a resin having a CO2 permeability coefficient P(CO2) of 20×10?9 cm3·cm/cm2·s·cmHg or lower at 150° C., a CH4 permeability coefficient P(CH4) of 10×10?9 cm3·cm/cm2·s·cmHg or lower at 150° C., a ratio D(CO2)/S(CO2) between a CO2 diffusion coefficient D(CO2) and a CO2 solubility coefficient S(CO2) of 3×10?5 Pa·m2/s or higher at 150° C., and a ratio D(CH4)/S(CH4) between a CH4 diffusion coefficient D(CH4) and a CH4 solubility coefficient S(CH4) of higher than 15×10?5 Pa·m2/s at 150° C.Type: GrantFiled: October 6, 2015Date of Patent: June 5, 2018Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Shinya Murakami, Takeshi Inaba, Takahiro Kitahara, Yuuki Kuwajima
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Patent number: 9920863Abstract: The present invention provides a flexible pipe having excellent blister resistance in a high-temperature and high-pressure environment even though including a thick resin pipe. The flexible pipe includes a resin pipe having a thickness of greater than 5 mm. The resin pipe is formed from a resin having a CO2 permeability coefficient P(CO2) of 20×10?9 cm3·cm/cm2·s·cmHg or lower at 150° C., a CH4 permeability coefficient P(CH4) of 10×10?9 cm3·cm/cm2·s·cmHg or lower at 150° C., a ratio D(CO2)/S(CO2) between a CO2 diffusion coefficient D(CO2) and a CO2 solubility coefficient S(CO2) of 3×10?5 Pa·m2/s or higher at 150° C., and a ratio D(CH4)/S(CH4) between a CH4 diffusion coefficient D(CH4) and a CH4 solubility coefficient S(CH4) of higher than 15×10?5 Pa·m2/s at 150° C.Type: GrantFiled: October 6, 2015Date of Patent: March 20, 2018Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Shinya Murakami, Takeshi Inaba, Takahiro Kitahara, Yuuki Kuwajima
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Patent number: 9873781Abstract: The present invention aims to provide an acrylic rubber composition capable of giving an acrylic rubber molded product good in low-friction properties and non-sticking properties. The present invention relates to an acrylic rubber composition containing an acrylic rubber (A) and a fluororesin (B), the fluororesin (B) being a perfluororesin.Type: GrantFiled: January 10, 2013Date of Patent: January 23, 2018Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Tomihiko Yanagiguchi, Yasuhiro Nakano, Haruhisa Masuda, Takahiro Kitahara
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Publication number: 20170307113Abstract: The present invention provides a flexible pipe having excellent blister resistance in a high-temperature and high-pressure environment even though including a thick resin pipe. The flexible pipe includes a resin pipe having a thickness of greater than 5 mm. The resin pipe is formed from a resin having a CO2 permeability coefficient P(CO2) of 20×10?9 cm3·cm/cm2·s·cmHg or lower at 150° C., a CH4 permeability coefficient P(CH4) of 10×10?9 cm3·cm/cm2·s·cmHg or lower at 150° C., a ratio D(CO2)/S(CO2) between a CO2 diffusion coefficient D(CO2) and a CO2 solubility coefficient S(CO2) of 3×10?5 Pa·m2/s or higher at 150° C., and a ratio D(CH4)/S(CH4) between a CH4 diffusion coefficient D(CH4) and a CH4 solubility coefficient S(CH4) of higher than 15×10?5 Pa·m2/s at 150° C.Type: ApplicationFiled: October 6, 2015Publication date: October 26, 2017Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shinya MURAKAMI, Takeshi INABA, Takahiro KITAHARA, Yuuki KUWAJIMA
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Patent number: 9725534Abstract: An object of the present invention it to provide a novel fluororesin that has excellent mechanical strength and chemical resistance, and very low permeability at high temperature. The fluorine resin is a copolymer that includes copolymerized units derived from tetrafluoroethylene, vinylidene fluoride, and an ethylenically unsaturated monomer other than tetrafluoroethylene and vinylidene fluoride. The fluororesin has a storage modulus E?, as measured at 170° C. by a dynamic viscoelasticity analysis, in the range of 60 to 400 MPa.Type: GrantFiled: December 23, 2014Date of Patent: August 8, 2017Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Takahiro Kitahara, Takuma Kawabe
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Patent number: 9515109Abstract: A photodetection device of the present invention includes a semiconductor substrate which is defined such that a first light-receiving portion and a second light-receiving portion are spaced from one another, and an optical filter which is formed on the semiconductor substrate, and includes a first filter which is disposed so as to cover the first light-receiving portion, to selectively allow an optic element in a first wavelength band to transmit through, and a second filter which is disposed so as to cover the second light-receiving portion, to selectively allow an optic element in a second wavelength band different from the first wavelength band, to transmit through, and the optical filter has a filter laminated structure which is defined such that edge portions of the first filter and the second filter overlap one another on a boundary region between the first light-receiving portion and the second light-receiving portion.Type: GrantFiled: September 16, 2015Date of Patent: December 6, 2016Assignee: Rohm Co., Ltd.Inventors: Yoshitsugu Uedaira, Takahiro Kitahara
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Patent number: 9444104Abstract: The present invention aims to provide an electrode mixture which shows little change in viscosity even after 24 hours from the preparation of the mixture and enables production of an electrode having a high electrode density and excellent flexibility and is capable of giving excellent electric properties to the resulting cell. The present invention relates to an electrode mixture including a powdery electrode material; a binder; and an organic solvent, the binder including a fluorine-containing polymer including a polymer unit based on vinylidene fluoride and a polymer unit based on tetrafluoroethylene, the fluorine-containing polymer including the polymer unit based on vinylidene fluoride in an amount of 80.0 to 89.0 mol % based on all the polymer units, and the organic solvent being N-methyl-2-pyrolidone and/or N,N-dimethylacetamide.Type: GrantFiled: May 20, 2013Date of Patent: September 13, 2016Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Toshiki Ichisaka, Takashi Iguchi, Tomoyuki Fukatani, Kazunobu Uchida, Takuji Ishikawa, Norimasa Uesugi, Takahiro Kitahara