Patents by Inventor Hajime Nishimura
Hajime Nishimura 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).
-
Patent number: 11170983Abstract: The present embodiment relates to an electron multiplier having a structure configured to suppress and stabilize a variation of a resistance value in a wider temperature range. The electron multiplier includes a resistance layer sandwiched between a substrate and a secondary electron emitting layer and configured using a Pt layer two-dimensionally formed on a layer formation surface which is coincident with or substantially parallel to a channel formation surface of the substrate. The resistance layer has a temperature characteristic within a range in which a resistance value at ?60° C. is 10 times or less, and a resistance value at +60° C. is 0.25 times or more, relative to a resistance value at a temperature of 20° C.Type: GrantFiled: April 10, 2018Date of Patent: November 9, 2021Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Daichi Masuko, Hajime Nishimura, Yasumasa Hamana, Hiroyuki Watanabe
-
Patent number: 11021838Abstract: A sheet material has good mechanical properties, flexibility, lightweight properties, and quality, and also relates to a production method therefor. The sheet material includes, as constitutional components, an elastic polymer and nonwoven fabric composed mainly of ultrafine hollow fiber with an average monofilament diameter in the range of 0.05 to 10 ?m, the ultrafine hollow fiber containing 2 to 60 hollows.Type: GrantFiled: August 18, 2015Date of Patent: June 1, 2021Assignee: Toray Industries, Inc.Inventors: Hajime Nishimura, Yukihiro Matsuzaki, Makoto Nishimura, Makoto Kaneko
-
Patent number: 11011358Abstract: The present embodiment relates to an electron multiplier having a structure configured to suppress and stabilize a variation of a resistance value in a wider temperature range. In the electron multiplier, a resistance layer sandwiched between a substrate and a secondary electron emitting layer formed of an insulating material includes a metal layer in which a plurality of metal particles formed of a metal material whose resistance value has a positive temperature characteristic are two-dimensionally arranged on a layer formation surface, which is coincident with or substantially parallel to a channel formation surface of the substrate, in the state of being adjacent to each other with a part of the first insulating material interposed therebetween, the metal layer having a thickness set to 5 to 40 angstroms.Type: GrantFiled: April 10, 2018Date of Patent: May 18, 2021Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Daichi Masuko, Hajime Nishimura, Yasumasa Hamana, Hiroyuki Watanabe
-
Publication number: 20210134572Abstract: The present embodiment relates to an electron multiplier having a structure configured to suppress and stabilize a variation of a resistance value in a wider temperature range. The electron multiplier includes a resistance layer sandwiched between a substrate and a secondary electron emitting layer and configured using a Pt layer two-dimensionally formed on a layer formation surface which is coincident with or substantially parallel to a channel formation surface of the substrate. The resistance layer has a temperature characteristic within a range in which a resistance value at ?60° C. is 10 times or less, and a resistance value at +60° C. is 0.25 times or more, relative to a resistance value at a temperature of 20° C.Type: ApplicationFiled: April 10, 2018Publication date: May 6, 2021Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Daichi MASUKO, Hajime NISHIMURA, Yasumasa HAMANA, Hiroyuki WATANABE
-
Publication number: 20210118655Abstract: The present embodiment relates to an electron multiplier having a structure configured to suppress and stabilize a variation of a resistance value in a wider temperature range. In the electron multiplier, a resistance layer sandwiched between a substrate and a secondary electron emitting layer comprised of an insulating material includes a metal layer in which a plurality of metal particles comprised of a metal material whose resistance value has a positive temperature characteristic are two-dimensionally arranged on a layer formation surface, which is coincident with or substantially parallel to a channel formation surface of the substrate, in the state of being adjacent to each other with a part of the first insulating material interposed therebetween, the metal layer having a thickness set to 5 to 40 angstroms.Type: ApplicationFiled: April 10, 2018Publication date: April 22, 2021Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Daichi MASUKO, Hajime NISHIMURA, Yasumasa HAMANA, Hiroyuki WATANABE
-
Patent number: 10818484Abstract: A microchannel plate is provided with a substrate including a front surface, a rear surface, and a side surface, a plurality of channels penetrating from the front surface to the rear surface of the substrate, a first film provided on at least an inner wall surface of the channel, a second film provided on at least a part of the first film, and electrode layers provided on the front surface and the rear surface of the substrate. The first film is made of MgO, the second film is made of SiO2, and the second film is thinner than the first film.Type: GrantFiled: January 23, 2018Date of Patent: October 27, 2020Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Takaaki Nagata, Yasumasa Hamana, Hajime Nishimura, Daichi Masuko
-
Patent number: 10727035Abstract: The present embodiment relates to an electron multiplier having a structure configured to suppress and stabilize a variation of a resistance value in a wider temperature range. In the electron multiplier, a resistance layer sandwiched between a substrate and a secondary electron emitting layer comprised of an insulating material is configured using a single metal layer in which a plurality of metal particles comprised of a metal material whose resistance value has a positive temperature characteristic are two-dimensionally arranged on a layer formation surface, which is coincident with or substantially parallel to a channel formation surface of the substrate, in the state of being adjacent to each other with a part of the first insulating material interposed therebetween.Type: GrantFiled: April 10, 2018Date of Patent: July 28, 2020Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Daichi Masuko, Yasumasa Hamana, Hajime Nishimura, Hiroyuki Watanabe
-
Publication number: 20200176236Abstract: The present embodiment relates to an electron multiplier having a structure configured to suppress and stabilize a variation of a resistance value in a wider temperature range. In the electron multiplier, a resistance layer sandwiched between a substrate and a secondary electron emitting layer comprised of an insulating material is configured using a single metal layer in which a plurality of metal particles comprised of a metal material whose resistance value has a positive temperature characteristic are two-dimensionally arranged on a layer formation surface, which is coincident with or substantially parallel to a channel formation surface of the substrate, in the state of being adjacent to each other with a part of the first insulating material interposed therebetween.Type: ApplicationFiled: April 10, 2018Publication date: June 4, 2020Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Daichi MASUKO, Yasumasa HAMANA, Hajime NISHIMURA, Hiroyuki WATANABE
-
Patent number: 10626548Abstract: A base body for an artificial leather includes an intertwined fiber body mainly including an ultrafine fiber having a 0.01 to 10 ?m fiber diameter and an elastic polymer, the ultrafine fiber including, as a constituent polymer, a polyester obtained from a dicarboxylic acid and/or an ester-forming derivative thereof, and a diol, the polyester containing 15 to 500 ppm of a 1,2-propanediol-derived component.Type: GrantFiled: August 29, 2013Date of Patent: April 21, 2020Assignee: Toray Industries, Inc.Inventors: Hajime Nishimura, Yukihiro Matsuzaki, Makato Nishimura
-
Publication number: 20200027709Abstract: A microchannel plate is provided with a substrate including a front surface, a rear surface, and a side surface, a plurality of channels penetrating from the front surface to the rear surface of the substrate, a first film provided on at least an inner wall surface of the channel, a second film provided on at least a part of the first film, and electrode layers provided on the front surface and the rear surface of the substrate. The first film is made of MgO, the second film is made of SiO2, and the second film is thinner than the first film.Type: ApplicationFiled: January 23, 2018Publication date: January 23, 2020Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Takaaki NAGATA, Yasumasa HAMANA, Hajime NISHIMURA, Daichi MASUKO
-
Patent number: 10340129Abstract: A microchannel plate is provided with a substrate including a front surface, a rear surface, and a side surface, a plurality of channels penetrating from the front surface to the rear surface of the substrate, a first film provided on at least an inner wall surface of the channel, a second film provided on the first film, and electrode layers provided on the front surface and the rear surface of the substrate. The first film is made of Al2O3. The second film is made of SiO2. The first film is thicker than the second film.Type: GrantFiled: August 9, 2016Date of Patent: July 2, 2019Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Takaaki Nagata, Yasumasa Hamana, Hajime Nishimura, Kimitsugu Nakamura
-
Publication number: 20180247802Abstract: A microchannel plate is provided with a substrate including a front surface, a rear surface, and a side surface, a plurality of channels penetrating from the front surface to the rear surface of the substrate, a first film provided on at least an inner wall surface of the channel, a second film provided on the first film, and electrode layers provided on the front surface and the rear surface of the substrate. The first film is made of Al2O3. The second film is made of SiO2. The first film is thicker than the second film.Type: ApplicationFiled: August 9, 2016Publication date: August 30, 2018Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Takaaki NAGATA, Yasumasa HAMANA, Hajime NISHIMURA, Kimitsugu NAKAMURA
-
Patent number: 9970129Abstract: The present invention provides a conjugated fiber suitable for use as a crimped fiber capable of producing an artificial leather having highly dense texture and good quality. The present invention also provides a base body for an artificial leather and an artificial leather produced by using such conjugated fiber. The conjugated fiber of the present invention includes a conjugated fiber comprising a readily soluble polyester component and a less readily soluble component, and the readily soluble polyester component comprises a copolymerized polyester having 5 to 10% by mole of 5-sodium sulfoisophthalate copolymerized therewith and the readily soluble polyester component contains a polyalkylene glycol. The polyalkylene glycol is in the form of streaks extending in longitudinal direction of the fiber in the longitudinal cross section of the conjugated fiber.Type: GrantFiled: December 13, 2012Date of Patent: May 15, 2018Assignee: TORAY INDUSTRIES, INC.Inventors: Hajime Nishimura, Yukihiro Matsuzaki, Makoto Nishimura
-
Publication number: 20170254018Abstract: A sheet material has good mechanical properties, flexibility, lightweight properties, and quality, and also relates to a production method therefor. The sheet material includes, as constitutional components, an elastic polymer and nonwoven fabric composed mainly of ultrafine hollow fiber with an average monofilament diameter in the range of 0.05 to 10 ?m, the ultrafine hollow fiber containing 2 to 60 hollows.Type: ApplicationFiled: August 18, 2015Publication date: September 7, 2017Inventors: Hajime Nishimura, Yukihiro Matsuzaki, Makoto Nishimura, Makoto Kaneko
-
Patent number: 9707663Abstract: A polishing pad is provided with a compression elastic modulus of 0.17 MPa or more and 0.32 MPa or less produced by preparing a nonwoven fabric formed of bundles of ultrafine fibers with an average monofilament diameter of 3.0 ?m or more and 8.0 ?m or less, preparing a polishing pad base by impregnating the nonwoven fabric with a polyurethane based elastomer in an amount of 20 mass % or more and 50 mass % or less relative to the mass of the polishing pad base, and laminating the polishing pad base with a porous polyurethane layer containing wet-solidified polyurethane as primary component which has openings with an average opening diameter of 10 ?m or more and 90 ?m or less in its surface to serve as polishing surface layer.Type: GrantFiled: January 30, 2012Date of Patent: July 18, 2017Assignees: Toray Industries, Inc., Toray Coatex Co., Ltd.Inventors: Kuniyasu Shiro, Masaharu Wada, Hiroyasu Kato, Hajime Nishimura, Satoshi Yanagisawa, Yukihiro Matsuzaki
-
Publication number: 20170183815Abstract: The present invention provides an artificial leather including an entangled fiber mass of ultrafine fibers having a monofilament fineness of 0.01 dtex or more and 0.50 dtex or less and a polymeric elastomer; wherein at least one surface is napped; the cross-sectional profile curve of the napped surface has an arithmetic mean height Pa of 26 ?m or more and 100 ?m or less; the arithmetic mean height Pa of the cross-sectional profile curve of the opposite surface is 20% or more and 80% or less of the cross-sectional roughness Pa of the napped side; the existence frequency of asperity peaks found in the cross-sectional profile curve of the napped surface is 1.8 or more and 20 or less per 1.0 mm; and a woven or knitted fabric lamination is present near the opposite surface at a depth position of 10% or more and 50% or less.Type: ApplicationFiled: March 20, 2015Publication date: June 29, 2017Applicant: TORAY INDUSTRIES, INC.Inventors: Akito Kuroda, Tomoharu Hirose, Masaru Ueno, Koji Yamano, Katsuya Okajima, Yukihiro Matsuzaki, Yu Matsuoka, Hajime Nishimura, Satoshi Yanagisawa
-
Publication number: 20150252524Abstract: A base body for an artificial leather includes an intertwined fiber body mainly including an ultrafine fiber having a 0.01 to 10 ?m fiber diameter and an elastic polymer, the ultrafine fiber including, as a constituent polymer, a polyester obtained from a dicarboxylic acid and/or an ester-forming derivative thereof, and a diol, the polyester containing 15 to 500 ppm of a 1,2-propanediol-derived component.Type: ApplicationFiled: August 29, 2013Publication date: September 10, 2015Inventors: Hajime Nishimura, Yukihiro Matsuzaki, Makoto Nishimura
-
Publication number: 20140370283Abstract: The present invention provides a conjugated fiber suitable for use as a crimped fiber capable of producing an artificial leather having highly dense texture and good quality. The present invention also provides a base body for an artificial leather and an artificial leather produced by using such conjugated fiber. The conjugated fiber of the present invention includes a conjugated fiber comprising a readily soluble polyester component and a less readily soluble component, and the readily soluble polyester component comprises a copolymerized polyester having 5 to 10% by mole of 5-sodium sulfoisophthalate copolymerized therewith and the readily soluble polyester component contains a polyalkylene glycol. The polyalkylene glycol is in the form of streaks extending in longitudinal direction of the fiber in the longitudinal cross section of the conjugated fiber.Type: ApplicationFiled: December 13, 2012Publication date: December 18, 2014Applicant: TORAY INDUSTRIES, INC.Inventors: Hajime Nishimura, Yukihiro Matsuzaki, Makoto Nishimura
-
Publication number: 20130331014Abstract: A polishing pad is provided with a compression elastic modulus of 0.17 MPa or more and 0.32 MPa or less produced by preparing a nonwoven fabric formed of bundles of ultrafine fibers with an average monofilament diameter of 3.0 ?m or more and 8.0 ?m or less, preparing a polishing pad base by impregnating the nonwoven fabric with a polyurethane based elastomer in an amount of 20 mass % or more and 50 mass % or less relative to the mass of the polishing pad base, and laminating the polishing pad base with a porous polyurethane layer containing wet-solidified polyurethane as primary component which has openings with an average opening diameter of 10 ?m or more and 90 ?m or less in its surface to serve as polishing surface layer.Type: ApplicationFiled: January 30, 2012Publication date: December 12, 2013Applicants: TORAY INDUSTRIES, INC., TORAY COATEX CO., LTDInventors: Kuniyasu Shiro, Masaharu Wada, Hiroyasu Kato, Hajime Nishimura, Satoshi Yanagisawa, Yukihiro Matsuzaki
-
Patent number: 8605563Abstract: An optical disc device comprising: a controller for reading data from an optical disc having a plurality of recording layers, wherein: the controller, in shifting a focus of the laser light from a first layer to a second layer, performs a first change that changes a setting on the high frequency signal to a predetermined value at which the high frequency signal is superimposed to suppress peak power of the drive signal if a light density of the second layer is higher than a light density of the first layer; the controller shifts the focus from the first layer to the second layer; and the controller, after the focus has been shifted, performs a second change that changes the setting on the high frequency signal to a predetermined value at which the high frequency signal is superimposed to increase the peak power of the drive signal.Type: GrantFiled: December 3, 2010Date of Patent: December 10, 2013Assignee: Hitachi—LG Data Storage, Inc.Inventors: Shuichi Minamiguchi, Hiroharu Sakai, Hajime Nishimura