Patents by Inventor Tsutomu Yoshimura

Tsutomu Yoshimura 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).

  • Publication number: 20210055653
    Abstract: Provided are an actinic ray-sensitive or radiation-sensitive resin composition containing a resin (A), in which the resin (A) includes a repeating unit having an acidic group and a repeating unit having an acid-decomposable group, a content of the repeating unit having an acidic group is 15% by mole or more with respect to all the repeating units in the resin (A), a content of the repeating unit having an acid-decomposable group is more than 20% by mole with respect to all the repeating units in the resin (A), a glass transition temperature of the resin (A) is 145° C. or lower, and the actinic ray-sensitive or radiation-sensitive resin composition is used for formation of a film having a film thickness of 2 ?m or more; and a resist film, a pattern forming method, and a method for manufacturing an electronic device, each using the actinic ray-sensitive or radiation-sensitive resin composition.
    Type: Application
    Filed: March 3, 2020
    Publication date: February 25, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Tsutomu YOSHIMURA, Yasunori YONEKUTA, Naoya HATAKEYAMA, Kohei HIGASHI, Yoichi NISHIDA
  • Publication number: 20210002391
    Abstract: A method for recovering an unreacted ?,?-ethylenically unsaturated nitrile monomer contained in a latex of a nitrile rubber obtained by emulsion polymerizing a monomer mixture comprising an ?,?-ethylenically unsaturated nitrile monomer and a carboxyl group-containing monomer is provided. The method includes the steps of: adjusting a pH of the latex of the carboxyl group-containing nitrile rubber to 6.5 or more; decompressing the latex of the carboxyl group-containing nitrile rubber having the pH adjusted to 6.5 or more under a heating condition; and recovering a component evaporated by the decompression under the heating condition.
    Type: Application
    Filed: March 13, 2019
    Publication date: January 7, 2021
    Applicant: ZEON CORPORATION
    Inventors: Tsutomu YOSHIMURA, Tomohito YAMANOUE
  • Publication number: 20200301281
    Abstract: A resist composition includes a resin (A) including at least one repeating unit selected from the group consisting of a repeating unit represented by General Formula (1) as defined herein and a repeating unit represented by General Formula (2) as defined herein, and a repeating unit having an acid-decomposable group.
    Type: Application
    Filed: June 9, 2020
    Publication date: September 24, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Yasunori Yonekuta, Naoya Hatakeyama, Tsutomu Yoshimura
  • Publication number: 20200283557
    Abstract: A method for producing a carboxyl group-containing nitrile rubber including the steps of: polymerizing a monomer mixture including an ?,?-ethylenically unsaturated nitrile monomer and a carboxyl group-containing monomer in a solvent; terminating a polymerization reaction by adding a nitrous acid salt and a water-insoluble hydroquinone as polymerization terminators to the polymerization system, thereby obtaining a dispersion of the carboxyl group-containing nitrile rubber having a pH of 7 or below; and coagulating the dispersion of the carboxyl group-containing nitrile rubber, thereby obtaining the carboxyl group-containing nitrile rubber in the solid state, wherein the amount of the nitrous acid salt to be used is 0.15 parts by weight or less relative to 100 parts by weight of the monomer mixture used in the polymerization reaction.
    Type: Application
    Filed: March 16, 2018
    Publication date: September 10, 2020
    Applicant: ZEON CORPORATION
    Inventor: Tsutomu YOSHIMURA
  • Publication number: 20200031955
    Abstract: A method of producing a carboxyl group-containing nitrile rubber including a coagulation step of coagulating a carboxyl group-containing nitrile rubber component by mixing a monovalent metal salt and a polymer flocculating agent into a carboxyl group-containing nitrile rubber latex having an iodine value of 120 or less, wherein the monovalent metal salt is compounded in an amount of 3 to 25 parts by weight and the polymer flocculating agent is compounded in an amount of 0.
    Type: Application
    Filed: March 23, 2018
    Publication date: January 30, 2020
    Applicant: ZEON CORPORATION
    Inventors: Taiki HERAI, Tsutomu YOSHIMURA
  • Publication number: 20200019058
    Abstract: An actinic ray-sensitive or radiation-sensitive resin composition includes: a resin, in which the actinic ray-sensitive or radiation-sensitive resin composition has a concentration of a solid content of 10% by mass or more, and in which the resin includes: a repeating unit A which is a repeating unit derived from a monomer allowing a homopolymer formed therefrom to have a glass transition temperature of 50° C. or lower, and a repeating unit B which is a repeating unit having an acid-decomposable group, a content of the repeating unit B is 20% by mole or less with respect to all the repeating units in the resin, and at least one of the repeating unit contained in the resin is a repeating unit having an aromatic ring.
    Type: Application
    Filed: September 23, 2019
    Publication date: January 16, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Naoya HATAKEYAMA, Yasunori YONEKUTA, Tsutomu YOSHIMURA, Kohei HIGASHI, Yoichi NISHIDA
  • Publication number: 20160185890
    Abstract: A nitrile copolymer rubber obtained by emulsion polymerization using 2,2,4,6,6-pentamethylheptane-4-thiol as a chain transfer agent and which has a polymer pH of 8.5 or less is provided. The polymer pH is preferably 8.0 or less. According to the present invention, a nitrile copolymer rubber which is able to give a cross-linked rubber which is excellent in heat resistance and compression set resistance can be provided.
    Type: Application
    Filed: September 30, 2014
    Publication date: June 30, 2016
    Applicant: ZEON CORPORATION
    Inventor: Tsutomu YOSHIMURA
  • Patent number: 8609753
    Abstract: An acrylic rubber composition which contains, with respect to 100 parts by weight of acrylic rubber, a compound which is expressed by the following general formula (1) in 0.1 to 50 parts by weight and a cross-linking agent in 0.05 to 20 parts by weight is provided. (where, in said general formula (1), Y indicates a chemical single bond or —SO2—. Ra and Rb respectively independently indicate substitutable C1 to C30 organic groups. Za and Zb respectively independently indicate chemical single bonds or —SO2—. n and m respectively independently are 0 or 1, at least one of n and m being 1).
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 17, 2013
    Assignee: Zeon Corporation
    Inventors: Tomonori Ogawa, Masanobu Shinohara, Tsutomu Yoshimura, Kei Sakamoto, Satoshi Kiriki
  • Publication number: 20120302674
    Abstract: An acrylic rubber composition which contains, with respect to 100 parts by weight of acrylic rubber, a compound which is expressed by the following general formula (1) in 0.1 to 50 parts by weight and a cross-linking agent in 0.05 to 20 parts by weight is provided. (where, in said general formula (1), Y indicates a chemical single bond or —SO2—. Ra and Rb respectively independently indicate substitutable C1 to C30 organic groups. Za and Zb respectively independently indicate chemical single bonds or —SO2—.
    Type: Application
    Filed: January 28, 2011
    Publication date: November 29, 2012
    Inventors: Tomonori Ogawa, Masanobu Shinohara, Tsutomu Yoshimura, Kei Sakamoto, Satoshi Kiriki
  • Publication number: 20110105692
    Abstract: A nitrile group-containing highly saturated copolymer rubber having ?,?-ethylenically unsaturated nitrile monomer units (a) and conjugated diene monomer units (b) and having at least part of said conjugated diene monomer units (b) hydrogenated, wherein a content of said ?,?-ethylenically unsaturated nitrile monomer units (a) is 37 to 45 wt %, a total of said ?,?-ethylenically unsaturated nitrile monomer units (a) and said conjugated diene monomer units (b) is 93 wt % or more, an iodine value is 9 or less, and a half value width of a peak of a loss tangent (tan?) in the viscoelastic properties when made into a cross-linked product is 5 to 20° C. in range.
    Type: Application
    Filed: June 26, 2009
    Publication date: May 5, 2011
    Inventors: Tsutomu Yoshimura, Kiyonori Umetsu, Shinya Ikeda
  • Patent number: 7519140
    Abstract: An automatic frequency correction phase-locked loop (PLL) circuit includes an analog control circuit and a digital control circuit. The digital control circuit includes a High-side comparator and a Low-side comparator which receive an analog control voltage, a state monitor circuit, and a counter and decoder circuit. At least one of the High-side comparator and the Low-side comparator includes a threshold switching circuit which selectively provides a first threshold voltage and a second threshold voltage, the first and second threshold voltages having different magnitudes. When the analog control voltage remains stable between the High-side threshold voltage and the Low-side threshold voltage and the threshold switching circuit is providing the first threshold voltage, the state monitor circuit switches the threshold switching circuit from the first threshold voltage to the second threshold voltage, thereby expanding the interval between the High-side threshold voltage and the Low-side threshold voltage.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: April 14, 2009
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Tsutomu Yoshimura
  • Patent number: 7295072
    Abstract: An amplifier circuit includes a first differential amplifier circuit, a second differential amplifier circuit which amplifies an output signal from the first differential amplifier circuit, and an active feedback circuit which performs waveform shaping on the output signal from the first differential amplifier circuit by feeding back an output signal from the second differential amplifier circuit. The active feedback circuit includes first and second transistors having collectors or drains respectively connected to respective output nodes of the first differential amplifier circuit, bases or gates respectively connected to two output nodes of the second differential amplifier circuit, and emitters or sources connected in common, and a first current source which has a first end connected to the emitters or sources of the first and second transistors, and a second end connected to a low-voltage power supply, and producing a current that can be externally adjusted.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: November 13, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Jun Takaso, Tsutomu Yoshimura, Norio Higashisaka
  • Patent number: 7250808
    Abstract: A differential charge pump circuit has two current paths and generates a differential current in accordance with currents inputted to the two current paths. The two current paths have a pair of current sources respectively and form a differential pair. The differential charge pump circuit has controlling means for detecting an output potential difference between the two current paths and controlling current values of the current sources in accordance with the output potential difference.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: July 31, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Tsutomu Yoshimura
  • Publication number: 20060055457
    Abstract: An amplifier circuit includes a first differential amplifier circuit, a second differential amplifier circuit which amplifies an output signal from the first differential amplifier circuit, and an active feedback circuit which performs waveform shaping on the output signal from the first differential amplifier circuit by feeding back an output signal from the second differential amplifier circuit. The active feedback circuit includes first and second transistors having collectors or drains respectively connected to respective output nodes of the first differential amplifier circuit, bases or gates respectively connected to two output nodes of the second differential amplifier circuit, and emitters or sources connected in common, and a first current source which has a first end connected to the emitters or sources of the first and second transistors, and a second end connected to a low-voltage power supply, and producing a current that can be externally adjusted.
    Type: Application
    Filed: August 5, 2005
    Publication date: March 16, 2006
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Jun Takaso, Tsutomu Yoshimura, Norio Higashisaka
  • Patent number: 6987825
    Abstract: The present digital synchronous circuit includes a clock generating circuit for outputting a plurality of clock signals CLK1 to CLKn, a plurality of first latch circuits, each for receiving an input data signal DIN at a data input terminal and for receiving a corresponding clock signal at a clock input terminal, a plurality of second latch circuits, each for latching, in response to the receipt of a control signal LC, an output signal from a corresponding first latch circuit, and a control circuit for receiving input data signal DIN to generate control signal LC. Control circuit outputs control signal LC after a delay of a prescribed period of time after the change in input data signal DIN. As a result, the adverse influence of the meta-stable state that occurs when sampling an asynchronous input data signal DIN is avoided, while at the same time, the chip size and power consumption are limited.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: January 17, 2006
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tsutomu Yoshimura, Harufusa Kondoh
  • Publication number: 20050226357
    Abstract: An automatic frequency correction phase-locked loop (PLL) circuit includes an analog control circuit and a digital control circuit. The digital control circuit includes a High-side comparator and a Low-side comparator which receive an analog control voltage, a state monitor circuit, and a counter and decoder circuit. At least one of the High-side comparator and the Low-side comparator includes a threshold switching circuit which selectively gives a first threshold and a second threshold having different. When the analog control voltage remains between the High-side threshold and the Low-side threshold in a state in which the threshold switching circuit gives the first threshold, the threshold switching circuit switches the first threshold to the second threshold and expands the interval between the High-side threshold and the Low-side threshold.
    Type: Application
    Filed: March 24, 2005
    Publication date: October 13, 2005
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Tsutomu Yoshimura
  • Publication number: 20050162213
    Abstract: A differential charge pump circuit has two current paths and generates a differential current in accordance with currents inputted to the two current paths. The two current paths have a pair of current sources respectively and form a differential pair. The differential charge pump circuit has controlling means for detecting an output potential difference between the two current paths and controlling current values of the current sources in accordance with the output potential difference.
    Type: Application
    Filed: August 12, 2004
    Publication date: July 28, 2005
    Inventor: Tsutomu Yoshimura
  • Publication number: 20050070667
    Abstract: This invention provides a rubber vulcanizate of a nitrile group-containing copolymer rubber, exhibiting enhanced ozone resistance. The rubber vulcanizate is made by heat-treating a polymer composition comprising 40-90 wt. % of a nitrile group-containing copolymer rubber (1), and 60-10 wt. % of particles having an average particle diameter of not larger than 10 ?m comprised of an acrylic resin (2) comprising methyl acrylate or methacrylate units as the main structural units and containing not larger than 0.01 eq. wt., per 100 g of acrylic resin (2), of a crosslink-forming functional group, at a temperature in the range of (T+20)° C. to (T+90)° C. wherein T is a temperature which is selected from glass transition temperature of acrylic resin (2) and melting temperature of acrylic resin (2), and is higher than the other of the two temperatures, to thereby prepare a rubber composition; incorporating a vulcanizer in the rubber composition; and vulcanizing the thus-obtained vulcanizable rubber composition.
    Type: Application
    Filed: November 27, 2002
    Publication date: March 31, 2005
    Inventors: Takashi Toya, Shinji Komiyama, Tsutomu Yoshimura
  • Patent number: 6873209
    Abstract: An input buffer circuit without a drop of a capability of a circuit and a limitation of a connection type with a circuit of a former stage is obtained. The output signal (OUTB) is inputted to a first low pass filter circuit, and the first low pass filter circuit integrates the output signal (OUTB). A result of the integration is stored as a voltage value (V2a) in the capacitor (4s). In the same manner, an output signal (OUT) is inputted to a second low pass filter circuit, and the second low pass filter circuit integrates the output signal (OUT). A result of the integration is stored as a voltage value (V2b) in a capacitor (4t). A differential amplifier circuit (5) generates appropriate voltages (V3a and V3b) according to a design specification of the transistors (1x and 1y) by amplifying the voltage values (V2a and V2b) and outputs them. The voltages (V3a and V3b) are impressed on respective back gates of the transistors (1x and 1y), respectively.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: March 29, 2005
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kengo Takata, Tsutomu Yoshimura, Harufusa Kondo, Hironobu Ito
  • Publication number: 20040227572
    Abstract: An input buffer circuit without a drop of a capability of a circuit and a limitation of a connection type with a circuit of a former stage is obtained. The output signal (OUTB) is inputted to a first low pass filter circuit, and the first low pass filter circuit integrates the output signal (OUTB). A result of the integration is stored as a voltage value (V2a) in the capacitor (4s). In the same manner, an output signal (OUT) is inputted to a second low pass filter circuit, and the second low pass filter circuit integrates the output signal (OUT). A result of the integration is stored as a voltage value (V2b) in a capacitor (4t). A differential amplifier circuit (5) generates appropriate voltages (V3a and V3b) according to a design specification of the transistors (1x and 1y) by amplifying the voltage values (V2a and V2b) and outputs them. The voltages (V3a and V3b) are impressed on respective back gates of the transistors (1x and 1y), respectively.
    Type: Application
    Filed: September 26, 2003
    Publication date: November 18, 2004
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Kengo Takata, Tsutomu Yoshimura, Harufusa Kondo, Hironobu Ito