Patents by Inventor Yuji Harada

Yuji Harada 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: 20210231076
    Abstract: A control apparatus for a compression-ignition type engine is applied to an engine capable of carrying out partial compression ignition combustion. When the partial compression ignition combustion is carried out, an ignition control section of the control apparatus causes an ignition plug to carry out: main ignition in which a spark is generated to initiate the SI combustion; and preceding ignition in which the spark is generated at an earlier time point than the main ignition. An injection control section causes the ignition plug to inject fuel in an intake stroke. The ignition control section sets energy of the preceding ignition to be lower than energy of the main ignition and causes the ignition plug to carry out the preceding ignition after the fuel injection in the intake stroke or an early period or a middle period of a compression stroke.
    Type: Application
    Filed: April 19, 2019
    Publication date: July 29, 2021
    Inventors: Kota MATSUMOTO, Tomonori URUSHIHARA, Keiji MARUYAMA, Masanari SUEOKA, Ryohei ONO, Yuji HARADA, Toru MIYAMOTO, Atsushi INOUE, Tatsuhiro TOKUNAGA, Takuya OHURA, Yusuke KAWAI, Tomohiro NISHIDA, Keita ARAI, Yodai YAMAGUCHI
  • Publication number: 20210222643
    Abstract: An engine system includes an engine, a main combustion chamber formed by a cylinder head and a piston, an auxiliary chamber formed with a communicating hole communicating with the main combustion chamber, an injector configured to inject fuel into the main combustion chamber, an ignition plug provided to the auxiliary chamber and configured to ignite a mixture gas inside the auxiliary chamber, an accelerator opening sensor, and a control device. The control device controls the injector so that an air-fuel ratio of the mixture gas inside the auxiliary chamber becomes a first air-fuel ratio when an engine load range is a first range, and the air-fuel ratio of the mixture gas inside the auxiliary chamber becomes a second air-fuel ratio leaner than the first air-fuel ratio when the engine load range is a second range where the engine load is higher than in the first range.
    Type: Application
    Filed: December 22, 2020
    Publication date: July 22, 2021
    Inventors: Kazuhiro Nagatsu, Hirotaka Suzuki, Yuji Harada, Hiroyuki Yamashita, Ryohei Ono, Kenji Uchida
  • Publication number: 20210222642
    Abstract: An engine control apparatus includes an ignition control section and an injection control section. When the partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of a expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. The energy of the preceding ignition is set to be higher when fuel concentration specified by a fuel concentration specification section is low than when the fuel concentration is high.
    Type: Application
    Filed: April 23, 2019
    Publication date: July 22, 2021
    Inventors: Kota MATSUMOTO, Tomonori URUSHIHARA, Keiji MARUYAMA, Masanari SUEOKA, Ryohei ONO, Yuji HARADA, Toru MIYAMOTO, Atsushi INOUE, Tatsuhiro TOKUNAGA, Takuya OHURA, Yusuke KAWAI, Tomohiro NISHIDA, Keita ARAI, Yodai YAMAGUCHI
  • Publication number: 20210222610
    Abstract: The invention is provided with an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Timing of the preceding ignition is set to be more retarded when an engine speed is high than when the engine speed is low.
    Type: Application
    Filed: April 17, 2019
    Publication date: July 22, 2021
    Inventors: Kota MATSUMOTO, Tomonori URUSHIHARA, Keiji MARUYAMA, Masanari SUEOKA, Ryohei ONO, Yuji HARADA, Toru MIYAMOTO, Atsushi INOUE, Tatsuhiro TOKUNAGA, Takuya OHURA, Yusuke KAWAI, Tomohiro NISHIDA, Keita ARAI, Yodai YAMAGUCHI
  • Patent number: 11066430
    Abstract: A method simply produces a narrowly distributed and high-purity polyalkylene glycol derivative having an amino group at an end without using a heavy metal catalyst.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: July 20, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yuki Suka, Yuji Harada, Takeru Watanabe, Shiori Nonaka
  • Publication number: 20210189945
    Abstract: The invention is provided with an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Ignition timing of the preceding ignition is set to be more retarded when fuel concentration specified by a fuel concentration specification section is low than when the fuel concentration is high.
    Type: Application
    Filed: April 17, 2019
    Publication date: June 24, 2021
    Inventors: Kota MATSUMOTO, Tomonori URUSHIHARA, Keiji MARUYAMA, Masanari SUEOKA, Ryohei ONO, Yuji HARADA, Toru MIYAMOTO, Atsushi INOUE, Tatsuhiro TOKUNAGA, Takuya OHURA, Yusuke KAWAI, Tomohiro NISHIDA, Keita ARAI, Yodai YAMAGUCHI
  • Publication number: 20210115839
    Abstract: An engine control apparatus includes an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate the SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes the injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Energy of the preceding ignition is set to be higher when an engine speed is high than when the engine speed is low.
    Type: Application
    Filed: April 23, 2019
    Publication date: April 22, 2021
    Inventors: Kota MATSUMOTO, Tomonori URUSHIHARA, Keiji MARUYAMA, Masanari SUEOKA, Ryohei ONO, Yuji HARADA, Toru MIYAMOTO, Atsushi INOUE, Tatsuhiro TOKUNAGA, Takuya OHURA, Yusuke KAWAI, Tomohiro NISHIDA, Keita ARAI, Yodai YAMAGUCHI
  • Publication number: 20210112482
    Abstract: A car-loaded communication apparatus comprises: an acquisition part; and a selection part. The acquisition part acquires car information related to a state of a car in which a communication network is constructed inside, or an environment in which the car is placed. The selection part selects a communication route of a flow accommodating a transmission packet(s) from a plurality of communication routes included in the communication network, based on: the car information; and communication route information related to a communication route(s) included in the communication network.
    Type: Application
    Filed: April 24, 2019
    Publication date: April 15, 2021
    Applicant: NEC COMMUNICATION SYSTEMS, LTD.
    Inventors: Takumi NOMURA, Tetsuji KAWATSU, Katsuyuki AKIZUKI, Yuji HARADA, Akira MATSUMOTO, Yuki BABA
  • Patent number: 10975042
    Abstract: The present invention is a method for purifying an NCA, including the steps of: a) dissolving an NCA contaminated with impurities into a solvent which is a good solvent and is not a chlorinated solvent followed by stirring to precipitate an undissolved impurity to afford a suspension, b) adding an acidic filter aid having ability to trap a basic impurity to the obtained suspension followed by filtration and/or forming a fixed bed of the acidic filter aid having ability to trap a basic impurity followed by filtering the suspension to bring the suspension to be in contact with the acidic filter aid having ability to trap a basic impurity, and c) adding the obtained filtrate dropwise to a poor solvent for NCA to crystallize out the NCA in which the impurities are removed. This makes it possible to purify a low-purity NCA conveniently to afford a high-purity NCA.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: April 13, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yuki Suka, Yuji Harada, Shiori Nonaka, Kazuomi Sato, Takeru Watanabe, Takehiko Ishii
  • Patent number: 10836861
    Abstract: A polyalkylene glycol derivative with a minimal impurity content is prepared simply by the steps of reacting a compound having formula (III-I) or (III-II) with an electrophile having formula (IV) in the presence of an optional basic compound, to form a reaction solution containing a compound having formula (V), and passing the reaction solution through a column of cation and anion exchange resins to remove water-soluble impurities, for thereby purifying the desired polyalkylene glycol derivative.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: November 17, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Shiori Nonaka, Yuki Suka, Yuji Harada
  • Patent number: 10717804
    Abstract: The present invention provides a silicon-containing compound shown by the following formula (1): wherein R1, R2, R3, R4, R5, and R6 each independently represent a linear, branched, or cyclic alkyl group having 1 to 6 carbon atoms, a phenyl group, a 3,3,3-trifluoropropyl group, or a group shown by —(OSiR7R8)n—OSiR9R10R11; R7, R8, R9, R10, and R11 have the same meanings as R1 to R6; X represents a linear or branched alkylene group having 3 to 7 carbon atoms optionally having an ether group; and “n” is an integer in the range of 0 to 100. This provides a stretchable film that has excellent stretchability and strength, with the film surface having excellent repellency, and a method for forming the same; as well as a urethane resin used for the stretchable film; and a silicon-containing compound to be a material of the urethane resin.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: July 21, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Jun Hatakeyama, Shiori Nonaka, Yuji Harada, Ryo Mitsui, Osamu Watanabe
  • Patent number: 10696779
    Abstract: The present invention provides a silicon-containing compound shown by the following formula (1): wherein R1, R2, R3, R4, R5, and R6 each independently represent a linear, branched, or cyclic alkyl group having 1 to 6 carbon atoms, a phenyl group, a 3,3,3-trifluoropropyl group, or a group shown by —(OSiR7R8)n—OSiR9R10R11; R7, R8, R9, R10, and R11 have the same meanings as R1 to R6; “n” is an integer in the range of 0 to 100; and “A” represents a linear or branched alkylene group having 1 to 6 carbon atoms. This provides a stretchable film that has excellent stretchability and strength, with the film surface having excellent repellency, and a method for forming the same; as well as a urethane resin used for the stretchable film; and a silicon-containing compound to be a material of the urethane resin.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: June 30, 2020
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Jun Hatakeyama, Yuji Harada, Shiori Nonaka, Ryo Mitsui, Osamu Watanabe
  • Publication number: 20200176645
    Abstract: A method for manufacturing a wavelength conversion member includes: irradiating plasma on surfaces of phosphor particles; mixing the phosphor particles irradiated by plasma and a liquid form resin member to form a slurry; and curing the slurry.
    Type: Application
    Filed: November 28, 2019
    Publication date: June 4, 2020
    Inventors: Yuji HARADA, Takanori AKAISHI
  • Patent number: 10550136
    Abstract: A method simply produces a narrowly distributed and high-purity polyalkylene glycol derivative having an amino group at an end without using a heavy metal catalyst.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: February 4, 2020
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yuki Suka, Yuji Harada, Takeru Watanabe, Shiori Nonaka
  • Publication number: 20190359579
    Abstract: The present invention is a method for purifying an NCA, including the steps of: a) dissolving an NCA contaminated with impurities into a solvent which is a good solvent and is not a chlorinated solvent followed by stirring to precipitate an undissolved impurity to afford a suspension, b) adding an acidic filter aid having ability to trap a basic impurity to the obtained suspension followed by filtration and/or forming a fixed bed of the acidic filter aid having ability to trap a basic impurity followed by filtering the suspension to bring the suspension to be in contact with the acidic filter aid having ability to trap a basic impurity, and c) adding the obtained filtrate dropwise to a poor solvent for NCA to crystallize out the NCA in which the impurities are removed. This makes it possible to purify a low-purity NCA conveniently to afford a high-purity NCA.
    Type: Application
    Filed: May 21, 2019
    Publication date: November 28, 2019
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yuki SUKA, Yuji HARADA, Shiori NONAKA, Kazuomi SATO, Takeru WATANABE, Takehiko ISHII
  • Patent number: 10472377
    Abstract: A method for producing a narrowly distributed and high-purity polyalkylene glycol derivative having an amino group at an end, a polymerization initiator for use in the method, and a precursor of the polymerization initiator are provided.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: November 12, 2019
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yuki Suka, Yuji Harada, Takeru Watanabe, Shiori Nonaka
  • Publication number: 20190322688
    Abstract: A method simply produces a narrowly distributed and high-purity polyalkylene glycol derivative having an amino group at an end without using a heavy metal catalyst.
    Type: Application
    Filed: June 27, 2019
    Publication date: October 24, 2019
    Inventors: Yuki Suka, Yuji Harada, Takeru Watanabe, Shiori Nonaka
  • Publication number: 20190315777
    Abstract: A method simply produces a narrowly distributed and high-purity polyalkylene glycol derivative having an amino group at an end without using a heavy metal catalyst.
    Type: Application
    Filed: June 27, 2019
    Publication date: October 17, 2019
    Inventors: Yuki Suka, Yuji Harada, Takeru Watanabe, Shiori Nonaka
  • Publication number: 20190264028
    Abstract: This is to provide a stretchable film having excellent stretchability and strength and excellent water repellency on the surface of the film, a method for forming the same, a urethane resin used for the stretchable film and a silicon-containing compound as a material of the urethane resin. A silicon-containing compound represented by the following general formula (1), wherein, R1, R2, R3, R4, R5, and R6 each represents a linear, branched or cyclic alkyl group having 1 to 6 carbon atoms, a phenyl group, a 3,3,3-trifluoropropyl group or a group represented by —(OSiR7R8)n—OSiR9R10R11; R7, R8, R9, R10 and R11 are the same as those of R1 to R6; “n” is an integer in the range of 0 to 100; A represents a linear or branched alkylene group having 3 to 6 carbon atoms; and “m” is an integer in the range of 1 to 3.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 29, 2019
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Jun HATAKEYAMA, Motoaki IWABUCHI, Yuji HARADA, Shiori NONAKA, Koji HASEGAWA
  • Patent number: 10377775
    Abstract: A method simply produces a narrowly distributed and high-purity polyalkylene glycol derivative having an amino group at an end without using a heavy metal catalyst.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: August 13, 2019
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yuki Suka, Yuji Harada, Takeru Watanabe, Shiori Nonaka