Patents by Inventor Yukihiro Yoshiwara

Yukihiro Yoshiwara 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: 20240051899
    Abstract: Provided is a production method for indan and hydrindane, including a reaction step of introducing a raw material composition including tetrahydroindene into a continuous reactor including a solid catalyst containing platinum, and bringing the raw material composition into contact with the solid catalyst under the conditions of 150° C. to 350° C. to obtain a reaction product including indan and hydrindane, in which the amount (mol/min) of hydrogen molecules is 5 times or less the amount (mol/min) of tetrahydroindene, and the amount (mol/min) of oxygen molecules is 0.1 times or less the amount (mol/min) of tetrahydroindene.
    Type: Application
    Filed: January 13, 2022
    Publication date: February 15, 2024
    Applicant: ENEOS CORPORATION
    Inventors: Yasuhiro ARAKI, Atsushi SEGAWA, Yasuyuki IWASA, Tai OHUCHI, Kazuya MAYUMI, Yukihiro YOSHIWARA
  • Publication number: 20220064085
    Abstract: A method for producing linear monoolefins comprises a step of contacting a raw material composition containing a first linear monoolefin having 4 to 8 carbon atoms with an isomerization catalyst at 250 to 390° C. in the presence of 20 ppm by volume or more of molecular oxygen and/or 20 ppm by volume or more of water to perform an isomerization reaction for isomerizing at least a part of the first linear monoolefin to a second linear monoolefin having a different double bond position, wherein the catalyst contains zeolite.
    Type: Application
    Filed: December 18, 2019
    Publication date: March 3, 2022
    Applicants: ENEOS Corporation, JSR CORPORATION
    Inventors: Sosuke HIGUCHI, Yukihiro YOSHIWARA, Nobuhiro KIMURA, Mayu SUGIMOTO, Junjie WANG
  • Patent number: 10851313
    Abstract: A method of producing a lower olefin and BTX from stock oils selected from at least two kinds of oils is provided. The method includes a first catalytic cracking step of bringing one stock oil A into contact with a catalytic cracking catalyst; a second catalytic cracking step of bringing one stock oil B, having an aromatic component content smaller than that of the stock oil A, into contact with the catalytic cracking catalyst; and a separation and collection step of collecting the lower olefins and BTX from a product generated in the first and second catalytic cracking steps. A contact time A during which the stock oil A is in contact with the catalytic cracking catalyst in the first catalytic cracking step is longer than a contact time B during which the stock oil B is in contact with the catalytic cracking catalyst in the second catalytic cracking step.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: December 1, 2020
    Assignees: ENEOS CORPORATION, CHIYODA CORPORATION
    Inventors: Ryoji Ida, Yasuyuki Iwasa, Masahide Kobayashi, Yukihiro Yoshiwara, Shinichiro Yanagawa, Yasuhiro Watanabe, Takashi Aozasa, Shinji Hyodo
  • Publication number: 20190316048
    Abstract: A method of producing a lower olefin and BTX from stock oils selected from at least two kinds of oils is provided. The method includes a first catalytic cracking step of bringing one stock oil A into contact with a catalytic cracking catalyst; a second catalytic cracking step of bringing one stock oil B, having an aromatic component content smaller than that of the stock oil A, into contact with the catalytic cracking catalyst; and a separation and collection step of collecting the lower olefins and BTX from a product generated in the first and second catalytic cracking steps. A contact time A during which the stock oil A is in contact with the catalytic cracking catalyst in the first catalytic cracking step is longer than a contact time B during which the stock oil B is in contact with the catalytic cracking catalyst in the second catalytic cracking step.
    Type: Application
    Filed: July 12, 2017
    Publication date: October 17, 2019
    Inventors: Ryoji IDA, Yasuyuki IWASA, Masahide KOBAYASHI, Yukihiro YOSHIWARA, Shinichiro YANAGAWA, Yasuhiro WATANABE, Takashi AOZASA, Shinji HYODO
  • Patent number: 9845433
    Abstract: A method for producing an olefin and a monocyclic aromatic hydrocarbon of the present invention includes a dicyclopentadiene removal treatment step of removing dicyclopentadienes having a dicyclopentadiene skeleton from a feedstock oil which is a thermally-cracked heavy oil obtained from an apparatus for producing ethylene and which has a 90 volume % distillate temperature, as a distillation characteristic, of 390° C. or lower; and a cracking and reforming reaction step of obtaining a product containing an olefin and a monocyclic aromatic hydrocarbon by bringing the feedstock oil having a content of dicyclopentadienes adjusted to 10% by weight or less by treating a part or all of the feedstock oil through the dicyclopentadiene removal step into contact with a catalyst and reacting the feedstock oil.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: December 19, 2017
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Shinichiro Yanagawa, Masahide Kobayashi, Yukihiro Yoshiwara, Ryoji Ida
  • Patent number: 9670420
    Abstract: A method for producing a monocyclic aromatic hydrocarbon of the present invention includes a cracking and reforming reaction step of obtaining a product containing a monocyclic aromatic hydrocarbon having 6 to 8 carbon atoms by bringing a feedstock oil having a 10 volume % distillate temperature of 140° C. or higher and a 90 volume % distillate temperature of 390° C. or lower and a saturated hydrocarbon having 1 to 3 carbon atoms into contact with a catalyst for producing a monocyclic aromatic hydrocarbon containing crystalline aluminosilicate, which is loaded into a fixed-bed reactor, and reacting the feedstock oil and the saturated hydrocarbon.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: June 6, 2017
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Shinichiro Yanagawa, Masahide Kobayashi, Yukihiro Yoshiwara
  • Publication number: 20150275102
    Abstract: A method for producing an olefin and a monocyclic aromatic hydrocarbon of the present invention includes a cracking and reforming reaction step of obtaining a product containing an olefin and a monocyclic aromatic hydrocarbon by bringing a feedstock oil which is a thermally-cracked heavy oil obtained from an apparatus for producing ethylene which includes a cracking furnace and a product collection device that separates and collects an olefin and an aromatic hydrocarbon from a cracked product produced in the cracking furnace and which has a 90 volume % distillate temperature, as a distillation characteristic, of 390° C. or lower into contact with a catalyst and reacting the feedstock oil; and a product collection step of collecting the olefin and the monocyclic aromatic hydrocarbon respectively by treating the product obtained in the cracking and reforming reaction step using the product collection device in the apparatus for producing ethylene.
    Type: Application
    Filed: October 25, 2013
    Publication date: October 1, 2015
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Shinichiro Yanagawa, Masahide Kobayashi, Yukihiro Yoshiwara
  • Publication number: 20150275103
    Abstract: A method for producing an olefin and a monocyclic aromatic hydrocarbon of the present invention includes a dicyclopentadiene removal treatment step of removing dicyclopentadienes having a dicyclopentadiene skeleton from a feedstock oil which is a thermally-cracked heavy oil obtained from an apparatus for producing ethylene and which has a 90 volume % distillate temperature, as a distillation characteristic, of 390° C. or lower; and a cracking and reforming reaction step of obtaining a product containing an olefin and a monocyclic aromatic hydrocarbon by bringing the feedstock oil having a content of dicyclopentadienes adjusted to 10% by weight or less by treating a part or all of the feedstock oil through the dicyclopentadiene removal step into contact with a catalyst and reacting the feedstock oil.
    Type: Application
    Filed: October 25, 2013
    Publication date: October 1, 2015
    Inventors: Shinichiro Yanagawa, Masahide Kobayashi, Yukihiro Yoshiwara, Ryoji Ida
  • Publication number: 20150259610
    Abstract: A method for producing a monocyclic aromatic hydrocarbon of the present invention includes a cracking and reforming reaction step of obtaining a product containing a monocyclic aromatic hydrocarbon having 6 to 8 carbon atoms by bringing a feedstock oil having a 10 volume % distillate temperature of 140° C. or higher and a 90 volume % distillate temperature of 390° C. or lower and a saturated hydrocarbon having 1 to 3 carbon atoms into contact with a catalyst for producing a monocyclic aromatic hydrocarbon containing crystalline aluminosilicate, which is loaded into a fixed-bed reactor, and reacting the feedstock oil and the saturated hydrocarbon.
    Type: Application
    Filed: October 25, 2013
    Publication date: September 17, 2015
    Inventors: Shinichiro Yanagawa, Masahide Kobayashi, Yukihiro Yoshiwara