Patents by Inventor Yasuhiko Samura

Yasuhiko Samura 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).

  • Oxidation reactor, process for producing (meth)acrylic acids, and method for analyzing easily-polymerizable compounds
    Patent number: 7388108
    Abstract: An oxidation reactor includes a reactor body, a manhole nozzle projecting from the reactor body, and a partition plate separating an inside of the manhole nozzle and an inside of the reactor body from each other. In an oxidation reactor including the reactor body and a nozzle projecting from the reactor body, there is provided a means for feeding an inert gas into the nozzle. In a process for producing (meth)acrylic acids by subjecting propane, propylene or isobutylene to catalytic gas-phase oxidation reaction in an oxidation reactor for producing (meth)acrolein or (meth)acrylic acid, the above oxidation reactor is used as the oxidation reactor. In a method for analyzing an easily-polymerizable compound by introducing a gas containing the easily-polymerizable compound into an analyzing apparatus through a sampling tube, a double tube is used as the sampling tube, and a heating medium is fed into an outer tube of the double tube.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: June 17, 2008
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shuhei Yada, Yasushi Ogawa, Yoshiro Suzuki, Hirochika Hosaka, Yasuhiko Samura
  • Oxidation reactor, process for producing (meth)acrylic acids, and method for analyzing easily-polymerizable compounds
    Patent number: 7384607
    Abstract: An oxidation reactor includes a reactor body, a manhole nozzle projecting from the reactor body, and a partition plate separating an inside of the manhole nozzle and an inside of the reactor body from each other. In an oxidation reactor including the reactor body and a nozzle projecting from the reactor body, there is provided a means for feeding an inert gas into the nozzle. In a process for producing (meth)acrylic acids by subjecting propane, propylene or isobutylene to catalytic gas-phase oxidation reaction in an oxidation reactor for producing (meth)acrolein or (meth)acrylic acid, the above oxidation reactor is used as the oxidation reactor. In a method for analyzing an easily-polymerizable compound by introducing a gas containing the easily-polymerizable compound into an analyzing apparatus through a sampling tube, a double tube is used as the sampling tube, and a heating medium is fed into an outer tube of the double tube.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: June 10, 2008
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shuhei Yada, Yasushi Ogawa, Yoshiro Suzuki, Hirochika Hosaka, Yasuhiko Samura
  • Oxidation reactor, process for producing (meth)acrylic acids, and method for analyzing easily-polymerizable compounds
    Publication number: 20070043239
    Abstract: An oxidation reactor includes a reactor body, a manhole nozzle projecting from the reactor body, and a partition plate separating an inside of the manhole nozzle and an inside of the reactor body from each other. In an oxidation reactor including the reactor body and a nozzle projecting from the reactor body, there is provided a means for feeding an inert gas into the nozzle. In a process for producing (meth)acrylic acids by subjecting propane, propylene or isobutylene to catalytic gas-phase oxidation reaction in an oxidation reactor for producing (meth)acrolein or (meth)acrylic acid, the above oxidation reactor is used as the oxidation reactor. In a method for analyzing an easily-polymerizable compound by introducing a gas containing the easily-polymerizable compound into an analyzing apparatus through a sampling tube, a double tube is used as the sampling tube, and a heating medium is fed into an outer tube of the double tube.
    Type: Application
    Filed: October 26, 2006
    Publication date: February 22, 2007
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Shuhei Yada, Yasushi Ogawa, Yoshiro Suzuki, Hirochika Hosaka, Yasuhiko Samura
  • Oxidation reactor, process for producing (meth) acrylic acids, and method for analyzing easily-polymerizable compounds
    Publication number: 20050143602
    Abstract: An oxidation reactor includes a reactor body, a manhole nozzle projecting from the reactor body, and a partition plate separating an inside of the manhole nozzle and an inside of the reactor body from each other. In an oxidation reactor including the reactor body and a nozzle projecting from the reactor body, there is provided a means for feeding an inert gas into the nozzle. In a process for producing (meth)acrylic acids by subjecting propane, propylene or isobutylene to catalytic gas-phase oxidation reaction in an oxidation reactor for producing (meth)acrolein or (meth)acrylic acid, the above oxidation reactor is used as the oxidation reactor. In a method for analyzing an easily-polymerizable compound by introducing a gas containing the easily-polymerizable compound into an analyzing apparatus through a sampling tube, a double tube is used as the sampling tube, and a heating medium is fed into an outer tube of the double tube.
    Type: Application
    Filed: March 25, 2004
    Publication date: June 30, 2005
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Shuhei Yada, Yasushi Ogawa, Yoshiro Suzuki, Hirochika Hosaka, Yasuhiko Samura