Patents by Inventor Tsutomo Okamoto

Tsutomo Okamoto 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: 8329973
    Abstract: The multiple zeolite catalyst is a catalytic composition used to convert C9+ alkylaromatic hydrocarbons to BTX, particularly commercially valuable xylenes. The catalyst is formed by mixing at least two zeolites selected from mordenite, beta zeolite, ZSM-5, ZSM-11, ZSM-12, ZSM-22, ZSM-23, MFI topology zeolite, NES topology zeolite, EU-1, MAPO-36, SAPO-5, SAPO-11, SAPO-34, and SAPO-41, and adding at least one metal component selected from Group VIB and Group VIII of the Periodic Table of the Elements. The two zeolites should have different physical and chemical characteristics, such as pore size and acidity. An exemplary catalyst includes mordenite, ZSM-5, and 3 wt. % molybdenum. The transalkylation reaction may be conducted in one or more reactors with a fixed bed, moving bed, or radial flow reactor at 200-540° C., a pressure of 1.0-5.0 MPa, and liquid hourly space velocity of 1.0-5.0 per hour.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: December 11, 2012
    Assignees: King Fahd University of Petroleum and Minerals, Japan Cooperation Center, Petroleum (JCCP)
    Inventors: Tomoyuki Inui, Masayuki Inui, legal representative, Mohammad A. Ali, Muhammad A. Al-Saleh, Syed A. Ali, Khalid Al-Nawad, Tsutomo Okamoto, Katsuhiko Ishikawa, Minoru Hatayama
  • Publication number: 20120116139
    Abstract: The multiple zeolite catalyst is a catalytic composition used to convert C9+ alkylaromatic hydrocarbons to BTX, particularly commercially valuable xylenes. The catalyst is formed by mixing at least two zeolites selected from mordenite, beta zeolite, ZSM-5, ZSM-11, ZSM-12, ZSM-22, ZSM-23, MFI topology zeolite, NES topology zeolite, EU-1, MAPO-36, SAPO-5, SAPO-11, SAPO-34, and SAPO-41, and adding at least one metal component selected from Group VIB and Group VIII of the Periodic Table of the Elements. The two zeolites should have different physical and chemical characteristics, such as pore size and acidity. An exemplary catalyst includes mordenite, ZSM-5, and 3 wt. % molybdenum. The transalkylation reaction may be conducted in one or more reactors with a fixed bed, moving bed, or radial flow reactor at 200-540° C., a pressure of 1.0-5.0 MPa, and liquid hourly space velocity of 1.0-5.0 per hour.
    Type: Application
    Filed: January 18, 2012
    Publication date: May 10, 2012
    Applicants: JAPAN COOPERATION CENTER, PETROLEUM (JCCP), KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: TOMOYUKI INUI, MASAYUKI INUI, MOHAMMAD A. ALI, MUHAMMAD A. AL-SALEH, SYED A. ALI, KHALID AL-NAWAD, TSUTOMO OKAMOTO, KATSUHIKO ISHIKAWA, MINORU HATAYAMA