Patents by Inventor Eri OTAKA

Eri OTAKA 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).

  • Silicate-coated MFI-type zeolite, method of producing the same, and method of producing p-xylene using the same
    Patent number: 9687827
    Abstract: A silicate-coated MFI-type zeolite is obtained by coating an MFI-type zeolite with a silicate, and a peak area ratio b/a of a peak b at 2?=8.4 to 9.7° to a peak a at 2?=7.0 to 8.4° in an X-ray diffraction spectrum is 1 or more, and a pKa value measured by a Hammett indicator is +3.3 or more.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: June 27, 2017
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Eri Otaka, Yasuhiro Araki
  • SILICATE-COATED MFI-TYPE ZEOLITE, METHOD OF PRODUCING THE SAME, AND METHOD OF PRODUCING P-XYLENE USING THE SAME
    Publication number: 20150328626
    Abstract: A silicate-coated MFI-type zeolite is obtained by coating an MFI-type zeolite with a silicate, and a peak area ratio b/a of a peak b at 2?=8.4 to 9.7° to a peak a at 2?=7.0 to 8.4° in an X-ray diffraction spectrum is 1 or more, and a pKa value measured by a Hammett indicator is +3.3 or more.
    Type: Application
    Filed: March 29, 2013
    Publication date: November 19, 2015
    Inventors: Eri OTAKA, Yasuhiro ARAKI