Patents by Inventor Hideo Yoshiwara

Hideo 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).

  • Conversion of 15-beta to 15-alpha 5,6,7-trinor-4,8-inter-m-phenylene PGI2 derivatives
    Patent number: 5420310
    Abstract: The present invention provides a process for preparing 5,6,7-trinor-4,8-inter-m-phenylene PGI.sub.2 derivative using 3a,8b-cis-dihydro-3H-5,7-dibromocyclopenta[b]benzofuran as a starting material, as well as compounds which are intermediates.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: May 30, 1995
    Assignee: Toray Industries, Inc.
    Inventors: Kiyotaka Ohno, Hiroshi Nagase, Yutaka Hosono, Hisanori Wakita, Koji Kawai, Hideo Yoshiwara
  • Process of producing 5,6,7-trinor-4,8-inter-m-phenylene PGI2 derivatives
    Patent number: 5202447
    Abstract: The present invention provides a process for preparing 5,6,7-trinor-4,8-inter-m-phenylene PGI.sub.2 derivative [VII] using 3a,8b-cis-dihydro-3H-5,7-dibromocyclopenta[b]benzofuran (1) as a starting material, as well as compounds of the formulae (8) and (11) which are intermediates for the preparation of the compound of the formula (1).
    Type: Grant
    Filed: January 2, 1991
    Date of Patent: April 13, 1993
    Assignee: Toray Industries, Inc.
    Inventors: Kiyotaka Ohno, Hiroshi Nagase, Yutaka Hosono, Hisanori Wakita, Koji Kawai, Hideo Yoshiwara