Patents by Inventor Shinjiro Sumi

Shinjiro Sumi 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).

  • OPTIMIZED PRODUCTION METHOD FOR PEST CONTROL AGENT
    Publication number: 20190270709
    Abstract: The present invention provides a method for producing a compound represented by the following formula (I) with a compound represented by the following formula (A) as a starting substance via production of an intermediate represented by the following formula (B) by use of a trifluoroacetic acid ester and a metal base.
    Type: Application
    Filed: September 15, 2017
    Publication date: September 5, 2019
    Applicant: MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Shigeki KITSUDA, Nozomu NAKANISHI, Shinjiro SUMI
  • X-ray intercepting metal complexes of chlorin derivatives
    Patent number: 6413495
    Abstract: An X-ray-intercepting gold complex of mono-L-aspartyl (or mono-L-glutamyl) chlorin e6 or a salt thereof is used in the therapy of the tumor, cancer or arteriosclerosis lesions by X-ray irradiation. The complex provides a sharp x-ray image of tumor, solid cancer or lesions of arteriosclerosis. A similar platinum complex may also be utilized.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: July 2, 2002
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Katsuo Aizawa, Shinjiro Sumi, Hirotada Takahashi, Noriaki Aman, Yoshihiko Terayama, Shuichi Gomi
  • Derivatives of cyclodepsipeptide PF 1022
    Patent number: 5747448
    Abstract: Novel PF 1022 derivatives--cyclodepsipeptides represented by the below-described formula (I)--and acid addition salts thereof, which have been synthesized according to the present invention, have anthelmintic activities against various parasitic worms which are parasitic on human bodies, domestic animals and pet animals. They are therefore useful as anthelmintics for the prevention or treatment of parasitic infections. ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, Q, X, Y and Z have been defined herein.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: May 5, 1998
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Makoto Ohyama, Maki Ohishi, Yumiko Okada, Masao Koyama, Shinjiro Sumi, Yasushi Murai, Masayuki Takagi, Tadaaki Okada, Osamu Sakanaka, Toshio Yoneta, Katsuharu Iinuma, Seiji Shibahara
  • Azetidinone derivatives and method for producing azetidinone and cephalosoporin derivatives
    Patent number: 5596096
    Abstract: New compounds are disclosed having the general formulas (1) and (2): ##STR1## Also described is a process for preparing the compounds of formulas (1) and (2). Further described is a process for preparing a cephalosporin derivative having formula (5): ##STR2## by converting the compound of formula (1) to the compound of formula (2) and then converting the compound of formula (2) to the compound of formula (5).
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: January 21, 1997
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Osamu Sakanaka, Shouhei Yasuda, Shinjiro Sumi, Katsufumi Sebata, Katsuharu Iinuma, Ken Nishihata
  • Method for producing azetidinone and cephalosporin derivatives
    Patent number: 5405955
    Abstract: New compounds are disclosed having the general formulas (1) and (2): ##STR1## Also described is a process for preparing the compounds of formulas (1) and (2). Further described is a process for preparing a cephalosporin derivative having formula (5): ##STR2## by converting the compound of formula (1) to the compound of formula (2) and then converting the compound of formula (2) to the compound of formula (5).
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: April 11, 1995
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Osamu Sakanaka, Shouhei Yasuda, Shinjiro Sumi, Katsufumi Sebata, Katsuharu Iinuma, Ken Nishihata