Patents by Inventor Seishi Morita

Seishi Morita 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).

  • Novel process for producing a cephalosporin
    Patent number: 4736026
    Abstract: The invention relates to a process for producing a cephalosporin of the formula ##STR1## by reacting the compound ##STR2## with the compound ##STR3## in the presence of boron trifluoride or a complex thereof.
    Type: Grant
    Filed: June 24, 1986
    Date of Patent: April 5, 1988
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Hiroyuki Imaizumi, Takihiro Inaba, Seishi Morita, Ryuko Takeno, Yoshiharu Murotani, Hirohiko Fukuda, Junichi Yoshida, Kiyoshi Tanaka, Shuntaro Takano, Isamu Saikawa
  • Novel process for producing 2-(2-aminothiazol-4-yl)glyoxylic acid derivative or a salt thereof, and intermediates therefor and process for producing the intermediates
    Patent number: 4667040
    Abstract: This invention relates to a novel process for producing a 2-(2-aminothiazol-4-yl)glyoxylic acid derivative or a salt thereof which are useful in producing a cephalosporin antibiotic, and to intermediates for said derivative and salt and a process for producing the intermediates.
    Type: Grant
    Filed: July 9, 1985
    Date of Patent: May 19, 1987
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Hiroshi Sadaki, Hiroyuki Imaizumi, Kenji Takeda, Takihiro Inaba, Ryuko Takeno, Seishi Morita, Tetsuya Kajita, Isamu Saikawa
  • Aminothiazole intermediate for a cephalosporin
    Patent number: 4656287
    Abstract: This invention relates to a novel aminothiazole intermediate for production of a cephalosporin of antibiotic activity.
    Type: Grant
    Filed: July 11, 1985
    Date of Patent: April 7, 1987
    Assignee: Toyoma Chemical Co., Ltd.
    Inventors: Hiroyuki Imaizumi, Takihiro Inaba, Seishi Morita, Ryuko Takeno, Yoshiharu Murotani, Hirohiko Fukuda, Junichi Yoshida, Kiyoshi Tanaka, Shuntaro Takano, Isamu Saikawa
  • Process for producing 2-(2-aminothiazol-4-yl)glyoxylic acid derivative or a salt thereof, and intermediates therefor and process for producing the intermediates
    Patent number: 4563534
    Abstract: This invention relates to a novel process for producing a 2-(2-aminothiazol-4-yl)glyoxylic acid derivative or a salt thereof which are useful in producing a cephalosporin antibiotic, and to intermediates for said derivative and salt and a process for producing the intermediates.
    Type: Grant
    Filed: June 14, 1983
    Date of Patent: January 7, 1986
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Hiroshi Sadaki, Hiroyuki Imaizumi, Kenji Takeda, Takihiro Inaba, Ryuko Takeno, Seishi Morita, Tetsuya Kajita, Isamu Saikawa