Patents by Inventor Kazuo Saito, deceased

Kazuo Saito, deceased 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).

  • Antibiotic SF-1623 substance and the production thereof
    Patent number: 4076588
    Abstract: A new antibiotic designated as SF-1623 substance exhibiting a useful antibacterial activity against gram-negative bacteria is now produced by cultivating a new strain ATCC 21999 of the known species Streptomyces chartreusis. The SF-1623 substance in the form of its an alkali metal salt may be recovered from the culture when the cultivation is effected under aerobic conditions in the presence of an alkali metal thiosulfate.
    Type: Grant
    Filed: July 8, 1976
    Date of Patent: February 28, 1978
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Shigeharu Inouye, Takashi Shomura, Michio Kojima, Yasuaki Ogawa, Hiroshi Watanabe, Yasumitsu Kondo, Kazuo Saito, deceased, Yujiro Yamada, Taro Niida
  • Antibiotic SF-1623 substance
    Patent number: 4010155
    Abstract: A new antibiotic designated as SF-1623 substance exhibiting a useful antibacterial activity against gram-negative bacteria is now produced by cultivating a new strain ATCC 21999 of the known species Streptomyces chartreusis. The SF-1623 substance in the form of its an alkali metal salt may be recovered from the culture when the cultivation is effected under aerobic conditions in the presence of an alkali metal thiosulfate.
    Type: Grant
    Filed: November 25, 1974
    Date of Patent: March 1, 1977
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Shigeharu Inouye, Takashi Shomura, Michio Kojima, Yasuaki Ogawa, Hiroshi Watanabe, Yasumitsu Kondo, Kazuo Saito, deceased, Yujiro Yamada, Taro Niida
  • Process for the production of cephamycin type antibiotic substances
    Patent number: 3975235
    Abstract: Novel 7-(5-amino-5-carboxyvaleramido)-7-methoxy-3-hydroxymethyl-3-cephem-4-carbo xylic acid derivatives. Such derivatives are prepared by subjecting cephamycin type compounds to the action of esterase enzyme of mold fungi.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: August 17, 1976
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Tomizo Niwa, Hitoshi Goi, Takashi Shomura, Yasuaki Ogawa, Shigeharu Inouye, Kazuo Saito, deceased, Taro Niida