Patents by Inventor Tsumoru Fukumoto

Tsumoru Fukumoto 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).

  • Process for manufacturing tylosin derivatives
    Patent number: 4201843
    Abstract: New tylosin derivatives having at least one acyl group at the 3- and 4"-positions of tylosin, and the acid addition salts thereof, which inhibit the growth of various microorganisms including drug-resistant bacterial isolants and which produce high blood levels through oral administration are produced by a biochemical reaction using the microorganisms of the genus Streptomyces which are selected for their newly-found ability to acylate at least one of the 3- and 4"-positions of macrolide antibiotics; they are recovered from the reacted mixture by conventional methods for recovering macrolide antibiotics.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: May 6, 1980
    Assignee: Sanraku Ocean Co., Ltd.
    Inventors: Rokuro Okamoto, Tsumoru Fukumoto, Akira Takamatsu, Tomio Takeuchi
  • Tylosin derivatives and their manufacturing process
    Patent number: 4092473
    Abstract: New tylosin derivatives having at least one acyl group at the 3- and 4"-positions of tylosin, and the acid addition salts thereof, which inhibit the growth of various microorganisms including drug-resistant bacterial isolants and which produce high blood levels through oral administration are produced by a biochemical reaction using the microorganisms of the genus Streptomyces which are selected for their newly-found ability to acylate at least one of the 3- and 4"-positions of macrolide antibiotics; they are recovered from the reacted mixture by conventional methods for recovering macrolide antibiotics.
    Type: Grant
    Filed: July 23, 1976
    Date of Patent: May 30, 1978
    Assignee: Sanraku Ocean Co., Ltd.
    Inventors: Rokuro Okamoto, Tsumoru Fukumoto, Akira Takamatsu, Tomio Takeuchi