Patents by Inventor Yehuda Levin

Yehuda Levin 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 derivatives of daunomycin
    Patent number: 4256632
    Abstract: The present invention relates to novel derivatives of the anthracycline type anticancer drug daunomycin which are characterized by improved anticancer activity and by reduced toxicity compared with daunomycin itself. The novel compounds are amino acid or peptidyl derivatives of daunomycin. The invention further relates to pharmaceutical compositions containing such derivatives as active ingredients.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: March 17, 1981
    Assignee: Yeda Research and Development Co. Ltd.
    Inventors: Yehuda Levin, Ben-Ami Sela
  • Immobilized enzymes
    Patent number: 4013511
    Abstract: Enzymes are convalently found to anionic or cationic hydrophilic polymeric carriers formed by essentially complete reaction of pendent anhydride groups of ethylene-maleic anhydride copolymer (EMA) with a diamine selected from the group consisting of hydrazine, P, P'-diaminodiphenylmethane and 1,6-diaminohexane to produce resins having pendent amine groups. The EMA-hydrazide and EMA- P,P'-diaminodiphenylmethane resins can be rendered cationic by reaction with N,N-dimethyl-1,3-propanediamine.
    Type: Grant
    Filed: May 10, 1974
    Date of Patent: March 22, 1977
    Assignee: Yeda Research & Development Co. Ltd.
    Inventors: Leon Goldstein, Ephraim Katzir (Katchalski), Yehuda Levin, Shmaryahu Blumberg