Patents by Inventor Yakir Klausner

Yakir Klausner 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).

  • Derivatives of para-guanidino-L-phenylalanine and methods of preparing them
    Patent number: 4118575
    Abstract: The invention relates to novel derivatives of L-phenylalanine and particularly to tosyl-paraguanidino-L-phenylalanine methyl ester, to ter-butyloxycarbonyl derivative of para-guanidino-L-phenylalanine and to para-guanidino-L-phenylalanine.The tosyl-paraguanidino-L-phenylalanine methyl ester is an efficient trypsine substrate.
    Type: Grant
    Filed: September 5, 1975
    Date of Patent: October 3, 1978
    Assignee: Choay S.A.
    Inventors: Meir Rigbi, Yakir Klausner, Pierre Lefrancier, Edgar Sache