Patents by Inventor Ivo Hrsak

Ivo Hrsak 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).

  • Tert-butyloxycarbonyl-L-tyrosyl-peptidoglycan monomer and .sup.125 I-labeled derivative thereof, their preparation and use
    Patent number: 5290576
    Abstract: The present invention relates to the novel tert-butyloxycarbonyl-L-tyrosylpeptidoglycan monomer ##STR1## and to its .sup.125 I-labelled Boc-Tyr-PGM derivative; to the preparation and use thereof as pharmaceuticals of immunostimulating and antitumor activity.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: March 1, 1994
    Assignees: Pliva Farmaceutska, Kemijska Prehrambena
    Inventors: Djurdjica Ljevakovic, Branka Vranesic, Jelka Tomasic, Ivo Hrsak, Branko Ladesic
  • New adamantyl comprising tripeptides, derivatives and hydrochlorides thereof, their preparation and use
    Patent number: 5286715
    Abstract: 2-Adamantyl- and 1-adamantyl-D/L-glycyl-L-alanyl-D-isoglutamine and their derivatives of the formulae ##STR1## wherein R stands for a hydrogen atom or a MurNAc group, and hydrochlorides thereof, a process for the preparation thereof and their use to obtain pharmaceuticals, which are particularly indicated for the treatment of viral diseases and tumors and/or immunomodulations in humans and animals.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: February 15, 1994
    Assignee: Imunoloski Zavod
    Inventors: Branka Vranesic, Jelka Tomasic, Stanislay Smerdel, Darko Kantoci, Gianni Sava, Ivo Hrsak
  • Adamantyl comprising tripeptides, derivatives and hydrochlorides thereof, their preparation and use
    Patent number: 5066642
    Abstract: 2-Adamantyl- and 1-adamantyl-D/L-glycyl-L-alanyl-D-isoglutamine and their derivatives of the formulae ##STR1## wherein R stands for a hydrogen atom or a MurNAc group, and hydrochlorides thereof,a process for the preparation thereof and their use to obtain pharmaceuticals, which are particularly indicated for the treatment of viral diseases and tumors and/or immunomodulations in humans and animals.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: November 19, 1991
    Assignee: Imunoloski Zavod
    Inventors: Branka Vranesic, Jelka Tomasic, Stanislav Smerdel, Darko Kantoci, Gianni Sava, Ivo Hrsak