Patents by Inventor Josef Szejtli

Josef Szejtli 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).

  • Highly soluble multicomponent inclusion complexes containing a base type drug, an acid and a cyclodextrin
    Patent number: 5855916
    Abstract: A multicomponent inclusion complex of a basic drug, an acid and a cyclodextrin has enhanced water-solubility.
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: January 5, 1999
    Assignee: Chiesi Farmaceutici S.p.A.
    Inventors: Paolo Chiesi, Paolo Ventura, Massimo Pasini, Josef Szejtli, Maria Vikmon, Enrico Redenti
  • High solubility multicomponent inclusion complexes consisting of an acidic drug, a cyclodextrin and a base
    Patent number: 5773029
    Abstract: Multicomponent inclusion complexes characterized by the presence of an acidic drug, a base and a cyclodextrin are disclosed. Said complexes have a specific solubility in water.
    Type: Grant
    Filed: October 22, 1996
    Date of Patent: June 30, 1998
    Assignee: Chiesi Farmaceutici S.p.A.
    Inventors: Paolo Chiesi, Paolo Ventura, Maurizio Del Canale, Maurizio Redenti, Daniela Acerbi, Massimo Pasini, Josef Szejtli, Maria Vikmon, Eva Fenyvesi
  • Inclusion complex of 7-isopropoxy-isoflavon formed with cyclodextrin, the preparation thereof and pharmaceutical compositions containing these compounds as active ingredients
    Patent number: 5043326
    Abstract: The invention relates to the inclusion complexes of 7-isopropoxy-isoflavon formed with cyclodextrin or cyclodextrin derivatives as well as to the pharmaceutical compositions containing these inclusion complexes as active ingredient. The invention further relates to the preparation of the new inclusion complexes.The new inclusion complex according to the invention shows higher dissolution and resorption properties as compared to the active ingredient administered per se.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: August 27, 1991
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara R.T.
    Inventors: Agnes Stadler nee Szoke, Josef Szejtli, Viktor Weiszfeiler, Zoltan Vargay, Katalin Kaloy, Vera Gergely, Tamas Szuts
  • Inclusion complex of cyclodextrin and indomethacin and a process for the preparation thereof, method of use and pharmaceutical composition
    Patent number: 4228160
    Abstract: The invention relates to an inclusion complex of 1-(p-chloro-benzoyl)-5-methoxy-2-methyl-indol-3-yl-acetic acid (indomethacin) and cyclodextrin of a molar ratio of about 2:1. The inclusion complex can be prepared by reacting about 2 moles of alpha or beta cyclodextrin with about 1 mole of 1-(p-chloro-benzoyl)-5-methoxy-2-methyl-indol-3-yl-acetic acid under heating in the presence of an organic solvent which dissolves indomethacin and does not form a stable complex with cyclodextrin. The new complex is at least as active antiinflammatory agent as indomethacin and at the same time shows substantially less ulcerative side-effect.
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: October 14, 1980
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
    Inventors: Josef Szejtli, Lajos Szente, Agoston David, Sandor Virag, Gyula Sebestyen, Attila Mandi