Patents by Inventor Barbara Stefanska

Barbara Stefanska 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).

  • Asymmetrically substituted anthrapyridazone derivatives as cytostatics
    Patent number: 9096536
    Abstract: The invention relates to the new, asymmetrically substituted derivatives of 2,7-dihydro-3H-dibenzo[de,h]cinnoline-3,7-dione and their use as cytostatics exhibiting activity against tumor cells, especially against cells with multidrug resistance (MDR). In particular, the invention concerns derivatives of 2,7-dihydro-3H-dibenzo[de,h]cinnoline-3,7-dione represented by the general formula (I).
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: August 4, 2015
    Assignee: BS-154 S.P. ZO.O.
    Inventors: Edward Borowski, Barbara Stefanska, Maria Dzieduszycka, Marcin Cybulski, Wieslaw Szelejewski, Janusz Obukowicz, Maria Bontemps-Gracz, Malgorzata Wysocka, Jan Mazerski, Pawel Punda, Joanna Wietrzyk
  • ASYMMETRICALLY SUBSTITUTED ANTHRAPYRIDAZONE DERIVATIVES AS CYTOSTATICS
    Publication number: 20140031357
    Abstract: The invention relates to the new, asymmetrically substituted derivatives of 2,7-dihydro-3H-dibenzo[de,h]cinnoline-3,7-dione and their use as cytostatics exhibiting activity against tumor cells, especially against cells with multidrug resistance (MDR). In particular, the invention concerns derivatives of 2,7-dihydro-3H-dibenzo[de,h]cinnoline-3,7-dione represented by the general formula (I).
    Type: Application
    Filed: April 13, 2012
    Publication date: January 30, 2014
    Applicant: BS-154 SP. Z O.O.
    Inventors: Edward Borowski, Barbara Stefanska, Maria Dzieduszycka, Marcin Cybulski, Wieslaw Szelejewski, Janusz Obukowicz, Maria Bontemps-Gracz, Malgorzata Wysocka, Jan Mazerski, Pawel Punda, Joanna Wietrzyk
  • Water-soluble salts of trimethylammonium derivatives of polyene macrolide antibiotics and the preparation thereof
    Patent number: 4294958
    Abstract: Inorganic salts of trimethylammonium derivatives of polyene macrolides, particularly the inorganic salts of methyl esters of these derivatives having the general formula: ##STR1## wherein R is the residue of a polyene macrolide and X is an anion of a salt selected from the group consisting of methylsulphate, sulphate, chloride, phosphate and acetate.The preparation of salts of formula (I) or formula (II) is also disclosed.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: October 13, 1981
    Assignee: Politechnika Gdanska
    Inventors: Leonard Falkowski, Barbara Stefanska, Jan Zielinski, Elzbieta Troka, Jerzy Golik, Pawel Kolodziejczyk, Andrzej Jarzebski, Emilia Cybulska, Edward Borowski