Patents by Inventor Jozsef Szejtli

Jozsef 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).

  • Publication number: 20120040901
    Abstract: The present invention relates to novel materials, particularly biomaterials, in form of a precipitate, comprising at least an anionic polymeric component which is as such soluble in water and an amphiphilic ammonium-type component, which precipitate is obtainable by a process including the following steps: 1. contacting the anionic polymeric component and an cyclodextrin component in an aqueous medium, and 2. adding to the mixture obtained in step 1 said amphiphilic ammonium-type component, wherein said components are present in amounts effective to form said precipitate, and preferably to corresponding precipitates additionally comprising said cyclodextrin component. Both types of precipitates may optionally comprise one or more further components. The precipitates are particularly useful as controlled-release depot formulations suitable for long-lasting delivery of said further components.
    Type: Application
    Filed: October 25, 2011
    Publication date: February 16, 2012
    Inventors: Lajos Szente, Jozsef Szejtli, György Lajos Kis, Christian Schoch
  • Publication number: 20120004158
    Abstract: Use of a compound of formula (I): wherein the symbol cyclodextrin? ]n represents a n-valent residue derived from a cyclodextrin compound by removing n of its hydroxyl groups; n is a number greater than 0 and represents the average number of substituents of formula per molecule of said compound; h is 0 or 1; R1 is a di-valent group selected from alkylene, hydroxy alkylene, halogeno alkylene, monocyclic aralkylene, cycloalkylene and phenylene; R2, R3 and R4 are each independently of one another a group selected from alkyl, cycloalkyl, aryl, aralkyl, and cycloheteryl; Xm? is a m-fold negatively charged anion; m is an integer being equal or greater than 1; and k is n/m in the preparation of an anti-infective medicament, as preservative and penetration enhancer.
    Type: Application
    Filed: September 16, 2011
    Publication date: January 5, 2012
    Inventors: Georg Ludwig Kis, Christian Schoch, Jozsef Szejtli
  • Publication number: 20100056476
    Abstract: The present invention relates to a pharmaceutical composition comprising a peranhydrocyclodextrin, a drug and a carrier, to the use of a peranhydrocyclodextrin as a drug transport enhancer (e.g. permeation enhancer), and to the use of a peranhydrocyclodextrin in the preparation of a pharmaceutical composition as a synergistic adjunctive system.
    Type: Application
    Filed: November 12, 2009
    Publication date: March 4, 2010
    Inventors: Lajos Szente, Jozsef Szejtli, Laszio Jicsinszky, Georg Ludwig Kis, Christian Scnoch
  • Publication number: 20090110734
    Abstract: Use of a compound of formula (I): wherein the symbol represents a n-valent residue derived from a cyclodextrin compound by removing n of its hydroxyl groups; n is a number greater than 0 and represents the average number of substituents of formula per molecule of said compound; h is 0 or 1; R1 is a di-valent group selected from alkylene, hydroxy alkylene, halogeno alkylene, monocyclic aralkylene, cycloalkylene and phenylene; R2, R3 and R4 are each independently of one another a group selected from alkyl, cycloalkyl, aryl, aralkyl, and cycloheteryl; xm? is a m-fold negatively charged anion; m is an integer being equal or greater than 1; and k is n/m in the preparation of an anti-infective medicament, as preservative and penetration enhancer.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 30, 2009
    Inventors: Georg Ludwig Kis, Christian Schoch, Jozsef Szejtli
  • Publication number: 20080299166
    Abstract: The present invention relates to novel materials, particularly biomaterials, in form of a precipitate, comprising at least an anionic polymeric component which is as such soluble in water and an amphiphilic ammonium-type component, which precipitate is obtainable by a process including the following steps: 1. contacting the anionic polymeric component and an cyclodextrin component in an aqueous medium, and 2. adding to the mixture obtained in step 1 said amphiphilic ammonium-type component, wherein said components are present in amounts effective to form said precipitate, and preferably to corresponding precipitates additionally comprising said cyclodextrin component. Both types of precipitates may optionally comprise one or more further components. The precipitates are particularly useful as controlled-release depot formulations suitable for long-lasting delivery of said further components.
    Type: Application
    Filed: July 24, 2008
    Publication date: December 4, 2008
    Inventors: Lajos Szente, Jozsef Szejtli, Gyorgy L. Kis, Christian Schoch
  • Publication number: 20080287553
    Abstract: The present invention relates to a pharmaceutical composition comprising a peranhydrocyclodextrin, a drug and a carrier, to the use of a peranhydrocyclodextrin as a drug transport enhancer (e.g. permeation enhancer), and to the use of a peranhydrocyclodextrin in the preparation of a pharmaceutical composition as a synergistic adjunctive system.
    Type: Application
    Filed: July 15, 2008
    Publication date: November 20, 2008
    Inventors: Lajos Szente, Jozsef Szejtli, Laszlo Jicsinszky, Georg Ludwig Kis, Christian Schoch
  • Publication number: 20070282013
    Abstract: The present invention relates to a pharmaceutical composition comprising a peranhydrocyclodextrin a drug and a carrier, to the use of a peranhydrocyclodextrin as a drug transport enhancer (e.g. permeation enhancer), and to the use of a peranhydrocyclodextrin in the preparation of a pharmaceutical composition as a synergistic adjunctive system.
    Type: Application
    Filed: August 14, 2007
    Publication date: December 6, 2007
    Inventors: Lajos Szente, Jozsef Szejtli, Laszlo Jicsinszky, Georg Kis, Christian Schoch
  • Patent number: 7189798
    Abstract: This invention relates to new cyclodextrin derivatives, processes for producing these cyclodextrin derivatives, and inclusion complexes comprised of the new cyclodextrin derivatives and guest molecules, as well as methods of making such materials and related materials and methods of using the same.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: March 13, 2007
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Steven N. Falling, Juanelle L. Lambert, Shannon E. Large, Jozsef Szejtli, Lajos Szente, Laszlo Jicsinszky
  • Publication number: 20070042994
    Abstract: The present invention relates to a pharmaceutical composition comprising a peranhydrocyclodextrin a drug and a carrier, to the use of a peranhydrocyclodextrin as a drug transport enhancer (e.g. permeation enhancer), and to the use of a peranhydrocyclodextrin in the preparation of a pharmaceutical composition as a synergistic adjunctive system.
    Type: Application
    Filed: July 2, 2004
    Publication date: February 22, 2007
    Inventors: Lajos Szente, Jozsef Szejtli, Laszio Jicsinszky, Georg Kis, Christian Schoch
  • Publication number: 20050222085
    Abstract: Use of a compound of formula (I), wherein the symbol (a) represents a n-valent residue derived from a cyclodextrin compound by removing n of its hydroxyl groups; n is a number greater than 0 and represents the average number of substituents of formula (II) per molecule of said compound; h is 0 or 1; R1 is a di-valent group selected from alkylene, hydroxy alkylene, halogeno alkylene, monocyclic aralkylene, cycloalkylene and phenylene; R2, R3 and R4 are each independently of one another a group selected from alkyl, cycloalkyl, aryl, aralkyl and cycloheteryl; Xm? is a m-fold negatively charged anion; m is an integer being equal or greater than 1; and k is n/m in the preparation of an anti-infective medicament, as preservative and penetration enhancer.
    Type: Application
    Filed: June 12, 2003
    Publication date: October 6, 2005
    Inventors: Georg Kis, Christian Schoch, Jozsef Szejtli
  • Publication number: 20050163853
    Abstract: The present invention relates to novel materials, particularly biomaterials, in form of a precipitate, comprising at least an anonic polymeric component which is as such soluble in water and an amphiphilic ammonium-type component, which precipitate is obtainable by a process including the following steps: contacting the anionic polymeric component and an cylcodextrin component in an aqueous medium, and adding to the mixture obtained in step 1 said amphiphilic ammonium-type component, wherein said component are present in amounts effective to form said precipitate, and preferably to corresponding precipitates additionally comprising said cycxlodextrin component. Both types of precipitates may optionally comprise one or more further components. The precipitates are particularly useful as controlled-release depot formulations suitable for long-lasting delivery of said further components.
    Type: Application
    Filed: April 17, 2003
    Publication date: July 28, 2005
    Inventors: Lajos Szente, Jozsef Szejtli, Gyorgy Kis, Christian Schoch
  • Publication number: 20040063663
    Abstract: The present invention is directed to a method of making an inclusion complex comprising an acylated cyclodextrin host molecule and a guest molecule, wherein the method comprises the steps of: a) contacting the acylated cyclodextrin host molecule and the guest molecule to form an inclusion complex; and b) precipitating the inclusion complex in an aqueous medium. The present invention is further directed to an inclusion complex comprising an acylated cyclodextrin host molecule and a guest molecule, wherein the guest molecule comprises from about 2% (wt.) to about 15% (wt.) of the inclusion complex. Moreover, the present invention relates to a composition comprising a polymer and an inclusion complex, wherein the inclusion complex comprises an acylated cyclodextrin host molecule and a guest molecule and medical devices and solid pharmaceutical compositions comprised thereof.
    Type: Application
    Filed: September 30, 2003
    Publication date: April 1, 2004
    Inventors: Charles M. Buchanan, Matthew D. Wood, Jozsef Szejtli, Lajos Szente, Maria Vikmon
  • Publication number: 20040054164
    Abstract: This invention relates to new cyclodextrin derivatives, processes for producing these cyclodextrin derivatives, and inclusion complexes comprised of the new cyclodextrin derivatives and guest molecules, as well as methods of making such materials and related materials and methods of using the same.
    Type: Application
    Filed: June 24, 2003
    Publication date: March 18, 2004
    Applicant: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Steven N. Falling, Juanelle L. Lambert, Shannon E. Large, Jozsef Szejtli, Lajos Szente, Laszlo Jicsinszky
  • Patent number: 6610671
    Abstract: This invention relates to new cyclodextrin derivatives, processes for producing these cyclodextrin derivatives, and inclusion complexes comprised of the new cyclodextrin derivatives and guest molecules, as well as methods of making such materials and related materials and methods of using the same.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: August 26, 2003
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Steven N. Falling, Juanelle L. Lambert, Shannon E. Large, Jozsef Szejtli, Lajos Szente, Laszlo Jicsinszky
  • Publication number: 20020128468
    Abstract: This invention relates to new cyclodextrin derivatives, processes for producing these cyclodextrin derivatives, and inclusion complexes comprised of the new cyclodextrin derivatives and guest molecules, as well as methods of making such materials and related materials and methods of using the same.
    Type: Application
    Filed: January 11, 2002
    Publication date: September 12, 2002
    Inventors: Charles M. Buchanan, Steven N. Falling, Juanelle L. Lambert, Shannon E. Large, Jozsef Szejtli, Lajos Szente, Laszlo Jicsinszky
  • Patent number: 6432928
    Abstract: This invention provides inclusion complexes of Taxol ((2aR-(a&agr;,4&bgr;,4&agr;&bgr;,6&bgr;,9&agr;(&agr;R*,&bgr;S*),11&agr;,12&agr;,12a&agr;,12b&agr;))-&bgr;-(benzoylamino)-&agr;-hydroxy-benzene-propanoic acid 6,12-b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclo-deca-(3,4)-benz-(1,2-b)-oxeth-9-yl-ester)) or Taxotere (butoxycarbonyl-10-desacetyl-N-debenzoyl-Taxol) or Taxus extracts formed with a cyclodextrin derivative and a co-solvent. This invention relates to pharmaceutical composition with increased water-solubility and stability. This invention provides the process for the preparation of an inclusion complex of Taxol or Taxotere or a brevifolia extract of Taxus formed with a cyclodextrin derivative and a co-solvent.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: August 13, 2002
    Assignee: Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
    Inventors: Lajos Szente, Jozsef Szejtli, Maria Vikmon nee Kiraly, Julia Szeman
  • Publication number: 20020025946
    Abstract: The present invention is directed to a method of making an inclusion complex comprising an acylated cyclodextrin host molecule and a guest molecule, wherein the method comprises the steps of: a)contacting the acylated cyclodextrin host molecule and the guest molecule to form an inclusion complex; and b) precipitating the inclusion complex in an aqueous medium. The present invention is further directed to an inclusion complex comprising an acylated cyclodextrin host molecule and a guest molecule, wherein the guest molecule comprises from about 2% (wt.) to about 15% (wt.) of the inclusion complex. Moreover, the present invention relates to a composition comprising a polymer and an inclusion complex, wherein the inclusion complex comprises an acylated cyclodextrin host molecule and a guest molecule and medical devices and solid pharmaceutical compositions comprised thereof.
    Type: Application
    Filed: April 26, 2001
    Publication date: February 28, 2002
    Inventors: Charles M. Buchanan, Matthew D. Wood, Jozsef Szejtli, Lajos Szente, Maria Vikmon
  • Patent number: 6284746
    Abstract: The present invention relates to an active inclusion complex of Taxol, Taxotere or a Taxus extract formed with a cyclodextrin-derivative, a pharmaceutical composition containing the same, a process of preparation and a method of treatment.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: September 4, 2001
    Assignee: Chinoin, Ltd.
    Inventors: Lajos Szente, József Szejtli, Andrasne Vikmon
  • Patent number: 5698535
    Abstract: New inclusion complexes which are stable in their so-lid state formed of SIN-1A and cyclodextrins or cyclodextrin derivatives and optionally also containing ions as catalyst or stabilizer. The complexes release nitric oxide at room temperature upon dissolving in water or aqueous systems. The ions are preferably carboxylic acid anions such as acetate, formiate, propionate, ascorbinate, tartarate and/or lactate and/or inorganic acid anions such as phosphate, phosphite, borate, carbonate, hydrocarbonate, sulfate, sulfite and/or cations such as alkali and/or ammonium.Pharmaceutical compositions as well as kits containing the complexes. The kits are to be used as NO-liberating standards to release NO in a predictable amount and rate on dissolving in aqueous media.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: December 16, 1997
    Assignee: Therabel Industries, S.A.
    Inventors: Joseph Geczy, Andrasne Vikmon, Jozsef Szejtli, Lajos Szente, Julianna Szeman
  • Patent number: 5403840
    Abstract: The invention relates to inclusion complexes of N-ethoxycarbonyl-3-morpholino-sydnonimine or its salts formed with a cyclodextrin derivatives, preparation thereof and pharmaceutical compositions containing the same.The inclusion complex of N-ethoxycarbonyl-3-morpholino-sydnonimine or its salt formed with cyclodextrin derivative is prepared bya) reacting the N-ethoxycarbonyl-3-morpholino-sydnonimine or its salt and the cyclodextrin derivative in a solvent medium, and if desired recovering the complex from the solution by dehydration, orb) high energy milling of the N-ethoxycarbonyl-3-morpholino-sydnonimine or its salt and the cyclodextrin derivative.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: April 4, 1995
    Assignee: Chinoin Gyogyszer-Es Vegyeszeti Termekek Gyar Rt.
    Inventors: Maria Vikmon, Jozsef Szejtli, Jozsef Gaal, Istvan Hermecz, Agnes Horvath, Katalin Marmarosi, Gabor Horvath, Iren Munkacsi