Patents by Inventor Thomas Backensfeld

Thomas Backensfeld 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).

  • Patent number: 7569557
    Abstract: Pharmaceutical compositions comprising low doses of sensitive complexes between an estrogen and a cyclodextrin are provided with improved stability. In specific embodiments the composition comprises a complex between ethinyl estradiol and ?-cyclodextrin in a granulate preparation and in yet another embodiment the composition comprises a limited amount of polyvinylpyrrolidone since this excipient was found to degrade ethinyl estradiol. Furthermore, a method for improving the stability of an estrogen in a composition and for manufacturing such a stable composition is provided. Essentially, the granulate preparation are manufactured under careful control of the relative humidity.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: August 4, 2009
    Assignee: Bayer Schering Pharma AG
    Inventors: Thomas Backensfeld, Wolfgang Heil, Ralph Lipp
  • Publication number: 20070093451
    Abstract: Pharmaceutical compositions comprising low doses of sensitive complexes between an estrogen and a cyclodextrin are provided with improved stability. In specific embodiments the composition comprises a complex between ethinyl estradiol and ?-cyclodextrin in a granulate preparation and in yet another embodiment the composition comprises a limited amount of polyvinylpyrrolidone since this excipient was found to degrade ethinyl estradiol. Furthermore, a method for improving the stability of an estrogen in a composition and for manufacturing such a stable composition is provided. Essentially, the granulate preparation are manufactured under careful control of the relative humidity.
    Type: Application
    Filed: December 4, 2006
    Publication date: April 26, 2007
    Inventors: Thomas Backensfeld, Wolfgang Heil, Ralph Lipp
  • Publication number: 20070059359
    Abstract: The invention relates to immediate-release and high-drug-load solid pharmaceutical formulations comprising non-micronized (4-chlorophenyl)[4-(4-pyridylmethyl)-phthalazin-1-yl] as well as pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: June 7, 2006
    Publication date: March 15, 2007
    Inventors: Thomas Backensfeld, Adrian Funke, Kai Juergens, Kai Thode, Torsten Wagner
  • Patent number: 7163931
    Abstract: Pharmaceutical compositions comprising low doses of sensitive complexes between an estrogen and a cyclodextrin are provided with improved stability. In specific embodiments the composition comprises a complex between ethinyl estradiol and ?-cyclodextrin in a granulate preparation and in yet another embodiment the composition comprises a limited amount of polyvinylpyrrolidone since this excipient was found to degrade ethinyl estradiol. Furthermore, a method for improving the stability of an estrogen in a composition and for manufacturing such a stable composition is provided. Essentially, the granulate preparation are manufactured under careful control of the relative humidity.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: January 16, 2007
    Assignee: Schering Aktiengesellchaft
    Inventors: Thomas Backensfeld, Wolfgang Heil, Ralph Lipp
  • Publication number: 20060275365
    Abstract: The invention relates to immediate-release and high-drug-load solid pharmaceutical formulations comprising micronised (4-chlorophenyl)[4-(4-pyridylmethyl)-phthalazin-1-yl] as well as pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 7, 2006
    Inventors: Thomas Backensfeld, Kai Juergens, Thorsten Wagner, Adrian Funke, Kai Thode, Heiko Kranz
  • Patent number: 6958326
    Abstract: Pharmaceutical compositions comprising low doses of sensitive complexes between an estrogen and a cyclodextrin are provided with improved stability. In specific embodiments the composition comprises a complex between ethinyl estradiol and ?-cyclodextrin in a granulate preparation and in yet another embodiment the composition comprises a limited amount of polyvinylpyrrolidone since this excipient was found to degrade ethinyl estradiol. Furthermore, a method for improving the stability of an estrogen in a composition and for manufacturing such a stable composition is provided. Essentially, the granulate preparation are manufactured under careful control of the relative humidity.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: October 25, 2005
    Assignee: Schering AG
    Inventors: Thomas Backensfeld, Wolfgang Heil, Ralph Lipp
  • Publication number: 20050182024
    Abstract: Pharmaceutical compositions comprising low doses of sensitive complexes between an estrogen and a cyclodextrin are provided with improved stability. In specific embodiments the composition comprises a complex between ethinyl estradiol and ?-cyclodextrin in a granulate preparation and in yet another embodiment the composition comprises a limited amount of polyvinylpyrrolidone since this excipient was found to degrade ethinyl estradiol. Furthermore, a method for improving the stability of an estrogen in a composition and for manufacturing such a stable composition is provided. Essentially, the granulate preparation are manufactured under careful control of the relative humidity.
    Type: Application
    Filed: April 11, 2005
    Publication date: August 18, 2005
    Inventors: Thomas Backensfeld, Wolfgang Heil, Ralph Lipp
  • Publication number: 20040223983
    Abstract: The invention relates to pharmaceutical preparations that contain at least one emulsifier, at least one auxiliary emulsifier and/or solvent as well as at least one lipid, characterized in that the mass ratio of emulsifier to auxiliary emulsifier and/or solvent (Smix) is 1:1 to 9:1 and the total lipid proportion is >0% (m/m), whereby this preparation at least partially inhibits at least one intestinal enzyme and/or at least one intestinal efflux system. These preparations can be used to increase the bioavailability of pharmaceutical substances that are lipophilic and/or substrates of intestinal metabolizing enzymes and/or intestinal efflux systems, especially steroids.
    Type: Application
    Filed: October 7, 2003
    Publication date: November 11, 2004
    Inventors: Philip Lienau, Thomas Backensfeld, Andreas Reichel, Tanja Jung
  • Publication number: 20030212043
    Abstract: Described are inclusion complexes formed between cyclodextrin and drospirenone. In a specific embodiment of the invention, the cyclodextrin is &bgr;-cyclodextrin. The invention further relates to methods of providing such an inclusion complex, and to the use of said inclusion complex for improving the solubility of drospirenone, for providing pharmaceutical compositions, for use as a medicament in the treatment of symptoms associated with menopause and in female contraception.
    Type: Application
    Filed: June 19, 2003
    Publication date: November 13, 2003
    Applicant: Schering Aktiengesellschaft
    Inventors: Thomas Backensfeld, Wolfgang Heil
  • Patent number: 6610670
    Abstract: Described are inclusion complexes formed between cyclodextrin and drospirenone. In a specific embodiment of the invention, the cyclodextrin is &bgr;-cyclodextrin. The invention further relates to methods of providing such an inclusion complex, and to the use of said inclusion complex for improving the solubility of drospirenone, for providing pharmaceutical compositions, for use as a medicament in the treatment of symptoms associated with menopause and in female contraception.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: August 26, 2003
    Assignee: Schering Aktiengesellschaft
    Inventors: Thomas Backensfeld, Wolfgang Heil
  • Publication number: 20020128229
    Abstract: Described are inclusion complexes formed between cyclodextrin and drospirenone. In a specific embodiment of the invention, the cyclodextrin is &bgr;-cyclodextrin. The invention further relates to methods of providing such an inclusion complex, and to the use of said inclusion complex for improving the solubility of drospirenone, for providing pharmaceutical compositions, for use as a medicament in the treatment of symptoms associated with menopause and in female contraception.
    Type: Application
    Filed: December 20, 2001
    Publication date: September 12, 2002
    Applicant: Schering Aktiengesellschaft
    Inventors: Thomas Backensfeld, Wolfgang Heil
  • Patent number: 6156341
    Abstract: Pharmaceutical agents that contain a gallic acid ester as an antioxidant in combination with a steroidal active ingredient, their production and their use.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: December 5, 2000
    Assignee: Schering Aktiensgesellschaft
    Inventors: Thomas Backensfeld, Ralph Lipp, Susanne Keitel
  • Patent number: 5798338
    Abstract: A method and pharmaceutical compositions are disclosed for reducing oxidative degradation of 17 .alpha.-ethinylestradiol comprising combining the estradiol with an effective amount of cyclodextrin, thus forming a cyclodextrin clathrate of the steroid.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: August 25, 1998
    Assignee: Schering Aktiengesellschaft
    Inventors: Thomas Backensfeld, Johannes Tack