Patents by Inventor Michael Limmert

Michael Limmert 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: 10526290
    Abstract: The present invention relates to bendamustine derivatives and related compounds of formula (VII), (VIII) and (IX), and medical uses thereof in particular in cancer therapy.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: January 7, 2020
    Assignee: SYNBIAS PHARMA AG
    Inventors: Helmut Schickaneder, Christian Schickaneder, Armin Buschauer, Stefan Huber, Michael Limmert, Günther Bernhardt, Mathias Lubbe, Harald Hofmeier
  • Patent number: 10442773
    Abstract: The present invention provides for amorphous Letermovir and orally administrable solid pharmaceutical formulations thereof (immediate release formulation). Said amorphous Letermovir is suitable for immediate release formulations when isolated out of an organic solution by either roller-drying said organic solution in a volatile organic solvent, in particular acetone, at a temperature of 30° C. to 60° C., and subsequently drying the amorphous Letermovir obtained, or isolating said amorphous Letermovir by precipitation from water miscible solvents selected from acetone or acetonitrile into excess water as anti-solvent, and subsequently filtrating or centrifuging the amorphous Letermovir obtained. The immediate release formulations of amorphous Letermovir are intended for use in methods of prophylaxis or methods of treatment of diseases associated with the group of Herpesviridae, preferably associated with cytomegalovirus (CMV), even more preferably associated with human cytomegalovirus (HCMV).
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: October 15, 2019
    Assignee: AICURIS ANTI-INFECTIVE CURES GMBH
    Inventors: Wilfried Schwab, Dirk Jung, Christian Schickaneder, Welljanne Martens, Michael Limmert, Clemens Bothe, Mathias Berwe, Nicole Rindermann
  • Publication number: 20160185793
    Abstract: The present invention provides a new method of separating epothilones from one another that can be used on an industrial scale for the selective enrichment of epothilone and to provide a crystalline solid of enhanced purity, which can be used for the production of pharmaceutical preparations without using normal or reverse-phase chromatography or any energy input via distillation apparatus, wherein the new method comprises the steps: a. dissolving a crude containing epothilones in an alkyl ester, b. cooling the solution form a slurry, c. isolating a crystalline solid from the slurry.
    Type: Application
    Filed: August 18, 2014
    Publication date: June 30, 2016
    Inventors: Mathias LUBBE, Christian SCHICKANEDER, Michael LIMMERT
  • Publication number: 20160145216
    Abstract: The present invention provides for amorphous Letermovir and orally administrable solid pharmaceutical formulations thereof (immediate release formulation). Said amorphous Letermovir is suitable for immediate release formulations when isolated out of an organic solution by either roller-drying said organic solution in a volatile organic solvent, in particular acetone, at a temperature of 30° C. to 60° C., and subsequently drying the amorphous Letermovir obtained, or isolating said amorphous Letermovir by precipitation from water miscible solvents selected from acetone or acetonitrile into excess water as anti-solvent, and subsequently filtrating or centrifuging the amorphous Letermovir obtained. The immediate release formulations of amorphous Letermovir are intended for use in methods of prophylaxis or methods of treatment of diseases associated with the group of Herpesviridae, preferably associated with cytomegalovirus (CMV), even more preferably associated with human cytomegalovirus (HCMV).
    Type: Application
    Filed: June 19, 2014
    Publication date: May 26, 2016
    Applicant: AICURIS ANTI-INFECTIVE CURES GMBH
    Inventors: Wilfried SCHWAB, Dirk JUNG, Christian SCHICKANEDER, Welljanne MARTENS, Michael LIMMERT, Clemens BOTHE, Mathias BERWE, Nicole RINDERMANN
  • Patent number: 9156868
    Abstract: The invention relates to aryl- and/or heteroaryl-substituted main group element halides and/or pseudohalides, the use of main group element halides and/or pseudohalides as dopant for the doping of an organic semiconducting matrix material, as charge injection layer, as hole blocker layer, as electrode material, as transport material itself, as memory material in electronic or optoelectronic structural elements.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: October 13, 2015
    Assignee: NOVALED AG
    Inventors: Olaf Zeika, Michael Limmert, Steffen Willmann
  • Patent number: 9118019
    Abstract: The present invention relates to heterocyclic radicals or diradicals, the dimers, oligomers, polymers, dispiro compounds and polycycles thereof, to the use thereof, to organic semiconductive materials and to electronic and optoelectronic components.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: August 25, 2015
    Assignee: NOVALED AG
    Inventors: Michael Limmert, Olaf Zeika, Martin Amman, Horst Hartmann, Ansgar Werner
  • Patent number: 9065055
    Abstract: The present invention relates to a method for preparing doped organic semiconductor materials as well as a formulation which may be utilized in that method. The doped organic semiconductor materials are prepared by preparing a solution or suspension containing at least one dopant precursor, at least one organic material to be doped, and a solvent. The solution or suspension is then applied onto a substrate. After removing the solvent, the dopant precursor is converted into a dopant by application of activation energy. The dopant precursor, which is a dimer, oligomer, polymer, dispiro compound, or polycycle, is cleaved by the application of activation energy.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: June 23, 2015
    Assignee: NOVALED AG
    Inventors: Olaf Zeika, Andrea Lux, Andre Gruessing, Michael Limmert, Horst Hartmann, Ansgar Werner, Martin Ammann
  • Publication number: 20150152066
    Abstract: The present invention relates to bendamustine derivatives and related compounds of formula (VII), (VIII) and (IX), and medical uses thereof in particular in cancer therapy.
    Type: Application
    Filed: June 14, 2013
    Publication date: June 4, 2015
    Applicant: Helmut Schickaneder
    Inventors: Helmut Schickaneder, Christian Schickaneder, Armin Buschauer, Stefan Huber, Michael Limmert, Günther Bernhardt, Mathias Lubbe, Harald Hofmeier
  • Patent number: 9040697
    Abstract: 4,6-dichloro-2-methyl-5-(1-acyl-2-imidazolin-2-yl)-aminopyrimidine is reacted with methanol in the presence of a non-ionic organic base, and moxonidine is obtained directly from the reaction mixture.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: May 26, 2015
    Assignee: AREVIPHARMA GmbH
    Inventors: Harald Hofmeier, Michael Limmert, Heike Heydemüller, Helge Hartenhauer
  • Patent number: 8920944
    Abstract: Use of a precursor of an n-dopant for doping an organic semiconductive material, as a blocking layer, as a charge injection layer, as an electrode material, as a storage material or as a semiconductor material itself in electronic or optoelectronic components, the precursor being selected from the following formulae 1-3c:
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: December 30, 2014
    Assignee: Novaled AG
    Inventors: Michael Limmert, Andrea Lux, Horst Hartmann
  • Publication number: 20140356314
    Abstract: The present invention discloses a 3-[3-(dimethylamino)-1-ethyl-2-methylpropyl]phenol resin complex, preferably an amorphous 3-[3-(dimethylamino)-1-ethyl-2-methylpropyl]phenol resin complex formed by the reaction between a cation exchange resin and 3-[3-(dimethylamino)-1-ethyl-2-methylpropyl]phenol or a pharmaceutically acceptable acid addition salt thereof. It can exhibit an in-vitro release rate of 3-[3-(dimethylamino)-1-ethyl-2-methylpropyl]phenol from the 3-[3-(dimethylamino)-1-ethyl-2-methylpropyl]phenol resin complex which is in accordance with the requirements of Ph. Eur. on “conventional-release dosage forms”.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 4, 2014
    Inventors: Helge HARTENHAUER, Michael LIMMERT
  • Patent number: 8809549
    Abstract: The present invention relates to particular esters of bendamustine and related compounds, and medical uses thereof.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: August 19, 2014
    Inventors: Helmut Schickaneder, Armin Buschauer, Guenther Bernhardt, Christian Schickaneder, Michael Limmert, Stefan Huber
  • Publication number: 20140228383
    Abstract: 4,6-dichloro-2-methyl-5-(1-acyl-2-imidazolin-2-yl)-aminopyrimidine is reacted with methanol in the presence of a non-ionic organic base, and moxonidine is obtained directly from the reaction mixture.
    Type: Application
    Filed: February 5, 2014
    Publication date: August 14, 2014
    Inventors: Harald HOFMEIER, Michael LIMMERT, Heike HEYDEMÜLLER, Helge HARTENHAUER
  • Publication number: 20130289032
    Abstract: The present invention relates to particular esters of bendamustine and related compounds, and medical uses thereof.
    Type: Application
    Filed: April 25, 2013
    Publication date: October 31, 2013
    Inventors: Helmut SCHICKANEDER, Armin Buschauer, Guenther Bernhardt, Christian Schickaneder, Michael Limmert, Stefan Huber
  • Patent number: 8431046
    Abstract: The present invention relates to the use of heterocyclic radicals or diradicals, their dimers, oligomers, polymers, dispiro compounds and polycycles for use as dopant for doping an organic semiconductive matrix material, where the dopants have a structure based on the following formulae.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: April 30, 2013
    Assignee: Novaled AG
    Inventors: Olaf Zeika, Andrea Lux, Andre Gruessing, Michael Limmert, Horst Hartmann, Ansgar Werner
  • Patent number: 8258501
    Abstract: A method of using a metal complex as an n-dopant for doping an organic semiconducting matrix material in order to alter the latter's electrical characteristics is provided. In order to provide n-doped organic semiconductors with matrix materials having a low reduction potential, while achieving high conductivities, the n-dopant is a neutral electron-rich metal complex with a neutral or charged transition metal atom as a central atom and having at least 16 valence electrons. The complex can be polynuclear and can possess at least one metal-metal bond. At least one ligand can form a ? complex with the central atom, which can be a bridge ligand, or it can contain at least one carbanion-carbon atom or a divalent atom. Methods for providing the novel n-dopants are provided.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: September 4, 2012
    Assignee: Novaled AG
    Inventors: Ansgar Werner, Olaf Kühl, Simon Gessler, Horst Hartmann, Andre Grüssing, Michael Limmert, Andrea Lux, Kentaro Harada
  • Publication number: 20120146012
    Abstract: The present invention relates to heterocyclic radicals or diradicals, the dimers, oligomers, polymers, dispiro compounds and polycycles thereof, to the use thereof, to organic semiconductive materials and to electronic and optoelectronic components.
    Type: Application
    Filed: February 16, 2012
    Publication date: June 14, 2012
    Applicant: NOVALED AG
    Inventors: Michael Limmert, Olaf Zeika, Martin Amman, Horst Hartmann, Ansgar Werner
  • Patent number: 8134146
    Abstract: The present invention relates to heterocyclic radicals or diradicals, the dimers, oligomers, polymers, dispiro compounds and polycycles thereof, to the use thereof to organic semiconductive materials and to electronic and optoelectronic components.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: March 13, 2012
    Assignee: Novaled AG
    Inventors: Michael Limmert, Olaf Zeika, Martin Ammann, Horst Hartmann, Ansgar Werner
  • Publication number: 20110108772
    Abstract: The present invention relates to the use of heterocyclic radicals or diradicals, their dimers, oligomers, polymers, dispiro compounds and polycycles for use as dopant for doping an organic semiconductive matrix material, where the dopants have a structure based on the following formulae.
    Type: Application
    Filed: March 16, 2007
    Publication date: May 12, 2011
    Applicant: NOVALED AG
    Inventors: Olaf Zeika, Andrea Lux, Andre Grussing, Michael Limmert, Horst Hartmann, Ansgar Werner
  • Publication number: 20100233844
    Abstract: The present invention relates to a method for preparing doped organic semiconductor materials
    Type: Application
    Filed: March 21, 2007
    Publication date: September 16, 2010
    Applicant: Novaled AG
    Inventors: Olaf Zeika, Andrea Lux, Andre Grussing, Michael Limmert, Horst Hartmann, Ansgar Werner, Martin Ammann