Patents by Inventor Hakan Nyqvist

Hakan Nyqvist 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: 20050085532
    Abstract: A new salt (R)-3-N,N-dicyclobutylamino-8-fluoro-3,4-dihydro-2H-1-benzopyran-5-carboxamide hydrogen tartrate, particularly the (2R,3R)-tartrate thereof, most particularly the (R)-3-N,N-dicyclobutylamino-8-fluoro-3,4-dihydro-2H-1-benzopyran-5-carboxamide hydrogen (2R,3R)-tartrate monohydrate, processes for the manufacture of said tartrate salt, the use of the salt in medicine, the use of the tartrate salt in the manufacture of pharmaceutical formulations, and a method for the treatment of CNS disorders by administration of the tartrate salt to a host in need of such treatment.
    Type: Application
    Filed: October 12, 2004
    Publication date: April 21, 2005
    Inventors: Hakan Nyqvist, Daniel Sohn
  • Patent number: 6858645
    Abstract: A new salt (R)-3-N,N-dicyclobutylamino-8-fluoro-3,4-dihydro-2H-1-benzopyran-5-carboxamide hydrogen tartrate, particularly the (2R,3R)-tartrate thereof, most particularly the (R)-3-N,N-dicyclobutylamino-8-fluoro-3,4-dihydro-2H-1-benzopyran-5-carboxamide hydrogen (2R,3R)-tartrate monohydrate, processes for the manufacture of said tartrate salt, the use of the salt in medicine, the use of the tartrate salt in the manufacture of pharmaceutical formulations, and a method for the treatment of CNS disorders by administration of the tartrate salt to a host in need of such treatment.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: February 22, 2005
    Assignee: AstraZeneca AB
    Inventors: Hakan Nyqvist, Daniel D Sohn
  • Publication number: 20040204482
    Abstract: The present invention relates to an extended release oral dosage form of a pharmaceutically active substance, (R)-3-N,N-dicyclobutylamino-8-fluoro-3,4-dihydro-2H-1-benzopyran-5-carboxamide, in the form of the free base or pharmaceutically acceptable salts and/or hydrates or solvates thereof. Furthermore, the invention relates to an extended release oral dosage form that provides a defined blood concentration profile having no rapid initial rise in blood plasma concentration of said active substance when administered at low dose. The invention further relates to processes for preparing said dosage form, the use of said dosage form and a method of prevention and/or treatment of CNS disorders and related medical disturbances using said dosage form.
    Type: Application
    Filed: February 27, 2004
    Publication date: October 14, 2004
    Inventors: Karin Ellstrom, Ulf Kjellberg, Hakan Nyqvist, Annika Schweighofer, Maritta Temsamani
  • Publication number: 20040197404
    Abstract: The present invention relates to a new extended release oral dosage form of a good soluble pharmaceutically active substance. More particularly, the invention relates to an extended release oral dosage form that provides a defined blood concentration profile having no rapid initial rise in blood plasma concentration of the good soluble active substance when administered at low dose. The invention further relates to processes for preparing said dosage form, the use of said dosage form and a method of prevention and/or treatment of CNS disorders and related medical disturbances using said dosage form.
    Type: Application
    Filed: February 27, 2004
    Publication date: October 7, 2004
    Inventors: Karin Ellstrom, Ulf Kjellberg, Hakan Nyqvist, Anders Ringberg, Annika Schweighofer
  • Publication number: 20030109576
    Abstract: A new salt (R)-3-N,N-dicyclobutylamino-8-fluoro-3,4-dihydro-2H-1-benzopyran-5-carboxamide hydrogen tartrate, particularly the (2R,3R)-tartrate thereof, most particularly the (R)-3-N,N-dicyclobutylamino-8-fluoro-3,4-dihydro-2H-1-benzopyran-5-carboxamide hydrogen (2R,3R)-tartrate monohydrate, processes for the manufacture of said tartrate salt, the use of the salt in medicine, the use of the tartrate salt in the manufacture of pharmaceutical formulations, and a method for the treatment of CNS disorders by administration of the tartrate salt to a host in need of such treatment.
    Type: Application
    Filed: June 8, 1998
    Publication date: June 12, 2003
    Inventors: HAKAN NYQVIST, DANIEL D SOHN
  • Patent number: 6475524
    Abstract: The invention provides a process for crystallization of amorphous and/or meta-stable crystalline regions of preformed particles by treating the particles with a supercritical or subcritical fluid containing an anti-solvent and a solvent. The invention further provides formulations comprising particles produced according to the present process containing one or more pharmacologically active substances and one or more pharmaceutically acceptable excipients, use of said formulations in the treatment of an allergic and/or inflammatory condition of the nose or lungs and methods for treatment of such conditions.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: November 5, 2002
    Assignee: AstraZeneca AB
    Inventors: Mikael Bisrat, Saeed Moshashaee, Håkan Nyqvist, Mustafa Demirbüker
  • Patent number: 6461642
    Abstract: The invention provides a process for preparing essentially crystalline particles containing a substance in solvated form, by dissolving the substance in a first solvent, introducing the solution and a supercritical or subcritical fluid into an apparatus, wherein the fluid contains an anti-solvent and a second solvent, which is water. Preferably, the anti-solvent is carbon dioxide which is totally saturated with the second solvent, which is water. The invention further provides formulations comprising particles produced according to the present process containing one or more pharmacologically active substances and one or more pharmaceu-tically acceptable excipients, use of said formulations in the treatment of an allergic and/or inflammatory condition of the nose or lungs and methods for treatment of such conditions.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: October 8, 2002
    Assignee: AstraZeneca AB
    Inventors: Mikael Bisrat, Saeed Moshashaee, Håkan Nyqvist, Mustafa Demirbüker