Patents by Inventor Ken Liljegren

Ken Liljegren 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: 20110046218
    Abstract: The present invention relates to the crystalline base of the well known antidepressant drug escitalopram, S-1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofurancarbonitrile, formulations of said base, a process for the preparation of purified salts of escitalopram, such as the oxalate, using the base, the salts obtained by said process and formulations containing such salts, and a process for the preparation of purified escitalopram free base or salts of escitalopram, such as the oxalate, using the hydrobromide, the salts obtained by said process and formulations containing such salts. Finally the present invention relates to an orodispersible tablet having a hardness of at least 22 N and an oral-disintegration time of less than 120 s and comprising an active pharmaceutical ingredient adsorbed onto a water soluble filler wherein the active pharmaceutical ingredient has a melting point in the range of 40-100° C., as well as a method for making such an orodispersible tablet.
    Type: Application
    Filed: November 1, 2010
    Publication date: February 24, 2011
    Applicant: H. LUNDBECK A/S
    Inventors: Robert Dancer, Hans Petersen, Ole Nielsen, Michael Harold Rock, Helle Eliasen, Ken Liljegren
  • Patent number: 7834201
    Abstract: The present invention relates to the crystalline base of the well known antidepressant drug escitalopram, S-1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofurancarbonitrile, formulations of said base, a process for the preparation of purified salts of escitalopram, such as the oxalate, using the base, the salts obtained by said process and formulations containing such salts, and a process for the preparation of purified escitalopram free base or salts of escitalopram, such as the oxalate, using the hydrobromide, the salts obtained by said process and formulations containing such salts. Finally the present invention relates to an orodispersible tablet having a hardness of at least 22 N and an oral-disintegration time of less than 120 s and comprising an active pharmaceutical ingredient adsorbed onto a water soluble filler wherein the active pharmaceutical ingredient has a melting point in the range of 40-100° C., as well as a method for making such an orodispersible tablet.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: November 16, 2010
    Assignee: H. Lundbeck A/S
    Inventors: Robert Dancer, Hans Petersen, Ole Nielsen, Michael Harold Rock, Helle Eliasen, Ken Liljegren
  • Patent number: 7723533
    Abstract: The present invention relates to the crystalline base of the well known antidepressant drug escitalopram, S-1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzo-furancarbonitrile, formulations of said base, a process for the preparation of purified salts of escitalopram, such as the oxalate, using the base, the salts obtained by said process and formulations containing such salts, and a process for the preparation of purified escitalopram free base or salts of escitalopram, such as the oxalate, using the hydrobromide, the salts obtained by said process and formulations containing such salts. Finally the present invention relates to an orodispersible tablet having a hardness of at least 22 N and an oral-disintegration time of less than 120 s and comprising an active pharmaceutical ingredient adsorbed onto a water soluble filler wherein the active pharmaceutical ingredient has a melting point in the range of 40-100° C., as well as a method for making such an orodispersible tablet.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: May 25, 2010
    Assignee: H. Lundbeck A/S
    Inventors: Robert Dancer, Hans Petersen, Ole Nielsen, Michael Harold Rock, Helle Eliasen, Ken Liljegren
  • Patent number: 7560576
    Abstract: The present invention relates to the crystalline base of the well known antidepressant drug escitalopram, S-1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzo-furancarbonitrile, formulations of said base, a process for the preparation of purified salts of escitalopram, such as the oxalate, using the base, the salts obtained by said process and formulations containing such salts, and a process for the preparation of purified escitalopram free base or salts of escitalopram, such as the oxalate, using the hydrobromide, the salts obtained by said process and formulations containing such salts. Finally the present invention relates to an orodispersible tablet having a hardness of at least 22 N and an oral-disintegration time of less than 120 s and comprising an active pharmaceutical ingredient adsorbed onto a water soluble filler wherein the active pharmaceutical ingredient has a melting point in the range of 40-100° C., as well as a method for making such an orodispersible tablet.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: July 14, 2009
    Assignee: H. Lundbeck A/S
    Inventors: Robert Dancer, Hans Petersen, Ole Nielsen, Michael Harold Rock, Helle Eliasen, Ken Liljegren
  • Publication number: 20080305164
    Abstract: Crystalline particles of escitalopram oxalate with a particle size of at least 40 ?m is disclosed. Method for the manufacture of said crystalline particles and pharmaceutical compositions comprising said crystalline particles are also disclosed.
    Type: Application
    Filed: August 22, 2008
    Publication date: December 11, 2008
    Applicant: H. LUNDBECK A/S
    Inventors: Troels Volsgaard Christensen, Ken Liljegren, Michiel Onne Elema, Lene Andresen, Shashank Mahashabde, Sebastian P. Assenza
  • Patent number: 7420068
    Abstract: The present invention discloses crystalline particles of escitalopram oxalate which either have a broad particle size distribution or comprise at least 0.01% (w/w) of Z-4-(4-dimethylamino-1-(4-fluorophenyl)-but-1-enyl)-3-hydroxymethyl-benzonitrile, said particles being suitable for use in direct compression. Furthermore, the invention discloses a novel pharmaceutical unit dosage form containing such crystalline particles of escitalopram oxalate as well as methods for manufacture of such crystalline particles of escitalopram oxalate Finally, the invention provides a method for reduction of the amount of hydroxyl containing impurities in a solution of citalopram or escitalopram.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: September 2, 2008
    Assignee: H. Lundbeck A/S
    Inventors: Kim Bojstrup Jensen, Rikke Eva Humble, Ken Liljegren, Troels Volsgaard Christensen
  • Patent number: 7420069
    Abstract: Crystalline particles of escitalopram oxalate with a particle size of at least 40 ?m is disclosed. Method for the manufacture of said crystalline particles and pharmaceutical compositions comprising said crystalline particles are also disclosed.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: September 2, 2008
    Assignee: H. Lundbeck A/S
    Inventors: Troels Volsgaard Christensen, Ken Liljegren, Michiel Onne Elema, Lene Andresen, Shashank Mahashabde, Sebastian P. Assenza
  • Publication number: 20080161388
    Abstract: The present invention relates to the crystalline base of the well known antidepressant drug escitalopram, S-1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzo-furancarbonitrile, formulations of said base, a process for the preparation of purified salts of escitalopram, such as the oxalate, using the base, the salts obtained by said process and formulations containing such salts, and a process for the preparation of purified escitalopram free base or salts of escitalopram, such as the oxalate, using the hydrobromide, the salts obtained by said process and formulations containing such salts. Finally the present invention relates to an orodispersible tablet having a hardness of at least 22 N and an oral-disintegration time of less than 120 s and comprising an active pharmaceutical ingredient adsorbed onto a water soluble filler wherein the active pharmaceutical ingredient has a melting point in the range of 40-100° C., as well as a method for making such an orodispersible tablet.
    Type: Application
    Filed: March 12, 2008
    Publication date: July 3, 2008
    Applicant: H. LUNDBECK A/S
    Inventors: Robert Dancer, Hans Petersen, Ole Nielsen, Michael Harold Rock, Helle Eliasen, Ken Liljegren
  • Publication number: 20080161584
    Abstract: The present invention relates to the crystalline base of the well known antidepressant drug escitalopram, S-1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzo-furancarbonitrile, formulations of said base, a process for the preparation of purified salts of escitalopram, such as the oxalate, using the base, the salts obtained by said process and formulations containing such salts, and a process for the preparation of purified escitalopram free base or salts of escitalopram, such as the oxalate, using the hydrobromide, the salts obtained by said process and formulations containing such salts. Finally the present invention relates to an orodispersible tablet having a hardness of at least 22 N and an oral-disintegration time of less than 120 s and comprising an active pharmaceutical ingredient adsorbed onto a water soluble filler wherein the active pharmaceutical ingredient has a melting point in the range of 40-100° C., as well as a method for making such an orodispersible tablet.
    Type: Application
    Filed: March 12, 2008
    Publication date: July 3, 2008
    Applicant: H. LUNDBECK A/S
    Inventors: Robert Dancer, Hans Petersen, Ole Nielsen, Michael Harold Rock, Helle Eliasen, Ken Liljegren
  • Publication number: 20070212412
    Abstract: The present invention relates to a pharmaceutical composition comprising sertindole and a protective agent absorbing radiation with a wavelenght below 400 nm. The present invention also relates to the use of sertindole for the preparation of a pharmaceutical composition comprising sertindole and a coating layer compsrising said protective agent, such as ironoxide, for the treatment of schizophrenia.
    Type: Application
    Filed: September 8, 2006
    Publication date: September 13, 2007
    Applicant: H. Lundbeck A/S
    Inventors: Flemming Olsen, Anne Christensen, Ken Liljegren
  • Publication number: 20070021499
    Abstract: The present invention relates to the crystalline base of the well known antidepressant drug escitalopram, S-1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofurancarbonitrile, formulations of said base, a process for the preparation of purified salts of escitalopram, such as the oxalate, using the base, the salts obtained by said process and formulations containing such salts, and a process for the preparation of purified escitalopram free base or salts of escitalopram, such as the oxalate, using the hydrobromide, the salts obtained by said process and formulations containing such salts. Finally the present invention relates to an orodispersible tablet having a hardness of at least 22 N and an oral-disintegration time of less than 120 s and comprising an active pharmaceutical ingredient adsorbed onto a water soluble filler wherein the active pharmaceutical ingredient has a melting point in the range of 40-100° C., as well as a method for making such an orodispersible tablet.
    Type: Application
    Filed: June 21, 2006
    Publication date: January 25, 2007
    Applicant: H. Lundbeck A/S
    Inventors: Robert Dancer, Hans Petersen, Ole Nielsen, Michael Rock, Helle Eliasen, Ken Liljegren
  • Publication number: 20050196453
    Abstract: The present invention discloses crystalline particles of escitalopram oxalate which either have a broad particle size distribution or comprise at least 0.01% (w/w) of Z-4-(4-dimethylamino-1-(4-fluorophenyl)-but-1-enyl)-3-hydroxymethyl-benzonitrile, said particles being suitable for use in direct compression. Furthermore, the invention discloses a novel pharmaceutical unit dosage form containing such crystalline particles of escitalopram oxalate as well as methods for manufacture of such crystalline particles of escitalopram oxalate Finally, the invention provides a method for reduction of the amount of hydroxyl containing impurities in a solution of citalopram or escitalopram.
    Type: Application
    Filed: May 21, 2004
    Publication date: September 8, 2005
    Applicant: H. Lundbeck A/S
    Inventors: Kim Jensen, Rikke Humble, Ken Liljegren, Troels Christensen
  • Publication number: 20050197388
    Abstract: The present invention discloses crystalline particles of escitalopram oxalate which either have a broad particle size distribution or comprise at least 0.01% (w/w) of Z-4-(4-dimethylamino-1-(4-fluorophenyl)-but-1-enyl)-3-hydroxymethyl-benzonitrile, said particles being suitable for use in direct compression. Furthermore, the invention discloses a novel pharmaceutical unit dosage form containing such crystalline particles of escitalopram oxalate as well as methods for manufacture of such crystalline particles of escitalopram oxalate Finally, the invention provides a method for reduction of the amount of hydroxyl containing impurities in a solution of citalopram or escitalopram.
    Type: Application
    Filed: September 23, 2004
    Publication date: September 8, 2005
    Applicant: H. Lundbeck A/S
    Inventors: Kim Jensen, Rikke Humble, Ken Liljegren, Troels Christensen
  • Patent number: 6916941
    Abstract: Crystalline particles of escitalopram oxalate with a particle size of at least 40 ?m is disclosed. Method for the manufacture of said crystalline particles and pharmaceutical compositions comprising said crystalline particles are also disclosed.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: July 12, 2005
    Assignee: H. Lundbeck A/S
    Inventors: Troels Volsgaard Christensen, Ken Liljegren, Michiel Onne Elema, Lene Andresen, Shashank Mahashabde, Sebastian P. Assenza
  • Publication number: 20050147674
    Abstract: Crystalline particles of escitalopram oxalate with a particle size of at least 40 ?m is disclosed. Method for the manufacture of said crystalline particles and pharmaceutical compositions comprising said crystalline particles are also disclosed.
    Type: Application
    Filed: February 7, 2005
    Publication date: July 7, 2005
    Inventors: Troels Christensen, Ken Liljegren, Michiel Elema, Lene Andresen, Shashank Mahashabde, Sebastian Assenza
  • Publication number: 20050053652
    Abstract: A solid unit dosage form comprising citalopram, which is prepared by direct compression of a mixture of citalopram base or a pharmaceutically acceptable salt thereof and pharmaceutically acceptable excipients, or by filling of said mixture in a hard gelatine capsule. Large crystals of a pharmaceutical acceptable salt of citalopram and method for the manufacture of said large crystals.
    Type: Application
    Filed: October 15, 2004
    Publication date: March 10, 2005
    Applicant: H. Lundbeck A/S
    Inventors: Ken Liljegren, Per Holm, Ole Nielsen, Sven Wagner
  • Patent number: 6849659
    Abstract: A solid unit dosage form comprising citalopram, which is prepared by direct compression of a mixture of citalopram base or a pharmaceutically acceptable salt thereof and pharmaceutically acceptable excipients, or by filling of said mixture in a hard gelatine capsule. Large crystals of a pharmaceutical acceptable salt of citalopram and method for the manufacture of said large crystals.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: February 1, 2005
    Assignee: H. Lundbeck A/S
    Inventors: Ken Liljegren, Per Holm, Ole Nielsen, Sven Wagner
  • Publication number: 20040058989
    Abstract: A solid unit dosage form comprising citalopram which is prepared by a process comprising a step wherein citalopram base or a pharmaceutically acceptable salt thereof and optionally pharmaceutically acceptable excipients is roller compacted.
    Type: Application
    Filed: July 1, 2003
    Publication date: March 25, 2004
    Applicant: H. Lundbeck A/S
    Inventors: Ken Liljegren, Per Holm
  • Publication number: 20030232881
    Abstract: The invention is directed to methods of crystallizing pharmaceutically acceptable salts of citalopram, the resulting crystals, and pharmaceutical compositions comprising the crystals.
    Type: Application
    Filed: December 5, 2002
    Publication date: December 18, 2003
    Applicant: H. LUNDBECK A/S
    Inventors: Ken Liljegren, Per Holm, Ole Nielsen, Sven Wagner
  • Patent number: D842452
    Type: Grant
    Filed: July 22, 2017
    Date of Patent: March 5, 2019
    Assignee: H. Lundbeck A/S
    Inventors: Cara Dignum, Ken Liljegren, Charlotte Miller