Patents by Inventor Franz Schwarzenbach

Franz Schwarzenbach 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: 20100252820
    Abstract: Electroneutral metal complexes of the formula L Cu A, wherein L stands for an, especially bidentate, neutral ligand and A stands for an, especially bidentate, monoanionic ligand binding to Cu by at least one heteroatom selected from N, P, S; or wherein the ligands L and A with the above features are interconnected by at least one chemical bond to form one common tetradentate ligand; or protonated or alkylated forms or salts thereof show good light emitting efficiency in electroluminescent applications.
    Type: Application
    Filed: June 13, 2008
    Publication date: October 7, 2010
    Applicant: CIBA CORPORATION
    Inventors: Luisa De Cola, Yinghui Sun, Franz Schwarzenbach, Roger Pretot
  • Patent number: 7442838
    Abstract: Sertraline hydrochloride polymorphic form II is conveniently prepared by adding hydrogen chloride to solution of sertraline free amine in a ketone. In preferred processes, the solution of sertraline free amine seeded with some crystals of polymorphic form II and/or the solution is heated before addition of the hydrogen chloride.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: October 28, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Paul Adriaan Van Der Schaaf, Franz Schwarzenbach, Hans Jürg Kirner, Martin Szelagiewicz, Claudia Marcolli, Andreas Burkhard
  • Patent number: 7402675
    Abstract: An amine ether of formula A wherein a is 1 or 2; and when a is 1, E is E?; when a is 2, E is L; E? is C1-C36 alkyl; C3-C18 alkenyl; C2-C18 alkinyl; C5-C18 cycloalkyl; C5-C18 cycloalkenyl; a radical of a saturated or unsaturated aliphatic bicyclic or tricyclic hydrocarbon of 7 to 12 carbon atoms; C2-C7alkyl or C3-C7alkenyl substituted by halogen; C7-C15 aralkyl or C7-C15 aralkyl substituted by C1-C4 alkyl or phenyl; or E? is a radical of formula (VII) as explained in claim 1; T? is tertiary C4-C18alkyl or phenyl, each of which are unsubstituted or substituted by halogen, OH, COOR21 or C(O)—R22; or T? is C5-C12cycloalkyl; C5-C12cycloalkyl which is interrupted by at least one O or —NR18—; a polycyclic alkyl radical having 7-18 carbon atoms, or the same radical which is interrupted by at least one O or —NR18—; or T? is —C(G1)(G2)-T?; or C1-C18alkyl or C5-C12cycloalkyl substituted by T? is hydrogen, halogen, NO2, cyano, or is a monovalent organic radical comprising 1-50 carbon atoms; or T? and T?
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: July 22, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Andreas Hafner, Hans Jürg Kirner, Franz Schwarzenbach, Paul Adriaan Van Der Schaaf, Peter Nesvadba
  • Publication number: 20050197404
    Abstract: Sertraline hydrochloride polymorphic form II is conveniently prepared by adding hydrogen chloride to solution of sertraline free amine in a ketone. In preferred processes, the solution of sertraline free amine seeded with some crystals of polymorphic form II and/or the solution is heated before addition of the hydrogen chloride.
    Type: Application
    Filed: April 8, 2005
    Publication date: September 8, 2005
    Inventors: Paul Van Der Schaaf, Franz Schwarzenbach, Hans Kirner, Martin Szelagiewicz, Claudia Marcolli, Andreas Burkhard
  • Patent number: 6939992
    Abstract: A crystalline form of sertraline hydrochloride was found, referred to hereinafter as polymorphic form CSC2 having a dissolution rate which surprisingly will increase rate of absorption of a drug. Furthermore, different crystalline forms of sertraline hydrochloride alcohol solvates, crystalline forms of sertraline hydrochloride hydrates, referred to hereinafter as polymorphic form CSC1, a process for the preparation of the amorphous form of sertraline hydrochloride, and different processes for the preparation of polymorphic forms I, II, V, and T1 are disclosed.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: September 6, 2005
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Paul Adriaan Van Der Schaaf, Franz Schwarzenbach, Hans-Jörg Kirner, Martin Szelagiewicz, Claudia Marcolli, Andreas Burkhard
  • Publication number: 20050119351
    Abstract: An improved process for the preparation of sertraline hydrochloride polymorphic form II is described, which process comprises seeding a solution of sertraline free amine in a ketone with some crystals of polymorphic form II and addition of hydrogen chloride, and wherein the solution is heated before addition of the hydrogen chloride. According to the present process, the metastable form II may be obtained in a reliable way with good yield and high purity with respect to other polymorphic forms as well as preparative residues such as educts or solvents.
    Type: Application
    Filed: September 21, 2004
    Publication date: June 2, 2005
    Inventors: Paul Van Der Schaaf, Franz Schwarzenbach, Hans-Jorg Kirner, Martin Szelagiewicz, Claudia Marcolli, Andreas Burkhard
  • Patent number: 6900328
    Abstract: An amine ether of formula (A) wherein a is 1 or 2; and when a is 1, E is E?; when a is 2, E is L; E? is C1-C36 alkyl; C3-C18 alkenyl; C2-C18 alkinyl; C5-C18 cycloalkyl; C5-C18 cycloalkenyl; a radical of a saturated or unsaturated aliphatic bicyclic or tricyclic hydrocarbon of 7 to 12 carbon atoms; C2-C7alkyl or C3-C7alkenyl substituted by halogen; C7-C15aralkyl or C7-C15 aralkyl substituted by C1-C4 alkyl or phenyl; or E? is a radical of formula (VII) as explained in claim 1; T? is tertiary C4-C18alkyl or phenyl, each of which are unsubstituted or substituted by halogen, OH, COOR21 or C(O)—R22; or T? is C5-C12cycloalkyl; C5-C12cacloalkyl which is interrupted by at least one O or —NR18—; a polycyclic alkyl radical having 7-18 carbon atoms, or the same radical which is interrupted by at least one O or —NR18—; or T? is —C(G1)(G2)—T?; or C1-C18alkyl or C5-C12cycloalkyl substituted by F(I)T? is hydrogen, halogen, NO2, cyano, or is a monovalent organic radical comprising 1-50 carbon atoms; or T? and T? together for
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: May 31, 2005
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Andreas Hafner, Hans Jürg Kirner, Franz Schwarzenbach, Paul Adriaan Van Der Schaaf, Peter Nesvadba
  • Patent number: 6872853
    Abstract: A cystalline form of sertraline hydrochloride was found, referred to hereinafter as polymorphic form CSC2 having a dissolution rate which surprisingly will increase rate of absorption of a drug. Furthermore, different crystalline forms of sertraline hydrochloride alcohol solvates, crystalline forms of sertraline hydrochloride hydrates, referred to hereinafter as polymorphic form CSC1, a process for the preparation of the amorphous form of sertraline hydrochloride, and different processes for the preparation of polymorphic forms I, II, V, and T1 are disclosed.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: March 29, 2005
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Paul Adriaan Van Der Schaaf, Franz Schwarzenbach, Hans-Jörg Kirner, Martin Szelagiewicz, Claudia Marcolli, Andreas Burkhard, Regine Peter
  • Publication number: 20050043552
    Abstract: An amine ether of formula A wherein a is 1 or 2; and when a is 1, E is E?; when a is 2, E is L; E? is C1-C36 alkyl; C3-C18 alkenyl; C2-C18 alkinyl; C5-C18 cydoalkyl; C5-C18 cycloalkenyl; a radical of a saturated or unsaturated aliphatic bicyclic or tricyclic hydrocarbon of 7 to 12 carbon atoms; C2-C7alkyl or C3-C7alkenyl substituted by halogen; C7-C15 aralkyl or C7-C15 aralkyl substituted by C1-C4 alkyl or phenyl; or E? is a radical of formula (VII) as explained in claim 1; T? is tertiary C4-C18alkyl or phenyl, each of which are unsubstituted or substituted by halogen, OH, COOR21 or C(O)—R22; or T? is C5-C12cycloalkyl; C5-C12 cycloalkyl which is interrupted by at least one O or —NR18—; a polycyclic alkyl radical having 7-18 carbon atoms, or the same radical which is interrupted by at least one O or —NR18—; or T? is —C(G1)(G2)—T?; or C1-C18alkyl or C5-C12cycloalkyl substituted by T? is hydrogen, halogen, NO2, cyano, or is a monovalent organic radical comprising 1-50 carbon atoms; or T? and T? toge
    Type: Application
    Filed: August 17, 2004
    Publication date: February 24, 2005
    Inventors: Andreas Hafner, Hans Kirner, Franz Schwarzenbach, Paul Van Der Schaaf, Peter Nesvadba
  • Publication number: 20040132828
    Abstract: A crystalline form of sertraline hydrochloride was found, referred to hereinafter as polymorphic form CSC2 having a dissolution rate which surprisingly will increase rate of absorption of a drug.
    Type: Application
    Filed: December 15, 2003
    Publication date: July 8, 2004
    Inventors: Paul Adriaan Van Der Schaaf, Franz Schwarzenbach, Hans-Jorg Kirner, Martin Szelagiewicz, Claudia Marcolli, Andreas Burkhard, Regine Peter
  • Publication number: 20030171461
    Abstract: An amine ether of formula (A) wherein a is 1 or 2; and when a is 1, E is E′; when a is 2, E is L; E′ is C1-C36 alkyl; C3-C18 alkenyl; C2-C18 alkinyl; C5-C18 cycloalkyl; C5-C18 cycloalkenyl; a radical of a saturated or unsaturated aliphatic bicyclic or bricyclic hydrocarbon of 7 to 12 carbon atoms; C2-C7alkyl or C3-C7alkenyl substituted by halogen; C7-C15aralkyl or C7-C15 aralkyl substituted by C1-C4 alkyl or phenyl; or E′ is a radical of formula (VII) as explained in claim 1; T′ is tertiary C4-C18alkyl or phenyl, each of which are unsubstituted or substituted by halogen, OH, COOR21 or C(O)—R22; or T′ is C5-C12cycloalkyl; C5-C12cacloalkyl which is interrupted by at least one O or —NR18—; a polycyclic alkyl radical having 7-18 carbon atoms, or the same radical which is interrupted by at least one O or —NR18—; or T′ is —C(G1)(G2)—T″; or C1-C18alkyl or C5-C12cycloalkyl substituted by F(I)T″ is hydrogen, halogen, NO2, cyano,
    Type: Application
    Filed: November 22, 2002
    Publication date: September 11, 2003
    Inventors: Andreas Hafner, Hans Jurg Kirner, Franz Schwarzenbach, Paul Adriaan Van Der Schaaf, Peter Nesvadba
  • Patent number: 5073476
    Abstract: Iron (II)-aromatic compound complexes mixed with electron acceptors as an oxidizing agent are suitable initiators for the polymerization by irradiation of organic material which can be polymerized by cations and/or free radicals. The composition composed of the polymerizable material and of the initiator mixture is suitable for the production of protective coatings and can be used as a photographic recording material.
    Type: Grant
    Filed: May 10, 1984
    Date of Patent: December 17, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Kurt Meier, Giuliano Eugster, Franz Schwarzenbach, Hans Zweifel