Patents by Inventor Radim Scigel

Radim Scigel 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).

  • Process for resolution of tamsulosin and compounds, compositions, and processes associated therewith
    Patent number: 6965051
    Abstract: Optically impure tamsulosin including racemic tamsulosin can be resolved into optically pure (R)- or (S)-tamsulosin by the use of diastereomeric sulfonate salts of tamsulosin in a fractional crystallization technique. Racemic tamsulosin free base is a useful starting material for the resolution process and a method of obtaining the same in solid form, including two crystalline polymorphic forms, is also provided.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: November 15, 2005
    Assignee: Synthon IP Inc.
    Inventors: Hans J. Hoorn, Theodorus H. A. Peters, Jaroslav Pis, Radim Scigel
  • Process for resolution of tamsulosin and compounds, compositions, and processes associated therewith
    Publication number: 20050096394
    Abstract: Optically impure tamsulosin including racemic tamsulosin can be resolved into optically pure (R)— or (S)-tamsulosin by the use of diastereomeric sulfonate salts of tamsulosin in a fractional crystallization technique. Racemic tamsulosin free base is a useful starting material for the resolution process and a method of obtaining the same in solid form, including two crystalline polymorphic forms, is also provided.
    Type: Application
    Filed: November 15, 2004
    Publication date: May 5, 2005
    Inventors: Hans Hoorn, Theodorus Peters, Jaroslav Pis, Radim Scigel
  • Process for resolution of tamsulosin and compounds, compositions, and processes associated therewith
    Patent number: 6835853
    Abstract: Optically impure tamsulosin including racemic tamsulosin can be resolved into optically pure (R)- or (S)-tamsulosin by the use of diastereomeric sulfonate salts of tamsulosin in a fractional crystallization technique. Racemic tamsulosin free base is a useful starting material for the resolution process and a method of obtaining the same in solid form, including two crystalline polymorphic forms, is also provided.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: December 28, 2004
    Assignee: Synthon BV
    Inventors: Hans J Hoorn, Theodorus H. A. Peters, Jaroslav Pis, Radim Scigel
  • Process for resolution of tamsulosin and compounds, compositons, and processes associated therewith
    Publication number: 20030109752
    Abstract: Optically impure tamsulosin including racemic tamsulosin can be resolved into optically pure (R)- or (S)-tamsulosin by the use of diastereomeric sulfonate salts of tamsulosin in a fractional crystallization technique. Racemic tamsulosin free base is a useful starting material for the resolution process and a method of obtaining the same in solid form, including two crystalline polymorphic forms, is also provided.
    Type: Application
    Filed: July 31, 2002
    Publication date: June 12, 2003
    Inventors: Hans J. Hoorn, Theodorus H.A. Peters, Jaroslav Pis, Radim Scigel