Patents by Inventor Stephen M. Liebowitz

Stephen M. Liebowitz 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).

  • Orally administrable solid ribavirin dosage forms and process for making them
    Patent number: 6337090
    Abstract: An orally administrable solid dosage form containing a compacted ribavirin composition having an advantageously high tap density of at least 0.6 g/mL as well as surprisingly rapid disintegration and dissolution rates and wherein the ribavirin is substantially free of polymorphic forms of ribavirin and a process for making such solid dosage forms are disclosed.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: January 8, 2002
    Assignee: Schering Corporation
    Inventors: Stephen M. Liebowitz, Elliot I. Stupak, Imtiaz A. Chaudry, Winston A. Vadino, Frank E. Bowen
  • Orally administrable solid dosage form
    Patent number: 6335032
    Abstract: An orally administrable solid dosage form containing a compacted ribavirin composition having an advantageously high tap density of at least 0.6 g/mL as well as surprisingly rapid disintegration and dissolution rates and wherein the ribavirin is substantially free of polymorphic forms of ribavirin is disclosed.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: January 1, 2002
    Assignee: Schering Corporation
    Inventors: Stephen M. Liebowitz, Elliot I. Stupak, Imtiaz A. Chaudry, Winston A. Vadino, Frank E. Bowen
  • Orally administrable solid dosage form
    Patent number: 6051252
    Abstract: An orally administrable solid dosage form containing a compacted ribavirin composition having an advantageously high tap density of at least 0.6 g/mL as well as surprisingly rapid disintegration and dissolution rates and wherein the ribavirin is subsantially free of polymorphic forms of ribavirin is disclosed.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: April 18, 2000
    Assignee: Schering Corporation
    Inventors: Stephen M. Liebowitz, Elliot I. Stupak, Imtiaz A. Chaudry, Winston A. Vadino, Frank E. Bowen
  • Process of making solid ribavirin dosage forms
    Patent number: 5916594
    Abstract: A process of making an orally administrable solid dosage form containing a compacted ribavirin composition having an advantageously high tap density of at least 0.6 g/mL as well as surprisingly rapid disintegration and dissolution rates and wherein the ribavirin is substantially free of polymorphic forms of ribavirin as determined is disclosed.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: June 29, 1999
    Assignee: Schering Corporation
    Inventors: Stephen M. Liebowitz, Elliot I. Stupak, Imtiaz A. Chaudry, Winston A. Vadino, Frank E. Bowen
  • Orally administrable solid dosage form
    Patent number: 5914128
    Abstract: An orally administrable solid dosage form containing a compacted ribavirin composition having an advantageously high tap density of at least 0.6 g/mL as well as surprisingly rapid disintegration and dissolution rates and wherein the ribavirin is substantially free of polymorphic forms of ribavirin is disclosed.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: June 22, 1999
    Assignee: Schering Corporation
    Inventors: Stephen M. Liebowitz, Elliot I. Stupak, Imtiaz A. Chaudry, Winston A. Vadino, Frank E. Bowen
  • Stable extended release oral dosage composition comprising loratadine and pseudoephedrine
    Patent number: 5314697
    Abstract: A film-coated extended release oral dosage composition containing the nasal decongestant pseudoephedrine sulfate in a unique polymer matrix core and a film-coating on such core containing the non-sedating antihistamine, loratadine, and use of the said composition for treating patients showing the signs and symptoms associated with upper respiratory diseases and nasal congestion are disclosed.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: May 24, 1994
    Assignee: Schering Corporation
    Inventors: Henry K. Kwan, Stephen M. Liebowitz
  • Sustained release dosage form
    Patent number: 4781919
    Abstract: Sustained release dosage forms are made of saponified starch-acrylonitrile graft copolymers and an active ingredient.
    Type: Grant
    Filed: November 14, 1987
    Date of Patent: November 1, 1988
    Assignee: Schering Corporation
    Inventor: Stephen M. Liebowitz