Patents by Inventor Michael S. Bergren

Michael S. Bergren 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).

  • Pharmaceutical compositions for treatment of Parkinson's disease
    Publication number: 20040138200
    Abstract: A pharmaceutical composition comprising a salt, preferably a crystalline salt, of an organic acid of low water solubility and a compound of formula (I) is provided. The salts are useful in treating Parkinson's disease. Also provided are methods of treatment using the salts and methods of making crystalline forms of the salts.
    Type: Application
    Filed: October 2, 2003
    Publication date: July 15, 2004
    Inventors: Michael Hawley, Michael S. Bergren, Phillip R. Nixon, Gordon W. Halstead, Robert S. Chao, Tzu-chi R. Ju
  • Linezolid—crystal form II
    Patent number: 6559305
    Abstract: The invention is a novel crystal form (Form II) of a known compound, linezolid which is useful as an antibacterial agent.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: May 6, 2003
    Assignee: Pharmacia & Upjohn Company
    Inventor: Michael S. Bergren
  • Crystal forms of 1-[5-methanesulfonamidoindolyl-2-carbonyl]-4-[3-(1-methylethylamino)-2-pyridinyl]piperazine
    Patent number: 6452007
    Abstract: The present invention relates to two novel crystal forms of a known compound, 1-[5-Methanesulfonamidoindolyl-2-carbonyl]-4-[3-(1-methylethylamino)-2-pyridinyl] piperazine monomethanesulfonate salt, which are useful for treating humans who are HIV positive, which are identified by a powder X-ray diffraction spectrum known commonly as the “S” and “T” forms.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: September 17, 2002
  • Linezolid-crystal form II
    Patent number: 6444813
    Abstract: The invention is a process to produce a compound, linezolid which is useful as an antibacterial agent.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: September 3, 2002
    Assignee: Pharmacia & Upjohn Company
    Inventor: Michael S. Bergren
  • Linezolid-crystal form II
    Publication number: 20010051621
    Abstract: The invention is a novel crystal form (Form II) of a known compound, linezolid 1
    Type: Application
    Filed: January 29, 2001
    Publication date: December 13, 2001
    Inventor: Michael S. Bergren
  • Physically stable solid form of a fluoroquinolone
    Patent number: 5985893
    Abstract: Novel crystal forms of the fluoroquinolone, [S-(R*,S*)]-1-cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-7-[3-[1-(methylam ino)ethyl]-1-pyrrolidinyl]-4-oxo-3-quinolinecarboxylic acid are disclosed. The forms are characterized by one methanol solvate form, and three anhydrous polymorphic forms, of which, Form III exhibits greatest stability and decreased hygroscopicity.
    Type: Grant
    Filed: May 1, 1996
    Date of Patent: November 16, 1999
    Assignee: Pharmacia & Upjohn Company
    Inventors: Xuanqiang Yu, William C. Schinzer, Michael J. Dunn, Robert Shih-Liang Chao, Dale S. Aldrich, Azhwarsamy Jeganathan, Michael S. Bergren
  • Crystalline ceftiofur free acid
    Patent number: 5721359
    Abstract: Anhydrous and crystalline free acid form of the cephalosporin antiobiotic ceftiofur, processes for its manufacture, and pharmaceutical composition containing it are provided.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: February 24, 1998