Patents by Inventor Steven C. Schumann

Steven C. Schumann 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).

  • Method of making modified-release metronidazole compositions
    Patent number: 5618559
    Abstract: Pharmaceutical compositions having a modified release profile for once daily dosing of metronidazole, methods for making the pharmaceutical compositions, and methods for treating a microbial infection with once daily dosing of the pharmaceutical compositions of the invention are provided. The compositions given once daily exhibit substantial bioequivalence to immediate release metronidazole given three times per day. The compositions of the invention comprise:(a) a first portion of metronidazole which is about 59 wt % to about 79 wt % metronidazole;(b) about 1.5 wt % to about 3.0 wt % of an aqueous insoluble poly(meth)acrylic acid ester copolymer which is aqueous permeable, aqueous expandable and pH-independent;(c) about 0.1 wt % to about 2.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: April 8, 1997
    Assignee: G.D. Searle & Co.
    Inventors: Subhash Desai, Alan M. Mancini, Steven C. Schumann
  • Pharmaceutical composition containing ibuprofen and a prostaglandin
    Patent number: 5213807
    Abstract: A pharmaceutical composition includes a core of an NSAID selected from ibuprofen and ibuprofen salts, which core is surrounded by an intermediate coating impermeable to the passage of ibuprofen and a mantle coating which includes a prostaglandin surrounding the coated ibuprofen core.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: May 25, 1993
    Inventors: Pramod B. Chemburkar, Bahram Farhadieh, Barbara J. Struthers, Tugrul T. Kararli, Steven C. Schumann