Patents by Inventor Gary G. Sweetapple

Gary G. Sweetapple 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).

  • Polymorphs of 3--(3?,3?-dimethylsuccinyl)betulinic acid di--methyl-D-glucamine
    Patent number: 7799768
    Abstract: The present invention relates to crystalline polymorphs of 3-O-(3?,3?-dimethylsuccinyl)betulinic acid di-N-methyl-D-glucamine salt (“DSB•2NMG)”), pharmaceutical compositions of the same and use of the same as an active pharmaceutical agent in the treatment of HIV related disorders.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: September 21, 2010
    Assignee: Myrexis, Inc.
    Inventors: Mike H. O'Neill, Gary G. Sweetapple, Randall M. Walker, Arndt Hausherr, Gunter Koch, David E. Martin
  • Method for making finely divided perfluorocarbon copolymer
    Patent number: 4540716
    Abstract: A method for making a quite finely divided particulate copolymeric perfluorocarbon having pendant cation exchange functional groups, and having an equivalent weight of at least in excess of 900 but not greater than about 1500. In the method, the perfluorocarbon copolymer is solvated in a solvent and then precipitated from solution by addition of a substance miscible in the solvent but having essentially no capability for solvating the perfluorocarbon copolymer. The method is conducted at a temperature generally below about 300.degree. C.
    Type: Grant
    Filed: January 13, 1983
    Date of Patent: September 10, 1985
    Assignee: Diamond Shamrock Chemicals Company
    Inventors: Michael J. Covitch, Gary G. Sweetapple