Patents by Inventor Robert G. Clifton, Jr.

Robert G. Clifton, Jr. 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).

  • Processes for preparing bis-naphthalimides containing amino-acid derived linkers
    Patent number: 5461176
    Abstract: This invention relates to bis-naphthalimides, including 2,2'-[1,2-ethanediylbis[imino(1-methyl-2,1-ethanediyl)]]-bis[5-nitro-1H-be nz[de]isoquinoline-1,3(2H)-dione] and 2,2'-[1,2-ethanediylbis[imino(2-methyl-2,1-ethanediyl)]]-bis[5-nitro-1H-be nz[de]isoquinoline-1,3(2H)-dione], processes for their preparation, pharmaceutical compositions containing them, and methods of using them to treat cancer in mammals.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: October 24, 1995
    Assignee: The Du Pont Merck Pharmaceutical Company
    Inventors: Jung-Hui Sun, Jose R. Matos, Chung-Ho Park, Robert G. Clifton, Jr.