Patents by Inventor Leon N. Davis

Leon N. Davis 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).

  • Patent number: 5338742
    Abstract: 4-Aralkylpyridines, for example 4-[3-[4-[(1-methylethyl)oxy]phenyl]propyl]pyridine, are active against nematodes.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: August 16, 1994
    Assignee: DowElanco
    Inventors: Ronald E. Hackler, Glen P. Jourdan, Leon N. Davis
  • Patent number: 5240916
    Abstract: Substituted naphthyridines of the formula (1): ##STR1## wherein one of A, B, C, or D is N, and the others are CR.sup.1 ;R.sup.1 and R.sup.2 are independently H or halo.X, Y and Z are defined in the specification.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: August 31, 1993
    Assignee: DowElanco
    Inventors: Blake A. Caley, Michael J. Coghlan, Leon N. Davis, Barry A. Dreikorn