Patents by Inventor Lewis C. Lappas

Lewis C. Lappas 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).

  • Crystalline forms of N-2-(6-methoxy)benzothiazolyl N'-phenyl urea
    Patent number: 4223153
    Abstract: Crystalline monohydrate (Form III) and anhydrate (Form IV) of N-2-(6-methoxy)benzothiazolyl-N'-phenylurea (frentizole) are stable, have a greater bulk density, are less electrostatic and more freely flowing than previous crystalline forms.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: September 16, 1980
    Assignee: Eli Lilly and Company
    Inventors: Lewis C. Lappas, Leslie J. Lorenz, James H. Wikel
  • 5-Bromo-5-nitro-2-alkylsubstituted-1,3-dioxane
    Patent number: 4025533
    Abstract: 5-Bromo-5-nitro-2-alkylsubstituted-1,3-dioxanes, such as 5-bromo-2-methyl-5-nitro-1,3-dioxane, novel antimicrobials with activity against both bacteria and fungi.
    Type: Grant
    Filed: April 14, 1976
    Date of Patent: May 24, 1977
    Assignee: Eli Lilly and Company
    Inventors: Lewis C. Lappas, Clarence A. Hirsch