Patents by Inventor Charles Arthur Leonard

Charles Arthur Leonard 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: 4101662
    Abstract: 1,4-(3-)Disubstituted piperidines are disclosed which have useful antiemetic properties. The compounds have the general formula: ##STR1## wherein R is halogen, R.sup.1 is hydrogen and halogen, n is a positive integer from 2-4 and A is --C(O)-- and --CHOH--. The pharmaceutically acceptable acid addition salts of the basic compounds are particularly useful as antiemetics.
    Type: Grant
    Filed: May 3, 1973
    Date of Patent: July 18, 1978
    Assignee: A. H. Robins Company, Incorporated
    Inventors: John Wesley Ward, Charles Arthur Leonard
  • Patent number: 3966957
    Abstract: A method is disclosed for controlling emesis utilizing N-(1-substituted-3-pyrrolidinyl)benzamides and thiobenzamides of the formula: ##SPC1##Wherein R is cycloalkyl, phenyl and phenyllower-alkyl; R.sup.1 is hydrogen, lower alkyl of 1 to 8 carbon atoms and phenyl; R.sup.2 is halogen, lower-alkyl, lower-alkoxy, amino, nitro, monoalkylamino, dialkylamino, mercaptomethyl, acetamido, sulfamoyl, cyano, hydroxy, benzyloxy, and trifluoromethyl; X is oxygen and sulfur; n is an integer from zero to three inclusive and pharmaceutically acceptable acid addition salts thereof. The benzamide compounds wherein R is cyclohexyl and R.sup.1 is lower-alkyl are particularly effective as antiemetics and have minimal side effects.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: June 29, 1976
    Assignee: A. H. Robins Company, Incorporated
    Inventors: Albert Duncan Cale, Jr., Charles Arthur Leonard
  • Patent number: 3963745
    Abstract: A method is disclosed for controlling emesis utilizing N-(1-substituted-3-pyrrolidinyl)benzamides and thiobenzamides of the formula: ##SPC1##Wherein R is cycloalkyl, phenyl and phenyllower-alkyl; R.sup.1 is hydrogen, lower alkyl of 1 to 8 carbon atoms and phenyl; R.sup.2 is halogen, lower-alkyl, lower-alkoxy, amino, nitro, monoalkylamino, dialkylamino, mercaptomethyl, acetamido, sulfamoyl, cyano, hydroxy, benzyloxy, and trifluoromethyl; X is oxygen and sulfur; n is an integer from zero to three inclusive and pharmaceutically acceptable acid addition salts thereof. The benzamide compounds wherein R is cyclohexyl and R.sup.1 is lower-alkyl are particularly effective as antiemetics and have minimal side effects.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: June 15, 1976
    Assignee: A. H. Robins Company, Incorporated
    Inventors: Albert Duncan Cale, Jr., Charles Arthur Leonard