Patents by Inventor Richard A. Schnettler

Richard A. Schnettler 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).

  • 5-(4-Phenyl 1-piperidinyl)methyl-2,3-dihydro-2-oxo-1H-imidazole-4-carboxylic acid derivatives
    Patent number: 4329470
    Abstract: 2,3-Dihydro-2-oxo-1H-imidazole-4-carboxylic acid derivatives having a 5-(4-phenyl-1-piperidinyl)methyl substituent, are useful as cardiotonics, antihypertensives and antithrombotic agents. The compounds are obtained by the reaction of an appropriate amine with a substituted 5-bromomethyl-2,3-dihydro-2-oxo-1H-imidazole-4-carboxylic acid derivative.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: May 11, 1982
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: J. Martin Grisar, Richard A. Schnettler, Richard C. Dage
  • L-3-hydroxymethyltyrosine and salts thereof for lowering blood pressure
    Patent number: 4022910
    Abstract: L-3-Hydroxymethyltyrosine and pharmaceutically acceptable salts thereof useful in lowering blood pressure and compositions thereof.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: May 10, 1977
    Assignee: Richardson-Merrell Inc.
    Inventors: John T. Suh, Richard A. Schnettler