Patents by Inventor George A. Chiarello

George A. Chiarello 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).

  • Process for the preparation of substituted and unsubstituted-2,3-pyridinedicarboxylates from chloromaleate or chlorofumurate or mixtures thereof
    Patent number: 5286868
    Abstract: There is provided a process for the preparation of dialkyl pyridinedicarboxylate compounds and derivatives thereof by reacting a dialkyl chloromaleate or chlorofumarate or a mixture thereof with an ammonium salt optionally in the presence of ammonia and an appropriately substituted .alpha.,.beta.-unsaturated aldehyde or ketone.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: February 15, 1994
    Assignee: American Cyanamid Company
    Inventors: Albert A. Cevasco, George A. Chiarello, William F. Rieker
  • Process for the preparation of dialkyl pyridine-2,3-dicarboxylate and derivatives thereof from dialkyl dichlorosuccinate
    Patent number: 5225560
    Abstract: There is provided a process for the preparation of substituted and unsubstituted-2,3-pyridinedicarboxylate compounds by reacting a dialkyl dichlorosuccinate with a dehydrohalogenating agent, an ammonia source and an appropriately substituted .alpha.,.beta.-unsaturated aldehyde or ketone.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: July 6, 1993
    Assignee: American Cyanamid Company
    Inventors: Albert A. Cevasco, George A. Chiarello, William F. Rieker
  • Process for the preparation of dialkyl pyridine-2,3-dicarboxylate and derivatives thereof from dialkyl dichlorosuccinate
    Patent number: 5124458
    Abstract: There is provided a process for the preparation of substituted and unsubstituted-2,3-pyridinedicarboxylate compounds by reacting a dialkyl dichlorosuccinate with a dehydrohalogenating agent, an ammonia source and an appropriately substituted .alpha.,.beta.-unsaturated aldehyde or ketone.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: June 23, 1992
    Assignee: American Cyanamid Company
    Inventors: Albert A. Cevasco, George A. Chiarello, William F. Rieker
  • Process for the preparation of substituted and unsubstituted-2,3-pyridinedicarboxylates from chloromaleate or chlorofumarate or mixtures thereof
    Patent number: 5118809
    Abstract: There is provided a process for the preparation of dialkyl pyridinedicarboxylate compounds and derivatives thereof by reacting a dialkyl chloromaleate or chlorofumarate or a mixture thereof with an ammonium salt optionally in the presence of ammonia and an appropiately substituted .alpha.,.beta.-unsaturated aldehyde or ketone.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: June 2, 1992
    Assignee: American Cyanamid Company
    Inventors: Albert A. Cevasco, George A. Chiarello, William F. Rieker
  • Method for the denitrosation of organic nitrosamines
    Patent number: 4134917
    Abstract: The invention relates to a method for the denitrosation of organic nitrosamines with aliphatic and cycloaliphatic ketones or aliphatic aldehyes in the presence of a strong acid, and optionally an inert organic solvent.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: January 16, 1979
    Assignee: American Cyanamid Company
    Inventors: Lawrence J. Ross, George A. Chiarello