Patents by Inventor David Leys

David Leys 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 making trifunctional primary amine crosslinker
    Patent number: 4495366
    Abstract: An improved process for synthesizing a sterically unhindered trifunctional primary amine is provided. This process includes the steps of slowly adding a particular unsaturated diester to a solution of a certain diamine in an aromatic organic solvent, and recovering the desired compound. The trifunctional primary amine is useful as a crosslinking agent.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: January 22, 1985
    Assignee: American Cyanamid Company
    Inventors: David A. Ley, Herbert Burkhard