Patents by Inventor Edward C. Dingilian

Edward C. Dingilian 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).

  • N-halochitosans, their preparation and uses
    Patent number: 5204452
    Abstract: A process for inducing flocculation involving the mixing of an aqueous solution of a chitosan salt with a material to be flocculated (e.g., oil, algae, or the like) and then adding a halogenating agent (e.g., sodium hypochlorite) thus forming a N-halochitosan.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: April 20, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edward C. Dingilian, George E. Heinsohn