Patents by Inventor Gary Fred Hawkins

Gary Fred Hawkins 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 producing methylene malonic esters
    Patent number: 4049698
    Abstract: A process comprisingA. reacting an ester of malonic acid having the formula ##STR1## with formaldehyde and a diene having the formula ##STR2## in the presence of an amine catalyst at about reflux temperature to form a compound having the formula ##STR3## wherein R.sup.1 and R .sup.2 are the same or different and each represents alkyl of 1 to about 10 carbon atoms, cyclohexyl or alkenyl of 2 to about 4 carbon atoms and each R.sup.3 is the same or different and represents hydrogen, methyl or ethyl.
    Type: Grant
    Filed: August 5, 1976
    Date of Patent: September 20, 1977
    Assignee: Eastman Kodak Company
    Inventors: Gary Fred Hawkins, Robert Lee Gass