Patents by Inventor Edward Cooper Ballard

Edward Cooper Ballard 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).

  • Reduced melt index, low gel content ethylene copolymers and process for preparation thereof
    Patent number: 3988509
    Abstract: Continuous process for the production of reduced melt index, low gel content ethylene copolymers comprising the in-line addition of a solution of a free radical initiator into the polymer stream under turbulent conditions after most but not all of the unreacted monomers have been removed. The reduced melt index, low gel content ethylene copolymers prepared by the above process are particularly useful in coating compositions for paper, paperboard or corrugated board.
    Type: Grant
    Filed: April 10, 1975
    Date of Patent: October 26, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edward Cooper Ballard, John Ricks Priest
  • Tufted carpet having a polyolefin film as the secondary backing
    Patent number: 3940525
    Abstract: Improved process for preparing ethylene/vinyl acetate copolymer based hot-melt adhesive backsized tufted carpet wherein polyethylene, polypropylene or ethylene/vinyl acetate copolymer film is used as the secondary backing. Such carpets have unexpectedly and significantly improved tuft pull strength.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: February 24, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward Cooper Ballard