Patents by Inventor Ronnie Jay Jones

Ronnie Jay Jones 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 polyesters containing low concentrations of diethylene glycol
    Patent number: 5856424
    Abstract: The present invention relates to a process for producing a high molecular weight polyester having less than about 0.5 weight % diethylene glycol comprising adding at least one carbonate compound to the ester exchange reaction product produced from reaction of a glycol component comprising ethylene glycol and an ester component comprising dimethylterephthalate, dimethylnaphthalenedicarboxylate and mixtures thereof wherein said reaction product is formed without a Ti catalyst.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: January 5, 1999
    Assignee: Eastman Chemical Company
    Inventors: David Taylor Bowers, Ronnie Jay Jones, Michael Duane Cliffton, Joseph Franklin Knight, Donna Rice Quillen