Patents by Inventor Lance Walter Lewis

Lance Walter Lewis 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).

  • Dry resin made from an emulsion polymerized thermoplastic latex
    Patent number: 5962614
    Abstract: A process for finishing latex to form a dry resin and the resulting product. The process includes coagulating a latex of a thermoplastic polymer at a temperature at or just above the agglomeration temperature of the resin, dewatering the resin slurry to form a resin cake, drying the resin cake using extrusion technology to form a resin melt and solidifying the resin melt to form the resin. Preferred processes of the invention also include finishing the resin, such as by pelletizing and/or grinding it. More preferred processes of the invention include collecting and neutralizing the aqueous liquid byproducts from the dewatering and drying steps of the process. One embodiment of the invention includes utilizing water to solidify the resin melt, pelletizing the resin and drying the pellets.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: October 5, 1999
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Gary Lee Burroway, Lance Walter Lewis, John Charles Ullemeyer, Robert Donald Mate
  • Process for finishing a resin from an emulsion polymerized latex
    Patent number: 5698666
    Abstract: A process for finishing latex to form a dry resin and the resulting product. The process includes coagulating a latex of a thermoplastic polymer at a temperature at or just above the agglomeration temperature of the resin, dewatering the resin slurry to form a resin cake, drying the resin cake using extrusion technology to form a resin melt and solidifying the resin melt to form the resin. Preferred processes of the invention also include finishing the resin, such as by pelletizing and/or grinding it. More preferred processes of the invention include collecting and neutralizing the aqueous liquid byproducts from the dewatering and drying steps of the process. One embodiment of the invention includes utilizing water to solidify the resin melt, pelletizing the resin and drying the pellets.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: December 16, 1997
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Gary Lee Burroway, Lance Walter Lewis, John Charles Ullemeyer, Robert Donald Mate