Patents by Inventor Mark L. Grizzle

Mark L. Grizzle 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 manufacturing a floor covering having a foamed backing formed from recycled polymeric material
    Patent number: 6860953
    Abstract: The present invention provides a cushioned floor covering having a backing material formed from waste polymeric material and a blowing agent wherein the blowing agent may be activated either before or after the backing material is adhered to the floor covering. The waste polymeric material includes from about 0 to 40 percent aliphatic polyamide material and is granulated, densified and extruded at a temperature that does not exceed the temperature at which the blowing agent would be activated.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: March 1, 2005
    Assignee: Collins & Aikman Floorcoverings, Inc.
    Inventors: Mark L. Grizzle, Lynn E. Preston, Wallace J. Hammel, Brian S. Randall, Paul D. Evans, Jr.
  • Process of recycling waste polymeric material and an article utilizing the same
    Publication number: 20010016244
    Abstract: The present invention provides for an article of manufacture, such as a floor covering, formed by an improved process for recycling waste polymeric material comprising a mixture of waste polymeric material wherein the waste polymeric material includes from about 0 to 40 percent aliphatic polyamide material; granulating and densifying the chopped mixture into fragments smaller than the original size of the waste polymeric material; and extruding the ground mixture at a temperature that does not exceed the temperature at which the largest portion of polymer based material decomposes.
    Type: Application
    Filed: February 27, 2001
    Publication date: August 23, 2001
    Inventors: Lynn E. Preston, Mark L. Grizzle, Stephen A. Zegler, Paul L. Weinle
  • Process of recycling waste polymeric material and an article utilizing the same
    Publication number: 20010009710
    Abstract: The present invention provides for an article of manufacture, such as a floor covering, formed by an improved process for recycling waste polymeric material comprising a mixture of waste polymeric material wherein the waste polymeric material includes from about 0 to 40 percent aliphatic polyamide material; granulating and densifying the chopped mixture into fragments smaller than the original size of the waste polymeric material; and extruding the ground mixture at a temperature that does not exceed the temperature at which the largest portion of polymer based material decomposes.
    Type: Application
    Filed: February 8, 2001
    Publication date: July 26, 2001
    Inventors: Stephen A. Zegler, Paul L. Weinle, Mark L. Grizzle, Lynn E. Preston
  • Process of recycling waste polymeric material and an article utilizing the same
    Patent number: 5914353
    Abstract: The present invention provides for an improved process for recycling waste polymeric material comprising a mixture of waste polymeric material wherein the waste polymeric material includes from about 0 to 40 percent aliphatic polyamide material; granulating and densifying the chopped mixture into fragments at least about 100 times smaller than the size of the waste polymeric material; and extruding the ground mixture at a temperature that does not exceed the temperature at which the largest portion of polymer based material decomposes.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: June 22, 1999
    Assignee: Collins & Aikman Floorcoverings, Inc.
    Inventors: Mark L. Grizzle, Lynn E. Preston, Stephen A. Zegler, Paul L. Weinle