Patents by Inventor Stephen D. Copperwheat

Stephen D. Copperwheat 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).

  • Patent number: 6846759
    Abstract: A method of making a soft, well cushioned, fabric suitable for use in an automotive interior, furniture and upholstery. The fabric which is formed by depositing a coating of a high temperature adhesive having a viscosity of 6×104 to 75×104 centipoise at its application temperature on one surface of a felt cloth followed by laying down a layer of a second material on top of the adhesive-coated surface of the felt cloth to form a composite. The composite is then passed through a hot pinch point to firmly bond the second layer to the felt cloth.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: January 25, 2005
    Assignee: Knowlton Nonwovens, Inc.
    Inventor: Stephen D. Copperwheat
  • Patent number: 6770582
    Abstract: A composite laminate suitable for use in upholstery, automotive interiors and the like, which is made of a polyester felt substrate, an adhesive coating is contained on said felt substrate which obviates the need for a barrier layer for a vinyl laminate, with a vinyl film overlaying and bonding with said adhesive to said substrate. The method of making the laminate is also disclosed.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: August 3, 2004
    Assignee: Knowlton Nonwovens, Inc.
    Inventor: Stephen D. Copperwheat
  • Patent number: 6695148
    Abstract: A transmission fluid filter material and transmission filter produced therefrom comprising a gradient density composite felt which exhibits high particle removal efficiency at 40 micron diameter particle size and larger with exceptionally high dirt holding capacity and no significant increase in clean pressure drop. The upstream portion of the composite felt contains fine fibers that selectively remove first the fine particles while the downstream portion acts to sieve coarse particles and build a porous filter cake, thereby extending the useful life of the filter.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: February 24, 2004
    Inventors: Edward C. Homonoff, John A. Davis, Stephen D. Copperwheat, Richard W. Mayo, Franklin D. Cean
  • Publication number: 20030010710
    Abstract: A transmission fluid filter material and transmission filter produced therefrom comprising a gradient density composite felt which exhibits high particle removal efficiency at 40 micron diameter particle size and larger with exceptionally high dirt holding capacity and no significant increase in clean pressure drop. The upstream portion of the composite felt contains fine fibers that selectively remove first the fine particles while the downstream portion acts to sieve coarse particles and build a porous filter cake, thereby extending the useful life of the filter.
    Type: Application
    Filed: August 20, 2002
    Publication date: January 16, 2003
    Inventors: Edward C. Homonoff, John A. Davis, Stephen D. Copperwheat, Richard W. Mayo, Franklin D. Cean
  • Patent number: 6008149
    Abstract: An article which includes a layer of formable fabric of the type which when subjected to molding under heat and/or pressure possesses a high degree of stiffness. A layer of variable compression fabric capable of assuming variable thickness when subjected to molding under heat and/or pressure being bonded to the surface of the variable compression fabric, with said layers are made of the same thermoformable polymeric chemical substance.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: December 28, 1999
    Assignee: Knowlton Nonwovens, Inc.
    Inventor: Stephen D. Copperwheat