Patents by Inventor Charles F. Shafer

Charles F. Shafer 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).

  • Nonwoven fabrics containing yarns with varying filament characteristics
    Patent number: 7174612
    Abstract: The subject invention provides non-woven fabrics having yarns of varying characteristics. In a preferred embodiment the subject invention provides nonwoven fabrics that comprise yarns of different deniers or cross sections. The use of these yarns gives the nonwoven fabric a unique appearance and advantageous properties. The subject invention further pertains to the processes used to produce these fabrics.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: February 13, 2007
    Assignee: Cerex Advanced Fabrics, Inc.
    Inventors: Albert E. Ortega, R. Wayne Thomley, Jan Mackey, Charles F. Shafer
  • Nonwoven fabrics containing yarns with varying filament characteristics
    Patent number: 7175902
    Abstract: The subject invention provides non-woven fabrics having yarns of varying characteristics. In a preferred embodiment the subject invention provides nonwoven fabrics that comprise yarns of different deniers or cross sections. The use of these yarns gives the nonwoven fabric a unique appearance and advantageous properties. The subject invention further pertains to the processes used to produce these fabrics.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: February 13, 2007
    Assignee: Cerex Advanced Fabrics, Inc.
    Inventors: Albert E. Ortega, R. Wayne Thomley, Jan Mackey, Charles F. Shafer
  • Nonwoven fabrics containing yarns with varying filament characteristics
    Publication number: 20040221436
    Abstract: The subject invention provides non-woven fabrics having yarns of varying characteristics. In a preferred embodiment the subject invention provides nonwoven fabrics that comprise yarns of different deniers or cross sections. The use of these yarns gives the nonwoven fabric a unique appearance and advantageous properties. The subject invention further pertains to the processes used to produce these fabrics.
    Type: Application
    Filed: June 9, 2004
    Publication date: November 11, 2004
    Inventors: Albert E. Ortega, R. Wayne Thomley, Jan Mackey, Charles F. Shafer
  • Nonwoven fabrics containing yarns with varying filament characteristics
    Publication number: 20030096549
    Abstract: The subject invention provides non-woven fabrics having yarns of varying characteristics. In a preferred embodiment the subject invention provides nonwoven fabrics that comprise yarns of different deniers or cross sections. The use of these yarns gives the nonwoven fabric a unique appearance and advantageous properties. The subject invention further pertains to the processes used to produce these fabrics.
    Type: Application
    Filed: October 18, 2002
    Publication date: May 22, 2003
    Inventors: Albert E. Ortega, R. Wayne Thomley, Jan Mackey, Charles F. Shafer
  • Spunbonded nonwoven nylon fabrics
    Patent number: 5431986
    Abstract: Spunbonded nonwoven nylon fabrics are formed from a blend of nylon 6 and nylon 6,6 polymers. A blend or copolymer of 0.1 to 10 percent by weight of nylon 6, balance nylon 6,6 is extruded into continuous filaments, pneumatically attenuated and drawn, and deposited onto a collection surface forming a web. The web is bonded either chemically or thermally. The fabric exhibits improved filament bonding. The addition of nylon 6 also improves the spinning performance of a nylon 6,6 spunbonded nonwoven process.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: July 11, 1995
    Assignee: Cerex Advanced Fabrics, L. P.
    Inventors: Albert E. Ortega, J. Don Edgar, R. Wayne Thomley, Robert A. Butler, Charles F. Shafer, William T. Gill