Patents by Inventor David N. Bortz

David N. Bortz 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).

  • Composite friction materials having carbon nanotube and carbon nanofiber friction enhancers
    Patent number: 10400389
    Abstract: A textile-reinforced composite friction material is provided by the present invention that includes a nonwoven needlepunched fiber mat, a resin matrix impregnated within and onto the fiber mat, and a carbon nanomaterial dispersed within the resin matrix. The carbon nanomaterial is preferably carbon nanotubes and/or carbon nanofibers.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: September 3, 2019
    Assignees: BOARD OF TRUSTEES AT SOUTHERN ILLINOIS UNIVERSITY, TRIBCO INC.
    Inventors: Peter Filip, David N. Bortz, Brian Howells, Ashley R. Kelm, Tod Policandriotes
  • COMPOSITE FRICTION MATERIALS HAVING CARBON NANOTUBE AND CARBON NANOFIBER FRICTION ENHANCERS
    Publication number: 20160153137
    Abstract: A textile-reinforced composite friction material is provided by the present invention that includes a nonwoven needlepunched fiber mat, a resin matrix impregnated within and onto the fiber mat, and a carbon nanomaterial dispersed within the resin matrix. The carbon nanomaterial is preferably carbon nanotubes and/or carbon nanofibers.
    Type: Application
    Filed: June 18, 2014
    Publication date: June 2, 2016
    Applicant: TRIBCO INC.
    Inventors: Peter FILIP, David N. Bortz, Brian Howells, Ashley R. Kelm, Tod Policandriotes
  • COMPOSITE FRICTION MATERIALS
    Publication number: 20160138213
    Abstract: A textile-reinforced composite friction material is provided by the present invention that includes a nonwoven needlepunched fiber mat, a resin matrix impregnated within and onto the fiber mat, and an inorganic nanomaterial such as a carbide nanomaterial dispersed within the resin matrix. The carbide nanomaterial is preferably tungsten, silicon or titanium carbide nanomaterial.
    Type: Application
    Filed: September 15, 2015
    Publication date: May 19, 2016
    Inventors: David N. Bortz, Brian C. Howells, Erik M. Tobin
  • COMPOSITE FRICTION MATERIALS HAVING CARBON NANOTUBE AND CARBON NANOFIBER FRICTION ENHANCERS
    Publication number: 20150368856
    Abstract: A textile-reinforced composite friction material is provided by the present invention that includes a nonwoven needlepunched fiber mat, a resin matrix impregnated within and onto the fiber mat, and a carbon nanomaterial dispersed within the resin matrix. The carbon nanomaterial is preferably carbon nanotubes and/or carbon nanofibers.
    Type: Application
    Filed: June 18, 2014
    Publication date: December 24, 2015
    Applicant: TRIBCO INC.
    Inventors: Peter FILIP, David N. Bortz, Brian Howells, Ashley R. Kelm, Tod Policandriotes
  • Composite Friction Materials Having Carbon Nanotube and Carbon Nanofiber Friction Enhancers
    Publication number: 20080176470
    Abstract: A textile-reinforced composite friction material is provided by the present invention that includes a nonwoven needlepunched fiber mat, a resin matrix impregnated within and onto the fiber mat, and a carbon nanomaterial dispersed within the resin matrix. The carbon nanomaterial is preferably carbon nanotubes and/or carbon nanofibers.
    Type: Application
    Filed: October 11, 2006
    Publication date: July 24, 2008
    Inventors: Peter Filip, David N. Bortz, Brian Howells, Ashley R. King, Tod Policandriotes
  • Friction controlling devices and methods of their manufacture
    Patent number: 5989375
    Abstract: Wear resistant devices and methods of their manufacture in which the intended function or result of the devices is to influence operational coefficients of friction. The devices are made of fiber-reinforced polymer composite materials produced by nonwoven textile and plastics industries' materials and methods.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 23, 1999
    Inventor: David N. Bortz
  • Friction controlling devices and methods of their manufacture
    Patent number: 5646076
    Abstract: Wear resistant devices and methods of their manufacture in which the intended function or result of the devices is to influence operational coefficients of friction. The devices are made of fiber-reinforced polymer composite materials produced by nonwoven textile and plastics industries' materials and methods.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 8, 1997
    Inventor: David N. Bortz