Patents by Inventor John Cavanaugh

John Cavanaugh 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).

  • Publication number: 20070281101
    Abstract: The present invention provides a process for making a filled fluoropolymer bearing comprising providing an aqueous fluoropolymer dispersion comprising fluoropolymer particles and anionic polyelectrolyte dispersing agent in an amount sufficient for stabilization. The dispersion contains less than about 300 ppm fluorosurfactant based on the weight of the dispersion. The dispersion is coagulated to make a mush and a bearing filler is added to the dispersion prior to or after making the mush. The mush containing bearing filler is applied onto a bearing substrate to produce a coated substrate which is sintered and formed into a bearing.
    Type: Application
    Filed: May 18, 2007
    Publication date: December 6, 2007
    Inventors: Robert John Cavanaugh, Clay Woodward Jones
  • Publication number: 20070282044
    Abstract: An aqueous fluoropolymer dispersion comprising fluoropolymer particles having an average particle size of about 10 to about 400 nm. The dispersion has a solids content of at least about 35 to about 70 wt % and comprises about 0.03 wt % to about 10 wt % anionic polyelectrolyte dispersing agent based on the weight of fluoropolymer solids. The dispersion has a Gel Time of at least about 100 seconds.
    Type: Application
    Filed: May 18, 2007
    Publication date: December 6, 2007
    Inventors: Robert John Cavanaugh, Clay Woodward Jones
  • Patent number: 7085227
    Abstract: A method for testing congestion avoidance on a network by simulating transmission control protocol (TCP) streams. In one embodiment, one hundred TCP streams are initiated, wherein each TCP stream is operable to transmit data packets. A TCP stream comprises a current window size and a maximum window size. For each TCP stream, an unacknowledged traffic stream is initiated and directly tied to a referencing TCP stream and is controlled (e.g. rate limited) by the referenced TCP stream. This permits the companion unacknowledged traffic streams to be efficiently transmitted at high rates. In the event of congestion resulting in the dropping of packets from the traffic streams, each traffic stream will back off at the same rate. In one embodiment, an oversubscription factor is used to ensure network congestion causing the associated flow to decrease. The present invention provides for a method of testing congestion avoidance of a high speed network requiring only one processor.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: August 1, 2006
    Assignee: Cisco Technology, Inc.
    Inventors: Roy Brooks, John Cavanaugh
  • Patent number: 6956078
    Abstract: An aqueous dispersion composition of about 30 to about 70 weight % non-melt-processible fluoropolymer particles having a standard specific gravity (SSG) of less than 2.225 and about 2 to about 11 weight % surfactant based on the weight of said fluoropolymer comprising a compound or mixture of compounds of the formula: R(OCH2CH2)nOH wherein R is a branched alkyl, branched alkenyl, cycloalkyl, or cycloalkenyl hydrocarbon group having 8-18 carbon atoms and n is an average value of 5 to 18. The fluoropolymer particles of the dispersion comprise a core of high molecular weight polytetrafluoroethylene and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene. Preferably, the aqueous dispersion composition comprises about 45 to about 65 weight % non-melt-processible fluoropolymer particles.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: October 18, 2005
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert John Cavanaugh, Clay Woodward Jones, Kazuo Konabe, Daniel N. Levy, Philippe Andre Fernand Thomas, Theodore A. Treat
  • Publication number: 20040203467
    Abstract: There are disclosed systems and methods for performing diagnostic testing on portable communication devices, such as cellular telephones. In one embodiment, diagnostic commands are generated internal to the communication device and processed within the device as though the test commands had been received from a remote location. The processed commands can be analyzed either within the portable device or remote therefrom. For remote processing, a wireless port is provided.
    Type: Application
    Filed: January 21, 2003
    Publication date: October 14, 2004
    Inventors: Jerry J. Liu, Thomas M. Snyder, John Cavanaugh
  • Publication number: 20030130393
    Abstract: An aqueous dispersion composition of about 30 to about 70 weight % non-melt-processible fluoropolymer particles having a standard specific gravity (SSG) of less than 2.
    Type: Application
    Filed: March 13, 2002
    Publication date: July 10, 2003
    Inventors: Robert John Cavanaugh, Clay Woodward Jones, Kazuo Konabe, Daniel N. Levy, Philippe Andre Fernand Thomas, Theodore A. Treat
  • Publication number: 20030008944
    Abstract: An aqueous dispersion of non-melt-processible fluoropolymer, process for making same and concentrated dispersion and powder obtained from the dispersion. The fluoropolymer particles of the dispersion have a standard specific gravity (SSG) of less than 2.225 and comprise a core of high molecular weight polytetrafluoroethylene and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene. At least about 1.5 weight % of the fluoropolymer particles comprise substantially rod-shaped particles having a length to diameter ratio greater than about 5.
    Type: Application
    Filed: March 13, 2002
    Publication date: January 9, 2003
    Inventors: Clay Woodward Jones, Robert John Cavanaugh, Walter Krakowiak, Richard A. Morgan, Theodore A. Treat
  • Patent number: 5939193
    Abstract: Provided is a transparent recording sheet useful in producing electrophotographic images for overhead projections. The recording sheet comprises a transparent polymeric base and an imaging layer. The imaging layer comprises at least one resin and at least one transparentizer in amounts sufficient to have the imaging layer exhibit a T.sub.g in the range of from about -15 to about 50.degree. C.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: August 17, 1999
    Assignee: Rexam Graphics Inc.
    Inventors: Boris J. Katsen, John P. McCue, John Cavanaugh
  • Patent number: 5690878
    Abstract: Perfluorinated cycloalkane solvents for dissolving high melting polymers containing tetrafluoroethylene, are disclosed. These solvents dissolve such polymers more rapidly, and/or are more stable, than previously known solvents. Also disclosed is a process for dissolution of the polymers and their resulting solutions. The solutions are useful for making polymer films, coatings and for encapsulating objects.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: November 25, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William Howard Tuminello, Robert John Cavanaugh
  • Patent number: 5683557
    Abstract: Perfluorinated cycloalkane solvents for dissolving high melting polymers containing tetrafluoroethylene, are disclosed. These solvents dissolve such polymers more rapidly, and/or are more stable, than previously known solvents. Also disclosed is a process for dissolution of the polymers and their resulting solutions. The solutions are useful for making polymer films, coatings and for encapsulating objects.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: November 4, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William Howard Tuminello, Robert John Cavanaugh
  • Patent number: 5652025
    Abstract: Perfluorinated cycloalkane solvents for dissolving high melting polymers containing tetrafluoroethylene, are disclosed. These solvents dissolve such polymers more rapidly, and/or are more stable, than previously known solvents. Also disclosed is a process for dissolution of the polymers and their resulting solutions. The solutions are useful for making polymer films, coatings and for encapsulating objects.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: July 29, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William Howard Tuminello, Robert John Cavanaugh
  • Patent number: 5399413
    Abstract: Provided is a composite material comprising a carrier, a conductive layer formed on the carrier, and a dielectric layer containing spacer particles formed on the conductive layer. The dielectric layer has an abrasion factor less than about 0.3 determined by a brass shim abrasion method, and a substantially uniform distribution of spacer particles substantially free of flat spots greater than about 100 microns in the x-y direction and 1500 square microns in area on any part of the surface. The spacer particles of the dielectric layer of the composite material preferably are amorphous silica. The composite material is useful in electrostatic imaging technology and provides images substantially free of defects, including artifacts or flares, dropouts and nib writing.Also provided is a process which permits the creation of very stable dispersions of solid particles in a dispersing medium useful for both the dielectric and conductive layers of the composite material of the invention.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: March 21, 1995
    Assignee: Rexham Graphics Inc.
    Inventors: Boris J. Katsen, Dene H. Taylor, Richard S. Himmelwright, Cynthia F. Klausner, Edward W. Sporbert, Barbara J. Stewart, John Cavanaugh, Eran Turi
  • Patent number: D525628
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: July 25, 2006
    Assignee: Verbatim Corporation
    Inventors: Timothy J. Clatterbuck, Heather Sazama, John Cavanaugh, Jack Burke
  • Patent number: D526652
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: August 15, 2006
    Assignee: Verbatim Corporation
    Inventors: Timothy J. Clatterbuck, Heather Sazama, John Cavanaugh, Jack Burke
  • Patent number: D527009
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: August 22, 2006
    Assignee: Verbatim Corporation
    Inventors: Timothy J. Clatterbuck, Heather Sazama, John Cavanaugh, Jack Burke