Patents by Inventor Ravi Prasad

Ravi Prasad 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).

  • Inkjet ink for use on polymeric substrate
    Patent number: 7465343
    Abstract: An ink for use in an inkjet printer and for printing on a polymeric substrate, comprises a swelling agent, selected and provided in sufficient amount to enable said colorant to enter the surface of the substrate, a colorant dispersed or dissolved in the swelling agent, and an inkjet-enabling additive. The swelling agent is selected and provided in sufficient amount to enable the colorant to enter the surface of the substrate.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: December 16, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ravi Prasad, Paul McClelland
  • Labeling with thermally conductive pads
    Patent number: 7462383
    Abstract: An optical disc includes an optical disc; a thermally conductive material disposed in a pattern of discrete pads on said disc; and a thermochromic material disposed over said pattern of thermally conductive material. A method of making an optical disc includes indenting a pattern onto an insulator; and depositing a thermally conductive material into indents of said pattern.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: December 9, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Mitchell A Abrams, Ravi Prasad
  • AUTO SELECTION OF CONNECTORS IN A MIDDLEWARE FRAMEWORK
    Publication number: 20080162644
    Abstract: The invention describes a method for auto selection of connectors in a middleware. The method includes receiving a message at a middleware, dynamically identifying if a connector for a target system is capable of handling the message and transmitting the message to a capable connector.
    Type: Application
    Filed: December 29, 2006
    Publication date: July 3, 2008
    Inventors: KALYANARAMAN B. KRISHNAN, Ravi Prasad
  • Labeling with thermally conductive pads
    Publication number: 20070154677
    Abstract: An optical disc includes an optical disc; a thermally conductive material disposed in a pattern of discrete pads on said disc; and a thermochromic material disposed over said pattern of thermally conductive material. A method of making an optical disc includes indenting a pattern onto an insulator; and depositing a thermally conductive material into indents of said pattern.
    Type: Application
    Filed: March 5, 2007
    Publication date: July 5, 2007
    Inventors: Mitchell Abrams, Ravi Prasad
  • Optically retro-reflecting sphere
    Patent number: 7224533
    Abstract: An optically retro-reflecting sphere includes an inner sphere and an outer concentric spherical shell, and can be coupled to a reflective surface. Light entering the optically retro-reflecting sphere from an incident direction is reflected by the sphere generally towards an exit direction, where the exit direction is parallel and opposite to the incident direction. The inner sphere and outer shell have different refractive indices, selected so that the reflected light is reflected with a non-uniform angular distribution about the exit direction.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: May 29, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Scott Lerner, Tim R. Koch, Ravi Prasad
  • Labeling with thermally conductive pads
    Patent number: 7212223
    Abstract: A method of labeling an object includes selectively applying focused energy to thermally conductive pads on the object to create a label on the object. The conductive pads are disposed adjacent to a thermochromic layer.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: May 1, 2007
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Mitchell A Abrams, Ravi Prasad
  • Method to form an interconnect
    Publication number: 20070037387
    Abstract: Embodiments of methods, apparatuses, devices, and/or systems for forming an interconnect are described.
    Type: Application
    Filed: October 12, 2006
    Publication date: February 15, 2007
    Inventors: Jian-Gang Weng, Ravi Prasad, Cary Addington, Peter Nyholm
  • Adjusting light intensity
    Publication number: 20060279477
    Abstract: In embodiments, an intensity of light is adjusted according to data indicating the states for elements.
    Type: Application
    Filed: June 10, 2005
    Publication date: December 14, 2006
    Inventors: William Allen, Ravi Prasad, Gregory May, John de Vos
  • FLEXIBLE BARRIER FILM STRUCTURE
    Publication number: 20060274142
    Abstract: A barrier film for separating liquid and air, including a liquid crystalline polymer layer having a glass transition temperature less than about 115° C., and having a thickness less than about 15 microns. The barrier film further including a heat-sealable layer, and an adhesive layer interposed between the liquid crystalline polymer layer and the heat sealable layer, forming the barrier film.
    Type: Application
    Filed: August 15, 2006
    Publication date: December 7, 2006
    Inventor: Ravi Prasad
  • Inkjet ink for use on polymeric substrate
    Publication number: 20060256176
    Abstract: An ink for use in an inkjet printer and for printing on a polymeric substrate, comprises a swelling agent, selected and provided in sufficient amount to enable said colorant to enter the surface of the substrate, a colorant dispersed or dissolved in the swelling agent, and an inkjet-enabling additive. The swelling agent is selected and provided in sufficient amount to enable the colorant to enter the surface of the substrate.
    Type: Application
    Filed: May 13, 2005
    Publication date: November 16, 2006
    Inventors: Ravi Prasad, Paul McClelland
  • Method to form an interconnect
    Patent number: 7135405
    Abstract: Embodiments of methods, apparatuses, devices, and/or systems for forming an interconnect are described.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: November 14, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jian-Gang Weng, Ravi Prasad, Cary G. Addington, Peter S. Nyholm
  • Flexible barrier film structure
    Patent number: 7132152
    Abstract: A barrier film for separating liquid and air, including a liquid crystalline polymer layer having a glass transition temperature less than about 115° C., and having a thickness less than about 15 microns. The barrier film further including a heat-sealable layer, and an adhesive layer interposed between the liquid crystalline polymer layer and the heat sealable layer, forming the barrier film.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: November 7, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Ravi Prasad
  • Process for producing coated polymeric articles and the articles produced thereby
    Patent number: 7118790
    Abstract: A method for producing a coated polymeric article by co-extruding polypropylene and a maleic anhydride modified polypropylene, corona-treating, and applying a polysilicate barrier is described. Also provided are films and bottles produced using this method.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: October 10, 2006
    Assignee: Hoechst Trespaphan
    Inventor: Ravi Prasad
  • Oxygen separation method utilizing an oxygen transport membrane reactor
    Patent number: 7118612
    Abstract: A method of separating oxygen from an oxygen containing stream in which compressed and heated oxygen is introduced into cathode side of an oxygen transport membrane reactor. Oxygen is permeated from the cathode side to the anode side. Motive fluid that is introduced into an ejector draws an oxygen permeate containing stream from the anode side at a subatmospheric pressure to form an oxygen containing product stream. The motive fluid, which can be steam raised by combustion used in heating the reactor, can be separated from the oxygen containing product stream to form an oxygen product stream. The use of an ejector lowers the partial pressure of the oxygen at the anode side of the membrane reactor and therefore the degree to which the oxygen containing stream need be compressed.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: October 10, 2006
    Assignee: Praxair Technology, Inc.
    Inventors: Eric Hunter Shreiber, Bart Antonie van Hassel, Ravi Prasad
  • System and method for creating a color filter for a display panel
    Publication number: 20060199086
    Abstract: A system for generating a color filter for a display panel is provided. The system comprises a photoconductor drum, a first liquid toner cartridge configured to transfer first liquid toner to a first discharged portion of the photoconductor drum to form a first image on the photoconductor drum, a cylindrical intermediate transfer member configured to receive the image from the photoconductor drum, and an impression mechanism configured to drive a substrate along the cylindrical intermediate transfer member to cause the first image to be transferred to the substrate.
    Type: Application
    Filed: March 4, 2005
    Publication date: September 7, 2006
    Inventors: Philip Burkum, Ravi Prasad, Lawrence Plotkin
  • Regulator and method of regulating fuel flow to a fuel cell by adsorption
    Patent number: 7052788
    Abstract: A fuel cell flow regulator includes a fuel cell fuel flow path, the fuel flow path including a solid-state material for regulating a flow of fuel along the fuel flow path by adsorption.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: May 30, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Paul H. McClelland, Philip Harding, Ravi Prasad
  • Optically retro-reflecting sphere
    Publication number: 20060098272
    Abstract: An optically retro-reflecting sphere is disclosed which includes an inner sphere and an outer concentric spherical shell, and can be coupled to a reflective surface. Light entering the optically retro-reflecting sphere from an incident direction is reflected by the sphere generally towards an exit direction, where the exit direction is parallel and opposite to the incident direction. The inner sphere and outer shell have different refractive indices, selected so that the reflected light is reflected with a non-uniform angular distribution about the exit direction.
    Type: Application
    Filed: November 8, 2004
    Publication date: May 11, 2006
    Inventors: Scott Lerner, Tim Koch, Ravi Prasad
  • Screen
    Publication number: 20060061860
    Abstract: A screen has an active material, having at least one optical property responsive to an electric field, disposed between electrodes, and a controller coupled to at least one of the electrodes for controlling the electric field in response to a signal received by the controller.
    Type: Application
    Filed: September 21, 2004
    Publication date: March 23, 2006
    Inventors: John Devos, William Allen, Ravi Prasad, Gregory May
  • Method to form an interconnect
    Publication number: 20060030141
    Abstract: Embodiments of methods, apparatuses, devices, and/or systems for forming an interconnect are described.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 9, 2006
    Inventors: Jian-Gang Weng, Ravi Prasad, Cary Addington, Peter Nyholm
  • Co-catalyst proton exchange membrane fuel cell utilizing borohydride fuels
    Patent number: 6982128
    Abstract: Two co-catalysts selected from the transitional metals can be employed in proton exchange membrane fuel cells to catalyze a borohydride anolyte, such that diatomic hydrogen produced on the surface of a particle of a first catalyst is diffused to an adjacent surface of a particle of a second catalyst. At the second catalyst the diatomic hydrogen is catalyzed to produce hydrogen ions, which are employed as the mobile ion transported across the electrolyte concurrent with the generation of electrical current. The apparatus operates without the accumulation of hydrogen gas, except as adhered to the surface of the two catalysts.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: January 3, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Joseph W Tsang, Ravi Prasad