Patents by Inventor Stephen G. Rudisill

Stephen G. Rudisill 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: 20190240898
    Abstract: The present disclosure is drawn to material sets for 3-dimensional printing. The material set can include a thermoplastic polymer powder having an average particle size from 20 ?m to 200 ?m, a conductive fusing agent composition including a transition metal, and nonconductive fusing agent composition. The nonconductive fusing agent composition can include transition metal oxide bronze particles.
    Type: Application
    Filed: October 25, 2016
    Publication date: August 8, 2019
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Sterling Chaffins, Cassady Sparks Roop, Kevin P DeKam, Vladek Kasperchik, Ali Emamjomeh, Johnathon Holroyd, Stephen G Rudisill, Alexey S Kabalnov
  • Publication number: 20190054689
    Abstract: Disclosed herein is a three-dimensional printing method comprising: applying a build material; applying on, at least, a portion of the build material, a low tint fusing agent composition comprising metal oxide nanoparticles dispersed in a liquid vehicle; and exposing the build material to radiations to fuse the portion of the build material in contact with the low tint fusing agent composition in order to form a layer of a 3D object. Also disclosed herein is an article obtained according to the three-dimensional printing method described herein.
    Type: Application
    Filed: August 30, 2017
    Publication date: February 21, 2019
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Stephen G. RUDISILL, Alexey S. KABALNOV, Jacob WRIGHT, Hector Jose LEBRON
  • Publication number: 20190039296
    Abstract: The present disclosure is drawn to material sets and 3-dimensional printing systems that include a fusing agent. One example of a material set can include a fusing agent and a detailing agent. The fusing agent can include water, a carbon black pigment, and a water-soluble co-solvent in an amount from 20 wt % to 60 wt %. The detailing agent can include water and a black dye. In another example, a material set can include a fusing agent and a thermoplastic polymer powder.
    Type: Application
    Filed: April 28, 2016
    Publication date: February 7, 2019
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Keshava A. Prasad, Alexey S Kabalnov, Stephen G. Rudisill, Ali Emamjomeh, Michael Novick, Bernardo Gutierrez
  • Publication number: 20190030800
    Abstract: In an example of a three-dimensional (3D) printing method, a crystalline or semi-crystalline build material is applied. A temperature of the crystalline or semi-crystalline build material is maintained within 100° C. below a melting point of the crystalline or semi-crystalline build material. A melt flow property reduction agent is applied to at least a portion of the crystalline or semi-crystalline build material, and the at least the portion of the crystalline or semi-crystalline build material in contact with the melt flow property reduction agent melts or coalesces at the temperature.
    Type: Application
    Filed: May 12, 2016
    Publication date: January 31, 2019
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Stephen G. Rudisill, Alexey S Kabalnov, Kristopher J. Erickson, Howard S Tom, Lihua Zhao
  • Publication number: 20180333914
    Abstract: In an example of a three-dimensional printing method, a polymeric build material is applied. A fusing agent is selectively applied on at least a portion of the polymeric build material. The fusing agent includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and an aqueous vehicle. The polymeric build material is exposed to electromagnetic radiation to fuse the portion of the polymeric build material in contact with the fusing agent to form a layer.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 22, 2018
    Inventors: Stephen G. Rudisill, Vladek Kasperchik, Alexey S. Kabalnov, Shannon Reuben Woodruff, Thomas M. Sabo, Jake Wright, Hector Lebron, Vanessa Verzwyvelt, Morgan T. Schramm, Matthew A. Shepherd
  • Publication number: 20180272602
    Abstract: In a three-dimensional printing method example, a polymeric or polymeric composite build material is applied. A fusing agent is applied on at least a portion of the build material. The fusing agent includes an aqueous or non-aqueous vehicle and a plasmonic resonance absorber having absorption at wavelengths ranging from 800 nm to 4000 nm and having transparency at wavelengths ranging from 400 nm to 780 nm dispersed in the aqueous or non-aqueous vehicle. The build material is exposed to electromagnetic radiation, thereby fusing the portion of the build material in contact with the fusing agent to form a layer.
    Type: Application
    Filed: October 23, 2015
    Publication date: September 27, 2018
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Stephen G. Rudisill, Alexey S. Kabalnov, Keshava A. Prasad, Sivapackia Ganapathiappan, Jake Wright, Vladek Kasperchik
  • Patent number: 5453047
    Abstract: A coin sorter for sorting mixed coins by denomination. The apparatus comprises a rotatable disc which has a resilient surface for receiving coins and imparting rotational movement to the coins. A stationary sorting head has a contoured surface spaced slightly away from and generally parallel to the resilient surface of the rotatable disc. The stationary sorting head sorts and discharges coins of different denominations at different exits around the periphery of the stationary sorting head. The sorting head includes a separate exit channel for each denomination of coin, and a sensor for each coin denomination within the exit channel for that denomination. An encoder monitors the movement of a sensed coin on the rotating disc downstream of the sensors by monitoring the angular movement of the disc.
    Type: Grant
    Filed: September 28, 1993
    Date of Patent: September 26, 1995
    Assignee: Cummins-Allison Corp.
    Inventors: Richard A. Mazur, Joseph J. Geib, Gary Watts, John Gibbons, Rasmussen M. James, Stephen G. Rudisill
  • Patent number: 5299977
    Abstract: A coin sorter for sorting mixed coins by denomination. The apparatus comprises a rotatable disc which has a resilient surface for receiving coins and imparting rotational movement to the coins. A stationary sorting head has a contoured surface spaced slightly away from and generally parallel to the resilient surface of the rotatable disc. The stationary sorting head sorts and discharges coins of different denominations at different exits around the periphery of the stationary sorting head. The sorting head includes a separate exit channel for each denomination of coin, and a sensor for each coin denomination within the exit channel for that denomination. An encoder monitors the movement of a sensed coin on the rotating disc downstream of the sensors by monitoring the angular movement of the disc.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: April 5, 1994
    Assignee: Cummins-Allison Corp.
    Inventors: Richard A. Mazur, Joseph J. Geib, Gary Watts, John P. Gibbons, James M. Rasmussen, Stephen G. Rudisill
  • Patent number: 5277651
    Abstract: A coin sorting and counting system which comprises a rotatable disc having resilient surface for receiving mixed denomination coins and imparting rotational movement to the coins; a drive motor for rotating the disc; a stationary sorting head having a contoured surface spaced slightly away from and generally parallel to the resilient surface of the rotatable disc, the sorting head including an outwardly spiralling channel for queuing the coins on the disc into a single file of coins, and a guiding edge which engages selected edges of the coins in the single file and guides the coins along a prescribed path where the positions of the non-engaged edges of the coins are determined by the diameters of the respective coins; a counting station along the prescribed path for separately counting each coin denomination before the coins are sorted; and a sorting station spaced circumferentially from the counting station, in the direction of coin movement, for discriminating among coins of different denominations and sel
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: January 11, 1994
    Assignee: Cummins-Allison Corp.
    Inventors: James M. Rasmussen, Richard A. Mazur, Stephen G. Rudisill
  • Patent number: 5141443
    Abstract: A coin sorting and counting system which comprises a rotatable disc having a resilient surface for receiving mixed denomination coins and imparting rotational movement to the coins; means for rotating the disc; a stationary sorting head having a contoured surface spaced slightly away from and generally parallel to the resilient surface of said rotatable disc, the sorting head including a wall for queuing the coins on the disc into a single file of coins, and a guiding edge which engages selected edges of the coins in the single file and guides the coins along a prescribed path where the positions of the non-engaged edges of the coins are determined by the diameters of the respective coins; a counting station along the prescribed path for separately counting each coin denomination before the coins are sorted; and a sorting station spaced circumferentially from the counting station, in the direction of coin movement, for discriminating among coins of different denominations and selecting coins of different deno
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: August 25, 1992
    Assignee: Cummins-Allison Corp.
    Inventors: James M. Rasmussen, Richard A. Mazur, Stephen G. Rudisill