Patents by Inventor Kenneth D Saul

Kenneth D Saul 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).

  • Patent number: 7325896
    Abstract: The present invention includes as one embodiment a method of ejecting a fluid onto a print media. The method includes providing an ejection head having a nozzle that is coupled to a temperature sensor and a memory device. The method further includes measuring an uncalibrated temperature of the ejection head with the temperature sensor, recalling a correction value from the memory device, applying the correction value to the uncalibrated temperature to generate a calibrated temperature, and ejecting fluid from the nozzle onto the print media when the calibrated temperature is within a predefined temperature range.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: February 5, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Duane A. Koehler, Jefferson P. Ward, Huston W. Rice, Victorio A. Chavarria, Kenneth D. Saul
  • Patent number: 7004556
    Abstract: Several improvements have been made in inkjet print cartridges to realize 5 ng drop weights at ejection frequencies of 18 KHz. These improvements include small nozzle openings, improved heater resistor efficiency, and better ink supply reliability.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: February 28, 2006
    Assignee: Hewlett-Packard Development, L.P.
    Inventors: Todd A. Cleland, Robert C. Maze, Michael D. Miller, Rama Prasad, Robert N. K. Browning, Dale R. Oughton, Joseph M. Torgerson, Kenneth D. Saul, Michael B. Hager, Douglas M. Collins, Leslie A. Field, Storrs Hoen, Phillip W. Barth
  • Patent number: 6799822
    Abstract: A fluid ejection device includes a substrate, drop generators formed on the substrate at a high density, primitive select lines, and a ground line. The drop generators are arranged in primitives of drop generators. Each drop generator includes a heater resistor having a high resistance. Each primitive select line is separately electrically coupled to a corresponding one of the primitives and is configured to connect to a power source. The ground line is electrically coupled to all of the primitives.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: October 5, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Todd A. Cleland, Robert C. Maze, Michael D. Miller, Rama Prasad, Robert N. K. Browning, Dale R. Oughton, Joseph M. Torgerson, Kenneth D. Saul, Michael B. Hager, Douglas M. Collins, Leslie A. Field, Storrs Hoen, Phillip W. Barth
  • Publication number: 20030117462
    Abstract: Several improvements have been made in inkjet print cartridges to realize 5 ng drop weights at ejection frequencies of 18 KHz. These improvements include small nozzle openings, improved heater resistor efficiency, and better ink supply reliability.
    Type: Application
    Filed: October 7, 2002
    Publication date: June 26, 2003
    Inventors: Todd A. Cleland, Robert C. Maze, Michael D. Miller, Rama Prasad, Robert N.K. Browning, Dale R. Oughton, Joseph M. Torgerson, Kenneth D. Saul, Michael B. Hager, Douglas M. Collins, Leslie A. Field, Storrs T. Hoen, Phillip W. Barth
  • Patent number: 6491377
    Abstract: A high quality inkjet printhead includes a substrate having a multiplicity of heater resistors formed thereon at a density of at least six heater resistors per square millimeter. Each of the heater resistors also has a total resistance of at least 70 &OHgr; and an overlaying passivation thermal barrier characteristic adjusted to enable ejection of an ink drop of less than 6.5 ng with an energy impulse equal to or less than 1.4 &mgr;joules.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: December 10, 2002
    Assignee: Hewlett-Packard Company
    Inventors: Todd A. Cleland, Robert C. Maze, Michael D. Miller, Rama Prasad, Robert N. K. Browning, Dale R. Oughton, Joseph M. Torgerson, Kenneth D. Saul, Michael B. Hager, Douglas M. Collins, Leslie A. Field, Storrs T. Hoen, Phillip W. Barth
  • Patent number: 6431686
    Abstract: A fluid ejection device has a first set of primitives within a first region of a substrate of the device, and a second set of primitives within a second region of the substrate. The second set of primitives is electrically isolated from said first set of primitives. The number of primitives of said first set of primitives is different from the number of primitives of said second set of primitives.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: August 13, 2002
    Assignee: Hewlett-Packard Company
    Inventors: Kenneth D Saul, Joseph M. Torgerson, Angela W Bakkom, Mark H. MacKenzie
  • Publication number: 20010048451
    Abstract: In a thermal ink jet print head, individually-controlled heating elements are separated into groups of heating elements. Redundant control lines for the separate groups of heating elements increase the print head's reliability by reducing the likelihood that a print head will be completely disabled by an electrical fault on the control lines that in prior art devices extended to all of the heating elements.
    Type: Application
    Filed: July 23, 2001
    Publication date: December 6, 2001
    Inventors: Kenneth D. Saul, Joseph M. Torgerson, Angela W. Bakkom, Mark H. MacKenzie
  • Patent number: 6318846
    Abstract: In a thermal ink jet print head, individually-controlled heating elements are separated into groups of heating elements. Redundant control lines for the separate groups of heating elements increase the print head's reliability by reducing the likelihood that a print head will be completely disabled by an electrical fault on the control lines that in prior art devices extended to all of the heating elements.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: November 20, 2001
    Assignee: Hewlett-Packard Company
    Inventor: Kenneth D Saul
  • Patent number: 5425843
    Abstract: A multi-layer structure, typically semiconductor device, is etched according to a process of the present invention, and meets the above-described existing needs by focusing on the post-etch treatment of the damaged, etched semiconductor device formed thereby. This post-etch treatment is accomplished by exposing the damaged silicon to a forming-gas downstream plasma which results in substantially increased oxide regrowth and significantly higher level of gate oxide quality. In conducting the process of the subject invention from about 1% up to about 15% by volume of H.sub.2, and from about 85 up to about 99% by volume of N.sub.2 are preferably employed as the post etching forming-gas plasma.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: June 20, 1995
    Assignee: Hewlett-Packard Corporation
    Inventors: Kenneth D. Saul, Valerie A. Bach