Patents by Inventor Sean Donald

Sean Donald 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: 9981362
    Abstract: A method for leaching a PCD table for a cutter element includes (a) positioning a PCD table within a leaching chamber. The method also includes (b) submerging the PCD table in an acid within the leaching chamber. In addition, the method includes (c) sealing the leaching chamber. Further, the method includes (d) increasing the pressure within the leaching chamber to a pressure greater than or equal to 20,000 psi after (c).
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: May 29, 2018
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventors: Russell Gilleylen, Guodong Zhan, Sean Donald, Haresh Ghansyam, James R. Streater, Adondria M. Parker
  • Publication number: 20150367483
    Abstract: A method for leaching a PCD table for a cutter element includes (a) positioning a PCD table within a leaching chamber. The method also includes (b) submerging the PCD table in an acid within the leaching chamber. In addition, the method includes (c) sealing the leaching chamber. Further, the method includes (d) increasing the pressure within the leaching chamber to a pressure greater than or equal to 20,000 psi after (c).
    Type: Application
    Filed: December 30, 2013
    Publication date: December 24, 2015
    Applicant: National Oilwell Varco, L.P.
    Inventors: Russell Gilleylen, Guodong Zhan, Sean Donald, Haresh Ghansyam, James R. Streater, Adondria M. Parker
  • Patent number: 8985390
    Abstract: A composition dispensing apparatus which can deliver an repeatable and accurate unit dose of a composition including: a compressible container; a unit dose delivery system comprising an entry element, an exit element, side walls and a dosage chamber; a dispensing aperture; wherein the linear movement ratio of the exit element to the entry element is about 1 or less.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: March 24, 2015
    Assignee: The Procter & Gamble Company
    Inventors: Gene Michael Altonen, Sean Donald Riggenbach
  • Publication number: 20110089191
    Abstract: A composition dispensing apparatus which can deliver an repeatable and accurate unit dose of a composition comprising: a compressible container; a unit dose delivery system comprising an entry element, an exit element, side walls and a dosage chamber; a dispensing aperture; wherein the linear movement ratio of the exit element to the entry element is about 1 or less.
    Type: Application
    Filed: September 17, 2010
    Publication date: April 21, 2011
    Inventors: Gene Michael ALTONEN, Sean Donald Riggenbach
  • Patent number: 7559062
    Abstract: A method and apparatus are provided for scheduling tasks within a computing device such as a communication switch. When a task is to be scheduled, other tasks in the work queue are analyzed to see if any can be executed simultaneously with the task to be scheduled. If so, the two tasks are combined to form a combined task, and the combined task is placed within the job queue. In addition, if the computing device has insufficient resources to execute the task to be scheduled, the task is placed back into the work queue for future scheduling. This is done in a way which avoids immediate reselection of the task for scheduling. Task processing efficiency is increased, since combining tasks reduces the waiting time for lower priority tasks, and tasks for which there are insufficient resources are delayed only a short while before a new scheduling attempt, rather than rejecting the task altogether.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: July 7, 2009
    Assignee: Alcatel Lucent
    Inventors: Sean Donald Robert Code, Aaron Maxwell MacDonald