Patents by Inventor Timothy M. Pulling

Timothy M. Pulling 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).

  • Purge and rough cryopump regeneration process, cryopump and controller
    Patent number: 5862671
    Abstract: A cryopump is regenerated by roughing the cryopump during purging. Purging and roughing is carried out in first a high temperature mode and then a lower ambient temperature mode. In the lower temperature mode, the cryogenic refrigerator is turned on. If the system fails a rough test after roughing at the lower temperature, it is repurged with the rough valve open.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: January 26, 1999
    Assignee: Helix Technology Corporation
    Inventors: Philip A. Lessard, Paul E. Dresens, Maureen C. Buonpane, Timothy M. Pulling, Alan C. Brightman, Robert M. Patterson, Mark A. Stira, Allen J. Bartlett, Stephen J. Yamartino, Gary S. Ash, James A. O'Neil