Patents by Inventor Steve Castles

Steve Castles 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: 6913338
    Abstract: A wet-wiping printhead cleaning system for inkjet printer incorporating a wiper for wiping the printhead including a treatment fluid applicator configured for placing treatment fluid onto at least one element of the printhead and wiper elements involved in wiping the printhead orifice plate surface, the treatment fluid being placed on said at least one element by direct contact of the applicator, subsequently the wiper wipes the printhead, the treatment being available to enhance cleaning effectiveness, the treatment fluid lubricating the wiper so as to lengthen wiper service life and enhance wiping performance, as well as acting to render unwanted accumulations on the printhead more removable by wiping.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: July 5, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: W. Wistar Rhoads, Eric Joseph Johnson, Steve Castle, Frank Drogo, John Ferraro, Paul E. Martinson, Eric Mattis
  • Patent number: 5905514
    Abstract: A wet-wiping printhead cleaning system for inkjet printer incorporating a wiper for wiping the printhead including a treatment fluid applicator configured for placing treatment fluid onto at least one element of the printhead and wiper elements involved in wiping the printhead orifice plate surface, the treatment fluid being placed on said at least one element by direct contact of the applicator, subsequently the wiper wipes the printhead, the treatment being available to enhance cleaning effectiveness, the treatment fluid lubricating the wiper so as to lengthen wiper service life and enhance wiping performance, as well as acting to render unwanted accumulations on the printhead more removable by wiping.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: May 18, 1999
    Assignee: Hewlett-Packard Company
    Inventors: W. Wistar Rhoads, Eric Joseph Johnson, Steve Castle, Frank Drogo, John Ferraro, Paul E. Martinson, Eric Mattis
  • Patent number: 5634718
    Abstract: A detector of X-ray and the like in which very good resolution of energy can be obtained. The device is based on two basic components. The first is the x-ray absorber in which an x-ray interacts with a film and converts its energy into heat. Because the absorber is operated at cryogenic temperatures, approximately the range of 0.01 Kelvin to 1 Kelvin, its heat capacity is small and causes a measurable temperature rise. The second component of the invention is a base layer of normal metal which absorbs the heat generated by the x-ray. The third component of the invention is the method to detect the temperature rise. This thermometer is based on a normal metal-insulator-superconductor tunnel junction, where part of the base layer is the normal metal. When the tunnel junction is electrically biased at a voltage slightly below the gap voltage of the superconductor, the electrical current that flows through the junction is sensitively dependent on the temperature of the normal metal.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: June 3, 1997
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventors: John Martinis, Michael Nahum, Steve Castles