Patents by Inventor William Sperry

William Sperry 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: 20070087136
    Abstract: A composition includes an alkenyl succinic anhydride sizing agent or an alkyl ketene dimer sizing agent. The alkenyl succinic anhydride sizing agent is present in an amount ranging from about 1.0 pounds per ton to about 4.0 pounds per ton. The alkyl ketene dimer sizing agent is present in an amount ranging from about 2.0 pounds per ton to about 10.0 pounds per ton. A metallic salt is also incorporated in the composition.
    Type: Application
    Filed: October 14, 2005
    Publication date: April 19, 2007
    Inventors: John Stoffel, Hai Tran, Ronald Askeland, Lawrence Gibson, Steven Schultz, Michael Koenig, Sen Yang, William Sperry, Richard Hartman
  • Publication number: 20070087138
    Abstract: This invention is directed to an recording sheet having improved image dry time for use in printing comprising a substrate having in contact with at least one surface thereof one or more water soluble divalent metal salts, preferably admixed with one or more starches, to process of forming such recording sheet, to a method of generating one or more image(s) on said recording sheet in an printing process and to a recording sheet having one or more images on a surface thereof.
    Type: Application
    Filed: October 14, 2005
    Publication date: April 19, 2007
    Inventors: Michael Koenig, Sen Yang, Richard Hartman, Steve Schultz, John Stoffel, Hai Tran, Ronald Askeland, William Sperry, Lawrence Gibson
  • Publication number: 20060228499
    Abstract: The present invention is drawn to a media sheets, including paper media sheets, which are effective for use in improving water fastness of inks, such as ink-jet inks. The media sheet can comprise a paper substrate, and a polydicyandiamide and a multivalent salt associated with the paper substrate. The polydicyandiamide and the multivalent salt are associated with the paper substrate prior to the ink-jet application.
    Type: Application
    Filed: April 11, 2005
    Publication date: October 12, 2006
    Inventors: Hai Tran, Richard Anderson, Yi-Hua Tsao, Christian Schmid, John Stoffel, William Sperry
  • Patent number: 5661507
    Abstract: Inkjet-printed images (characters or graphics) have an image-quality asymmetry, correlated with the direction of pen scanning. The invention exploits this asymmetry to improve apparent overall quality by forcing the less-perfect side of each image element to become, and be hidden in, the element interior. To achieve this effect, part of each element is printed during pen scanning in one direction and part during scanning in an opposite direction. Neither scan prints the trailing edge--that is, the edge the pen reaches last, when moving in a given direction. Instead each scan prints only the leading edge--plus the interior or part of the interior, if the image is wide enough that its interior forms an analytically separate portion.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: August 26, 1997
    Assignee: Hewlett-Packard Company
    Inventor: Robert William Sperry
  • Patent number: 4940413
    Abstract: A pressure make/break interconnect for two sets of coplanar, parallel traces (30 and 46) includes contact pads (50 and 52) on the ends of the one or both sets of traces (30 and 46), the pads (50 and 52) being wider than the spaces between the traces (30 and 46) but staggered so that there is room for the pads (50 and 52) to fit between the traces (30 and 46). One of each facing pair of the traces (30 and 46) or pads (50 and 52) has on its facing surface a bump (66), which serves as the actual contact point and aids in increasing the contacting pressure. An interconnect support (70) behind one of the pads (50 or 52) is configured to aid in intensifying the pressure applied through the bump (66), ensuring good contact.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: July 10, 1990
    Assignee: Hewlett-Packard Company
    Inventors: Winthrop D. Childers, William Sperry