Patents by Inventor Bill Sperry

Bill 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).

  • Ink compositions for use in highlighter markers and associated methods
    Patent number: 8007096
    Abstract: Highlighter ink compositions can be prepared which provide improved abilities to reduce smear during highlighting. Highlighter ink compositions can include an acid buffer having a pKa from about 2 to about 6, a highlighter colorant, and a liquid vehicle. The image for highlighting can be formed on the substrate using any conventional printing technique, such as ink-jet printing or other printing techniques. Application of the highlighter ink compositions of the present invention to a printed image results in a reduced degree of image smear, particularly when the image was produced by an ink-jet printing process. Further, the acid buffer can be configured for reducing mobility of specific ink-jet colorants. In this way, the highlighter ink composition can be specifically tailored for reducing smear of various printed inks.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: August 30, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Christian Schmid, John L. Stoffel, Bill Sperry
  • Print media and methods of making print media
    Patent number: 7553395
    Abstract: Print media and methods of making print media are disclosed. One exemplary print medium, among others, includes a substrate having a fibrous component. In addition, a cationic guanidine polymer compound or salt thereof and a metallic salt are each disposed within the fibrous component of the substrate.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: June 30, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: John L Stoffel, Bill Sperry, Richard J McManus, Hai Q Tran, Yi-Hua Tsao
  • Print media and methods of making print media
    Publication number: 20050217815
    Abstract: Print media and methods of making print media are disclosed. One exemplary print medium, among others, includes a substrate having a fibrous component. In addition, a cationic guanidine polymer compound or salt thereof and a metallic salt are each disposed within the fibrous component of the substrate.
    Type: Application
    Filed: April 2, 2004
    Publication date: October 6, 2005
    Inventors: John Stoffel, Bill Sperry, Richard McManus, Hai Tran, Yi-Hua Tsao
  • Ink compositions for use in highlighter markers and associated methods
    Publication number: 20050093949
    Abstract: Highlighter ink compositions can be prepared which provide improved abilities to reduce smear during highlighting. Highlighter ink compositions can include an acid buffer having a pKa from about 2 to about 6, a highlighter colorant, and a liquid vehicle. The image for highlighting can be formed on the substrate using any conventional printing technique, such as ink-jet printing or other printing techniques. Application of the highlighter ink compositions of the present invention to a printed image results in a reduced degree of image smear, particularly when the image was produced by an ink-jet printing process. Further, the acid buffer can be configured for reducing mobility of specific ink-jet colorants. In this way, the highlighter ink composition can be specifically tailored for reducing smear of various printed inks.
    Type: Application
    Filed: October 29, 2003
    Publication date: May 5, 2005
    Inventors: Christian Schmid, John Stoffel, Bill Sperry