Patents by Inventor Vincent Sum

Vincent Sum 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).

  • Method of highlighting with a reversible highlighting mixture, highlighting kit, and highlighted complex
    Publication number: 20050158471
    Abstract: A highlightable mixture, such as an ink, including a colored pigment, an eradicable colorant, and a non-eradicable colorant; a kit including the highlightable mixture and an eradicator fluid; an colorant complex including a colorless or substantially colorless eradicable dye selected from the group consisting of diarylmethane derivatives, triarylmethane derivatives, and methine dyes, and a colored pigment; and methods of applying an eradicator to at least a portion of a marking made with a highlightable mixture, are described herein.
    Type: Application
    Filed: December 21, 2004
    Publication date: July 21, 2005
    Inventors: Leighton Davies-Smith, Vincent Sum Kwan
  • Highlightable and highlighted mixtures, marking instruments, and methods of using the same
    Publication number: 20050120919
    Abstract: A highlightable mixture, such as an ink, including a colored pigment, an eradicable colorant, and a non-eradicable colorant; a kit including the highlightable mixture and an eradicator solution; colorant complex including a colorless or substantially colorless eradicable dye selected from the group consisting of diarylmethane derivatives, triarylmethane derivatives, and methine dyes, and a colored pigment; and methods of applying an eradicator to at least a portion of a marking made with a highlightable mixture, are described herein.
    Type: Application
    Filed: October 1, 2004
    Publication date: June 9, 2005
    Inventors: Leighton Davies-Smith, Vincent Sum