Patents by Inventor Kwong Hang Adwood Tang

Kwong Hang Adwood Tang 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).

  • Liquid graphite
    Patent number: 7951236
    Abstract: A composition of liquid graphite is presented. The liquid graphite can be erased and applied to a surface using a writing instrument such as a ball point pen with a consistency, accuracy and darkness equivalent to that of a standard graphite, No. 2 pencil. The liquid graphite comprises a formulation of carbon powder, solvent and adhesive in a concentration that provides a dark, consistent marking.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: May 31, 2011
    Assignee: JAKKS Pacific, Inc.
    Inventors: Kathleen Torrell, Anthony P. Bazan, Kwong Hang Adwood Tang