Patents by Inventor Kwong Hang Tang

Kwong Hang 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
    Publication number: 20070243006
    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: Application
    Filed: April 17, 2006
    Publication date: October 18, 2007
    Inventors: Kathleen Torrell, Anthony Bazan, Kwong Hang Tang