Patents by Inventor Aiying Wang

Aiying Wang 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).

  • Erasable ink composition containing a graft-polymerized dye
    Patent number: 5756561
    Abstract: An erasable ink composition contains a water-insoluble polymeric dye obtained by the graft polymerization of a preformed water-insoluble polymer with a dye monomer possessing at least one ethylenically unsaturated site. The ink is intended for use in any of a variety of marking instruments, in particular, a ball-point pen.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: May 26, 1998
    Assignee: BIC Corporation
    Inventors: Aiying Wang, Jeffery H. Banning, Wayne A. Chandler, David C. Villiger, Barry W. Chadwick
  • Erasable ink composition containing a polymer-encapsulated colorant derived from monomer containing dissolved colorant
    Patent number: 5661197
    Abstract: An erasable ink composition contains an aqueous dispersion of water-insoluble polymer-encapsulated colorant obtained from the emulsion polymerization of at least one hydrophobic emulsion-polymerizable monomer with at least a portion of the monomer containing colorant dissolved therein. The ink is intended for use in any of a variety of marking instruments, in particular, a ball-point pen.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: August 26, 1997
    Assignee: BIC Corporation
    Inventors: David C. Villiger, Aiying Wang, Jeffery H. Banning, Wayne A. Chandler, Barry W. Chadwick
  • Erasable ink composition containing a waterborne polyurethane-urea derived from an aromatic amine dye monomer and marking instrument containing same
    Patent number: 5637638
    Abstract: An erasable ink composition comprising a waterborne polyurethane-urea containing dye moiety covalently bonded thereto. The ink is intended for use in any of a variety of marking instruments, in particular, a ball-point pen.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: June 10, 1997
    Assignee: BIC Corporation
    Inventors: Wayne A. Chandler, David C. Villiger, Jeffery H. Banning, Barry Chadwick, Aiying Wang