Patents by Inventor Jamice C. Adams

Jamice C. Adams 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 marking a substrate
    Patent number: 6372819
    Abstract: The present invention provides a laser markable coating composition comprising a colorant and a polymeric material whose opacity changes substantially irreversibly when exposed to heat. The composition may further include a carrier, an adhesion promoter, an energy transfer agent, an opaque polymeric material, and one or more binder resins. The present invention further provides a heat responsive colorant particle comprising a colorant and a polymeric material whose opacity changes substantially irreversibly when exposed to heat. A laser beam can be used to provide the heat. An example of a suitable polymeric material that irreversibly changes in opacity is a styrene/acrylic microsphere. An example of a suitable colorant is carbon black pigment. An example of an energy transfer agent is fumed silica. An example of an adhesion promoter is an oxidized polyethylene. An example of a suitable carrier is water.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: April 16, 2002
    Assignee: Marconi Data Systems Inc.
    Inventors: Yoshikazu Mizobuchi, Jamice C. Adams
  • Coating composition
    Patent number: 6133342
    Abstract: The present invention provides a laser markable coating composition comprising a colorant and a polymeric material whose opacity changes substantially irreversibly when exposed to heat. The composition may further include a carrier, an adhesion promoter, an energy transfer agent, an opaque polymeric material, and one or more binder resins. The present invention further provides a heat responsive colorant particle comprising a colorant and a polymeric material whose opacity changes substantially irreversibly when exposed to heat. A laser beam can be used to provide the heat. An example of a suitable polymeric material that irreversibly changes in opacity is a styrene/acrylic microsphere. An example of a suitable colorant is carbon black pigment. An example of an energy transfer agent is fumed silica. An example of an adhesion promoter is an oxidized polyethylene. An example of a suitable carrier is water.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: October 17, 2000
    Assignee: Marconi Data Systems Inc.
    Inventors: Yoshikazu Mizobuchi, Jamice C. Adams