Patents by Inventor Y. Martin Lu

Y. Martin Lu 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).

  • Continuous combined pigmented wax compounding and bichromal sphere fabrication process
    Patent number: 7374797
    Abstract: A system and method for the continuous fabrication of bichromal spheres by introducing continuous streams of differently colored, pigmented polymer melts to substantially opposite sides of a plurality of spinning disks. The system comprises a first and second extruder which melts a raw polymer material and mixes the melted polymer with a pigment and optionally a charge control agent. The first and second extruders are connected to substantially opposite sides of a plurality of spinning disks with optionally interconnected gear pumps and mixing devices. The instant system and method is useful in fabricating large quantities of bichromal spheres in a continuous manner with a higher degree of uniformity in their physical characteristics.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: May 20, 2008
    Assignee: Xerox Corporation
    Inventor: Y. Martin Lu
  • Continuous combined pigmented wax compounding and bichromal sphere fabrication process
    Publication number: 20030180494
    Abstract: A system and method for the continuous fabrication of bichromal spheres by introducing continuous streams of differently colored, pigmented polymer melts to substantially opposite sides of a plurality of spinning disks. The system comprises a first and second extruder which melts a raw polymer material and mixes the melted polymer with a pigment and optionally a charge control agent. The first and second extruders are connected to substantially opposite sides of a plurality of spinning disks with optionally interconnected gear pumps and mixing devices. The instant system and method is useful in fabricating large quantities of bichromal spheres in a continuous manner with a higher degree of uniformity in their physical characteristics.
    Type: Application
    Filed: March 25, 2003
    Publication date: September 25, 2003
    Inventor: Y. Martin Lu