Patents by Inventor Teresa L. Pickett

Teresa L. Pickett 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).

  • Chilled temperature polishing method for soft acrylic articles
    Patent number: 6186868
    Abstract: A method of polishing articles comprising soft acrylic materials is disclosed. The method includes a polishing step and a cleaning step. In the polishing step a receptacle is charged with polishing beads of various sizes, alumina, sodium hydroxide, water, a surfactant, and the articles to be polished, and agitated for a period of time and at a speed sufficient to remove surface irregularities. The polishing step is completed below the glass transition (Tg) point of the acrylic article being polished but above 0° C. Following the polishing step, the polished articles are cleaned by rinsing them with water for a period of time to clean the surface of the polished articles.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: February 13, 2001
    Assignee: Alcon Laboratories, Inc.
    Inventors: Bryan L. Cremeans, Teresa L. Pickett, Jennia Tucker