Patents by Inventor Roger Nicholas Thompson

Roger Nicholas Thompson 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).

  • Fabrication of photoconductor drum insert
    Patent number: 6406656
    Abstract: Inserts (1) to reduce noise from photoconductor drums during use are molded by thermal injection to have a bridge (5, 51, 5b) across the longitudinal gap (7, 7a, 6b) of the insert. In the preferred embodiment the bridge is centered with respect to the long dimension of the insert and the bridge is in the form of a rectangle and thin. The bridge holds the shape of the insert during cooling after molding. Subsequently, the bridge may be severed or cut out, but that is generally unnecessary.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: June 18, 2002
    Assignee: Lexmark International, Inc.
    Inventors: Roger Nicholas Thompson, Edward Wayne Weidert