Patents by Inventor Joan Marie Massie

Joan Marie Massie 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).

  • Process of making a polyurethane roller with high surface resistance
    Patent number: 5804114
    Abstract: An electrophotographic developer roller is made by casting urethane prepolymer mixed with a butadiene, a trifunctional curative and ferric chloride powder. After curing, the roller is baked, which oxidizes the outer surface. The oxidized surface layer is electrically resistive, which is desirable in a developer roller. An excellent developer roller is achieved at low production cost.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: September 8, 1998
    Assignee: Lexmark International, Inc.
    Inventors: Todd Lucas Janes, Johnny Dale Massie, II, Joan Marie Massie, Ronald Lloyd Roe, Donald Wayne Stafford