Patents Examined by Margaret W. Moore
  • Epihalohydrin electrical stress controlling material
    Patent number: 5962569
    Abstract: A non-tacky electrical stress control material comprisinga) about 100 parts of a resin component containing1) from about 20% to about 80% of an epihalohydrin polymer, and2) correspondingly, from about 80% to about 20% of an insulating silicone polymer having a tan .delta. of less than one,b) from about 10 to about 200 parts of a filler, said filler being nonconductive at room temperature, selected from the group consisting of barium titanate and hydrated aluminum silicate, andc) from 0 to 30 parts of a plasticizer.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: October 5, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas J. D. Heyer, Robert A. Wandmacher