Patents by Inventor Heidi L. Dickstein

Heidi L. Dickstein 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).

  • Thin film magnetic heads with thermally crosslinked insulation
    Patent number: 4875124
    Abstract: A thin film magnetic head is provided in which the electrical insulation surrounding the conductive coil comprises a photosensitive resin which has been crosslinked by a thermally activated crosslinking agent or promotor. The addition of the thermally activated crosslinking agent or promotor greatly reduces both the cure temperature and cure time and results in enhanced dimensional stability without any deleterious effects.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: October 17, 1989
    Assignee: International Business Machines Corporation
    Inventors: Heidi L. Dickstein, Hiroyuki Hiraoka, James H. Lee
  • Magnetic disk coatings
    Patent number: 4397751
    Abstract: A magnetic disk coating composition contains magnetic particles and a binder system comprising epoxy and phenolic resins, a titanate coupling agent and a water miscible solvent system, the coating having a pigment volume concentration of up to 35.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: August 9, 1983
    Assignee: International Business Machines Corporation
    Inventors: Heidi L. Dickstein, William H. Dickstein