Patents by Inventor Paul Michalek

Paul Michalek 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).

  • Integrated thin film magnetic head with planar structure
    Patent number: 5247414
    Abstract: Thin film magnetic head structure includes digital read/write heads and analog read heads integrated on a single substrate. The "wrap around pole effect" is reduced or eliminated by having the thicknesses of the digital lower flux guides and the analog read gap-defining layer approximately the same, resulting in improved signal output from the digital read heads. The structure is useful in cassette decks designed to play both digital and analog compact cassettes.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: September 21, 1993
    Assignee: North American Philips Corporation
    Inventors: Terry Mitchell, William P. Wood, Paul Michalek