Patents by Inventor Norman Schlaegel

Norman Schlaegel 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 for manufacturing an ear fitted acoustical hearing aid
    Patent number: 4652414
    Abstract: A hollow shell-type hearing aid is prepared from an impression of the ear. A mold is formed from the impression. An opening is cut in the mold and the mold is filled through the opening with hardenable material. The hardenable material is allowed to cure until a hard shell of the material forms on the surface of the mold. The remaining hardenable material is poured out of the mold through the opening and the shell is then removed.
    Type: Grant
    Filed: February 12, 1985
    Date of Patent: March 24, 1987
    Assignee: Innovative Hearing Corporation
    Inventor: Norman Schlaegel