Patents by Inventor Johannes P. Haisma

Johannes P. Haisma 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).

  • Method of manufacturing a magnetic head unit
    Patent number: 5832591
    Abstract: Method in which a magnetic head unit is manufactured from a magnetic head and a support. The magnetic head is manufactured by providing a thin-film magnetic head structure with a ground conductor on an electrically conducting substrate. Before the magnetic head is secured to the support, an electrically insulating layer present on an outer side of the substrate is removed, whereafter an electrically conducting contact layer (39) is formed on the surface obtained. By securing the magnetic head to the support, the contact layer will be in contact with parts (43a, 43b) of the support for the purpose of grounding the support.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: November 10, 1998
    Assignee: U.S. Philips Corporation
    Inventors: Gerardus M. Dohmen, Johannes P. Haisma, Victor Zieren