Patents Assigned to DAS Devices, Inc.
  • Patent number: 5778514
    Abstract: Metal-in-the-gap (MIG) transducing head formed on a substrate for use in a magnetic storage device for writing and/or reading data in the form of magnetic flux onto and/or from tracks on magnetic media which moves relative to the head, formed by batch processing techniques. In preferred embodiment, MIG head is write head and further includes magnetoresistive read head, all on a common substrate.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: July 14, 1998
    Assignee: DAS Devices, Inc.
    Inventor: Shyam Chandra Das
  • Patent number: 5404635
    Abstract: Process for fabricating a thin film head for high track density recording defines an easy axis parallel to the track in the narrow poletip without a need of a very high magnetic field in the plating cell. Narrow poletips of equal widths of P1 and P2 are obtained. The process includes sheet depositing a magnetic layer, then depositing a sheet of gap material, and then depositing a sheet of another magnetic layer. This operation can be done either by a vacuum technique or by an electroplating process. If it is done by vacuum processing, all the three depositions can be done in one pumpdown. Since the sheet magnetic films are deposited, the demagnetizing field is very small, and a small orienting field is necessary unlike the large field required in the prior art.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: April 11, 1995
    Assignee: DAS Devices, Inc.
    Inventor: Shyam C. Das