Patents by Inventor Aparna C. Vadde

Aparna C. Vadde 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).

  • Patent number: 6989972
    Abstract: Magnetoresistive (MR) sensors have leads that overlap a MR structure and distribute current to the MR structure so that the current is not concentrated in small portions of the leads. An electrically resistive capping layer can be formed between the leads and the MR structure to distribute the current. The leads can include resistive layers and conductive layers, the resistive layers having a thickness-to-resistivity ratio that is greater than that of each of the conductive layers. The resistive layers may protect the conductive layers during MR structure etching, so that the leads have broad layers of electrically conductive material for connection to MR structures. The broad leads conduct heat better than the read gap material that they replace, further reducing the temperature at the connection between the leads and the MR structure.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: January 24, 2006
    Assignee: Western Digital (Fremont), Inc.
    Inventors: Kroum Stoev, Mathew Gibbons, Francis Liu, Bogdan M. Simion, Aparna C. Vadde, Jing Zhang, Yiming Huai, Marcos M. Lederman