Patents by Inventor Phanphat Taechangam

Phanphat Taechangam 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 to stress relieve a magnetic recording head transducer utilizing ultrasonic cavitation
    Patent number: 9242340
    Abstract: Magnetic heads are fabricated by slicing and dicing wafers into row bars, which undergo frontside lapping and backside lapping. These lapping processes, as well as other processes, induce stresses on the row bars that are released prior to finalizing the magnetic head. Ultrasonic impact technology is used to release the stress in the row bars and to clean the row bars at the same time. Ultrasonic impact technology is used after the row bars have been wire bonded without having to de-bond the row bars.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: January 26, 2016
    Assignee: Western Digital Technologies, Inc.
    Inventors: Mark D. Moravec, Phanphat Taechangam, Alan H. Brothers