Patents by Inventor Ki Sup Chung

Ki Sup Chung 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).

  • Magnetic recording head formed by damascene process
    Patent number: 8018677
    Abstract: A method and system for manufacturing a pole for a magnetic recording head. The method and system include providing an insulator and fabricating at least one hard mask on the insulator. The at least one hard mask has an aperture therein. The method and system also include removing a portion of the insulator to form a trench within the insulator. The trench is formed under the aperture. The method and system further include depositing at least one ferromagnetic material. The pole includes a portion of the ferromagnetic material within the trench.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: September 13, 2011
    Assignee: Western Digital (Fremont), LLC
    Inventors: Ki Sup Chung, Kyusik Sin, Danning Yang, Yingjian Chen, Brant Nease
  • Method and system for providing perpendicular magnetic recording transducers
    Patent number: 7508627
    Abstract: A method and system for providing a magnetic recording transducer are disclosed. The method and system include providing a metallic underlayer directly on a portion of an insulating layer. The method and system also include forming a perpendicular magnetic recording pole on the metallic underlayer. The perpendicular magnetic recording pole has a top, a bottom narrower than the top, and sides. The perpendicular magnetic recording pole has a pole removal rate. The method and system also include providing an insulator having an insulator removal rate. The insulator substantially surrounds at least the sides of the perpendicular magnetic recording pole. The metallic underlayer has a removal rate that is at least one of less than the insulator removal rate and substantially equal to the pole removal rate.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: March 24, 2009
    Assignee: Western Digital (Fremont), LLC
    Inventors: Lei Larry Zhang, Danning Yang, Honglin Zhu, Ki Sup Chung, Francis H. Liu, Yingjiang Chen
  • Damascene process for fabricating poles in recording heads
    Patent number: 7444740
    Abstract: A method and system for manufacturing a pole for a magnetic recording head. The method and system include providing an insulator and fabricating at least one hard mask on the insulator. The at least one hard mask has an aperture therein. The method and system also include removing a portion of the insulator to form a trench within the insulator. The trench is formed under the aperture. The method and system further include depositing at least one ferromagnetic material. The pole includes a portion of the ferromagnetic material within the trench.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: November 4, 2008
    Assignee: Western Digital (Fremont), LLC
    Inventors: Ki Sup Chung, Kyusik Sin, Danning Yang, Yingjian Chen, Brant Nease