Patents by Inventor Chang B. YI

Chang B. YI 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 and apparatus for cryogenic dynamic cooling
    Patent number: 10054363
    Abstract: A cryogenic dynamic cooling apparatus and a cooling method for heat assisted magnetic recording media substrate are provided. The cooling apparatus includes a chamber that is configured to receive a substrate. A substrate holder secures the substrate inside the chamber. The apparatus has a cooling plate that is movable between a retracted position and an extended position inside the chamber. The cooling plate provides clearance for movement of the substrate holder inside the chamber in the retracted position, and the cooling plate cools the substrate in the extended position. Also, the cooling plate is substantially parallel to and spaced apart from the substrate. The apparatus further includes a cryogenic operatively coupled to the cooling plate that is cooled by the cryogenic cooling element.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: August 21, 2018
    Assignee: WD Media, LLC
    Inventors: Chang B. Yi, Tatsuru Tanaka, Phi Cam Ha, Noe D. Taburaza, Yew Ming Chiong, Hongling Liu
  • METHOD AND APPARATUS FOR CRYOGENIC DYNAMIC COOLING
    Publication number: 20160047596
    Abstract: Aspects of the present invention are directed to a cryogenic dynamic cooling apparatus and a cooling method for heat assisted magnetic recording media substrate. The cooling apparatus includes a chamber that is configured to receive a substrate. A substrate holder secures the substrate inside the chamber. The apparatus has a cooling plate that is movable between a retracted position and an extended position inside the chamber. The cooling plate provides clearance for movement of the substrate holder inside the chamber in the retracted position, and the cooling plate cools the substrate in the extended position. Also, the cooling plate is substantially parallel to and spaced apart from the substrate. The apparatus further includes a cryogenic cooling element operatively coupled to the cooling plate that is cooled by the cryogenic cooling element.
    Type: Application
    Filed: August 15, 2014
    Publication date: February 18, 2016
    Inventors: CHANG B. YI, TATSURU TANAKA, PHI CAM HA, NOE D. TABURAZA, YEW MING CHIONG, HONGLING LIU
  • DUAL SINGLE SIDED SPUTTER CHAMBERS WITH SUSTAINING HEATER
    Publication number: 20140050843
    Abstract: A disk processing system having a heater chamber and dual single-sided sputter chambers each with a sustaining heater.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 20, 2014
    Applicant: WD MEDIA, INC.
    Inventors: Chang B. YI, Hongling LIU, Hua YUAN, Tatsuru TANAKA