Patents by Inventor Phuwanai Bunnak

Phuwanai Bunnak 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).

  • System and method for providing a protective layer having a graded intermediate layer
    Patent number: 9805748
    Abstract: A method of providing an apparatus with a protective layer by simultaneously depositing carbon and seed material on the apparatus to form an intermediate layer, wherein the carbon and seed material have a percentage composition that varies as a function of the intermediate layer thickness; and then providing a diamond-like carbon (DLC) layer adjacent to the intermediate layer to produce the protective layer.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: October 31, 2017
    Assignee: WESTERN DIGITAL (FREMONT), LLC
    Inventors: Yongping Gong, Budi Suswadi, Phuwanai Bunnak, Kah Choong Loo, Krisda Siangchaew
  • Slider for magnetic recording system
    Patent number: 9449631
    Abstract: Systems and methods for tuning seed layer hardness in components of magnetic recording systems are described. One such system includes a substrate including a component of a magnetic recording system, a first deposition source configured to deposit a seed layer material on a portion of a top surface of the substrate at a first angle, and a second deposition source configured to deposit a carbon material including sp3 carbon bonds on the portion of the top surface at a second angle not equal to the first angle, where the first deposition source and the second deposition source deposit the seed layer material and the carbon material, respectively, simultaneously. The component can be a slider or a magnetic medium.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: September 20, 2016
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Yongping Gong, Phuwanai Bunnak, Kah Choong Loo, Krisda Siangchaew
  • SYSTEMS AND METHODS FOR TUNING SEED LAYER HARDNESS IN COMPONENTS OF MAGNETIC RECORDING SYSTEMS
    Publication number: 20150332720
    Abstract: Systems and methods for tuning seed layer hardness in components of magnetic recording systems are described. One such system includes a substrate including a component of a magnetic recording system, a first deposition source configured to deposit a seed layer material on a portion of a top surface of the substrate at a first angle, and a second deposition source configured to deposit a carbon material including sp3 carbon bonds on the portion of the top surface at a second angle not equal to the first angle, where the first deposition source and the second deposition source deposit the seed layer material and the carbon material, respectively, simultaneously. The component can be a slider or a magnetic medium.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 19, 2015
    Inventors: YONGPING GONG, PHUWANAI BUNNAK, KAH CHOONG LOO, KRISDA SIANGCHAEW
  • Systems and methods for tuning seed layer hardness in components of magnetic recording systems
    Patent number: 9093102
    Abstract: Systems and methods for tuning seed layer hardness in components of magnetic recording systems are described. One such system includes a substrate including a component of a magnetic recording system, a first deposition source configured to deposit a seed layer material on a portion of a top surface of the substrate at a first angle, and a second deposition source configured to deposit a carbon material including sp3 carbon bonds on the portion of the top surface at a second angle not equal to the first angle, where the first deposition source and the second deposition source deposit the seed layer material and the carbon material, respectively, simultaneously. The component can be a slider or a magnetic medium.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: July 28, 2015
    Assignee: Western Digital Technologies, Inc.
    Inventors: Yongping Gong, Phuwanai Bunnak, Kah Choong Loo, Krisda Siangchaew