Patents by Inventor Penny Wan Ting Looi

Penny Wan Ting Looi 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).

  • Air-bearing design for hydrocarbon and lube pick-up improvements in hard disk drive (HDD)
    Patent number: 9940960
    Abstract: A slider design for a hard disk drive (HDD) features an air-bearing surface (ABS) topography with arrays of micro-dots formed on bases of a multiplicity of cavities at different depths. The design eliminates the accumulation of hydrocarbons (e.g., spindle oil and disk lubricant) deposits in regions of air stagnation within the cavities where backflows and foreflows of air meet and cancel during HDD operation. The micro-dots are small raised regions of various shapes having sizes and spacings in the range between 2 and 100 microns and, in a preferred embodiment, heights of 0.15 microns above the cavity bases.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: April 10, 2018
    Assignees: SAE Magnetics (HK) Ltd., Headway Technologies, Inc.
    Inventors: Ellis Cha, Sindy Yeung, Penny Wan Ting Looi, Ben Kwun Pan Ng
  • Air-Bearing Design for Hydrocarbon and Lube Pick-Up Improvements in Hard Disk Drive (HDD)
    Publication number: 20170345452
    Abstract: A slider design for a hard disk drive (HDD) features an air-bearing surface (ABS) topography with arrays of micro-dots formed on bases of a multiplicity of cavities at different depths. The design eliminates the accumulation of hydrocarbons (e.g., spindle oil and disk lubricant) deposits in regions of air stagnation within the cavities where backflows and foreflows of air meet and cancel during HDD operation. The micro-dots are small raised regions of various shapes having sizes and spacings in the range between 2 and 100 microns and, in a preferred embodiment, heights of 0.15 microns above the cavity bases.
    Type: Application
    Filed: May 24, 2016
    Publication date: November 30, 2017
    Inventors: Ellis Cha, Sindy Yeung, Penny Wan Ting Looi, Ben Kwun Pan Ng