Patents by Inventor Yichao Ma

Yichao Ma 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).

  • Internal disc drive filter assembly
    Patent number: 7848051
    Abstract: An assembly comprises a housing and a rotatable data disc within the housing. The rotatable data disc creates a gas flow within the housing when the rotatable data disc rotates. The assembly further comprises a filter at a perimeter position of the rotatable data disc positioned to capture a portion of the gas flow, a first support element fixed relative to the housing and adjacent an upstream side of the filter, wherein the portion of the gas flow circumscribes the first support element and a second support element fixed to the housing and adjacent a downstream side of the filter, wherein the portion of the gas flow also circumscribes the second support element.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: December 7, 2010
    Assignee: Seagate Technology LLC
    Inventors: Yiren Hong, Yichao Ma, KokWah Tan
  • FREE-STATE MODAL FREQUENCY RESPONSE TESTING
    Publication number: 20090076752
    Abstract: An apparatus and associated method is provided for suspending a test object in a gravitational field from a support member, exciting the test object by noncontactingly engaging it with a predetermined waveform force, and characterizing the test object qualitatively in relation to an observed modal frequency response of the test object to the excitation.
    Type: Application
    Filed: September 17, 2007
    Publication date: March 19, 2009
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Yuqi Wang, YiRen Hong, TakKoon Ooi, YiChao Ma, Kok Tong Soh, MingChou Lin
  • INTERNAL DISC DRIVE FILTER ASSEMBLY
    Publication number: 20090015964
    Abstract: An assembly comprises a housing and a rotatable data disc within the housing. The rotatable data disc creates a gas flow within the housing when the rotatable data disc rotates. The assembly further comprises a filter at a perimeter position of the rotatable data disc positioned to capture a portion of the gas flow, a first support element fixed relative to the housing and adjacent an upstream side of the filter, wherein the portion of the gas flow circumscribes the first support element and a second support element fixed to the housing and adjacent a downstream side of the filter, wherein the portion of the gas flow also circumscribes the second support element.
    Type: Application
    Filed: July 11, 2007
    Publication date: January 15, 2009
    Inventors: Yiren Hong, Yichao Ma, Kok Wah Tan