Patents by Inventor Sivalingam Marimuthu

Sivalingam Marimuthu 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).

  • Patent number: 7729082
    Abstract: The present invention relates to HDD screws, and more specifically to lubricating the HDD screws. HDD screws may be coated in a layer of a PFPE based lubricant to reduce friction while fastening the screw into a HDD. In addition to providing superior lubricity and reduced friction during fastening and longer shelf life, PFPE lubricated screws provide narrower clamping load distribution and lower particle generation compared to currently used screw lubricants. Furthermore, because PFPE lubricants are also used to lubricate magnetic disk surfaces, the HDD screws may provide a reservoir for replenishing depleting lubricants on the magnetic disk drive surface.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: June 1, 2010
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Kor Seng Ang, Shaoyong Liu, Sivalingam Marimuthu, Jing Fang Pan, Yi Zhao Yao
  • Publication number: 20080110136
    Abstract: A system and method for opening a vacuum package is disclosed. The method includes providing a chamber at a normal pressure and loading the chamber with a vacuum package wherein the vacuum package is at a first pressure. The method also includes applying a vacuum to the chamber such that the pressure inside the chamber is substantially equal to the first pressure. The method further includes opening the vacuum package and equalizing the pressure inside the chamber to the normal pressure.
    Type: Application
    Filed: November 13, 2006
    Publication date: May 15, 2008
    Inventors: Shaoyong Liu, Jing Fang Pan, Yi Zhao Yao, Kor Seng Ang, Sivalingam Marimuthu
  • Publication number: 20080024909
    Abstract: The present invention relates to HDD screws, and more specifically to lubricating the HDD screws. HDD screws may be coated in a layer of a PFPE based lubricant to reduce friction while fastening the screw into a HDD. In addition to providing superior lubricity and reduced friction during fastening and longer shelf life, PFPE lubricated screws provide narrower clamping load distribution and lower particle generation compared to currently used screw lubricants. Furthermore, because PFPE lubricants are also used to lubricate magnetic disk surfaces, the HDD screws may provide a reservoir for replenishing depleting lubricants on the magnetic disk drive surface.
    Type: Application
    Filed: July 25, 2006
    Publication date: January 31, 2008
    Inventors: Kor Seng Ang, Shaoyong Liu, Sivalingam Marimuthu, Jing Fang Pan, Yi Zhao Yao
  • Patent number: 7271598
    Abstract: A system and method for detecting a defect in an actuator arm conductor coil is disclosed. An actuator arm including a conductor coil is received. The conductor coil is coupled with a voltage as an anode. The conductor coil is submerged into a first solution, the first solution having no organic matter therein. The first solution is then coupled with a second solution including an organic indicator. The second solution also includes a cathode coupled to the voltage such that a defect in an insulation layer of the conductor coil is indicated by the organic indicator.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: September 18, 2007
    Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
    Inventors: Kelvin Kor Seng Ang, Shaoyong Liu, Sivalingam Marimuthu, Yi Zhao Yao, Jingjing Zhang
  • Patent number: 7239121
    Abstract: Embodiments of the present invention include a method for quantitatively detecting embedded particles of a disk spacer ring comprising. The method includes dissolving a layer of a disk spacer ring into a liquid solution, the disk spacer ring layer comprising embedded particles. The method further includes filtering the solution to capture the embedded particles. The method further includes counting the particles.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: July 3, 2007
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Shaoyong Liu, Kor Seng Kelvin Ang, Sivalingam Marimuthu, Jingjing Zhang, Yi Zhao Yao
  • Publication number: 20060202670
    Abstract: Embodiments of the present invention include a method for quantitatively detecting embedded particles of a disk spacer ring comprising. The method includes dissolving a layer of a disk spacer ring into a liquid solution, the disk spacer ring layer comprising embedded particles. The method further includes filtering the solution to capture the embedded particles. The method further includes counting the particles.
    Type: Application
    Filed: March 11, 2005
    Publication date: September 14, 2006
    Inventors: Shaoyong Liu, Kor Seng Ang, Sivalingam Marimuthu, Jingjing Zhang, Yi Yao