Patents by Inventor Edward Hing Pong Lee

Edward Hing Pong Lee 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).

  • Magnetic transducer with electrically conductive shield for reducing electromagnetic interference
    Patent number: 6859347
    Abstract: A magnetic transducer including an electrically conductive shield (ECS) which is disposed between the substrate and first magnetic shield is described. The ECS is preferably embedded in an insulating undercoat layer. The ECS is preferably electrically isolated from the magnetic sensor element and is externally connected to a ground available in the disk drive through the arm electronics. Two alternative ways for connecting the ECS to a ground are described. In one embodiment which is only effective with single-ended input type arm electronics, the ECS is connected to a ground through a via to a lead pad for the read head which is connected to the ground of the arm electronics. In a second and more preferred embodiment a separate lead pad is included on the head to allow the ECS to be connected to electronic or case ground when the head is installed in the arm. The extent of the ECS should be sufficiently large to cover the read head portion of the transducer, i.e.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: February 22, 2005
    Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
    Inventors: Richard Hsiao, Klaas Berend Klaassen, Edward Hing Pong Lee, Timothy J. Moran, Vladimir Nikitin, Michael Paul Salo, Samuel Wei-San Yuan
  • Magnetic transducer with electrically conductive shield for reducing electromagnetic interference
    Publication number: 20020085316
    Abstract: A magnetic transducer including an electrically conductive shield (ECS) which is disposed between the substrate and first magnetic shield is described. The ECS is preferably embedded in an insulating undercoat layer. The ECS is preferably electrically isolated from the magnetic sensor element and is externally connected to a ground available in the disk drive through the arm electronics. Two alternative ways for connecting the ECS to a ground are described. In one embodiment which is only effective with single-ended input type arm electronics, the ECS is connected to a ground through a via to a lead pad for the read head which is connected to the ground of the arm electronics. In a second and more preferred embodiment a separate lead pad is included on the head to allow the ECS to be connected to electronic or case ground when the head is installed in the arm. The extent of the ECS should be sufficiently large to cover the read head portion of the transducer, i.e.
    Type: Application
    Filed: January 4, 2001
    Publication date: July 4, 2002
    Inventors: Richard Hsiao, Klaas Berend Klaassen, Edward Hing Pong Lee, Timothy J. Moran, Vladimir Nikitin, Michael Paul Salo, Samuel Wei-San Yuan