Patents by Inventor Palanivelu Thyagarajan, legal representative

Palanivelu Thyagarajan, legal representative 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).

  • Centrifugal rotary blood pump with impeller having a hydrodynamic thrust bearing surface
    Patent number: 8152493
    Abstract: A rotary blood pump may include one or more motor stators overlying exterior surfaces of a wall defining a pumping chamber. A rotatable impeller within the pumping chamber may have a hydrodynamic thrust bearing surface adapted to constrain a position of the impeller along an axis of rotation relative to the wall when the impeller is rotating about the axis of rotation. The impeller position may then be constrained without requiring a constant polarity magnetic force to be applied in the axial direction from a fixed position of the housing.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: April 10, 2012
    Assignee: Hearthware Inc.
    Inventors: Jeffrey A. LaRose, Charles R. Shambaugh, Jr., Daniel G. White, Lisandro Rivera, Kartikeyan Trichi, Palanivelu Thyagarajan, legal representative