Patents by Inventor Swarnali Rana, legal representative

Swarnali Rana, 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).

  • Transient voltage clamping circuit
    Patent number: 7532445
    Abstract: A circuit for transient voltage clamping, the circuit being internal to a motor driver ASIC for a hard drive and including a power transistor for sinking a power supply voltage subjected to transient variation, a reference circuit for deriving a first reference voltage from a second reference voltage and the power supply voltage, and an amplifier circuit for receiving the first reference voltage as input and for driving the power transistor.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: May 12, 2009
    Assignee: STMicroelectronics Asia Pacific Pte Ltd.
    Inventors: Swarnali Rana, legal representative, Sakti Pada Rana