Patents by Inventor Alizreza Zarrabi

Alizreza Zarrabi 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).

  • Electroactive polymer transducers biased for increased output
    Patent number: 7915790
    Abstract: Electroactive polymer transducers are disclosed. They are biased in a manner that provides for increased force and/or stroke output, thereby offering improved work potential and power output capacity. The biasing may offer additional or alternate functional advantage in terms of matching transducer performance with a given application such as a normally-closed valve. The improved biasing (including increased output biasing) may utilize negative spring rate biasing and/or a combination of negative or zero-rate biasing with positive rate biasing to achieve the desired ends.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: March 29, 2011
    Assignee: Bayer MaterialScience AG
    Inventors: Jonathan R. Heim, Ilya Polyakov, Alizreza Zarrabi, Otto Hui