Patents by Inventor Nigel R. Sharma

Nigel R. Sharma 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).

  • Method for making micropumps
    Patent number: 6227809
    Abstract: This invention provides a method by which the performance of reciprocating NMPV (No-Moving-Parts-Valve) micropumps can be optimized for a given choice of valve design, e.g. for diffuser/nozzle valves, rectifier valves etc. The method can more generally be used to design and produce NMPV micropumps with structures optimized for maximal pump performance. The method can further be used to design and construct NMPV pumps significantly smaller in size than those currently available to the art without significant loss in pump performance.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: May 8, 2001
    Assignee: University of Washington
    Inventors: Fred K. Forster, Ron L. Bardell, Nigel R. Sharma
  • Micropumps with fixed valves
    Patent number: 5876187
    Abstract: Micropumps fabricated by micromachining techniques and employing fixed or no-moving-parts valves. As one aspect of the invention, a laser-assisted chemical etching technique is employed for providing smooth-walled, curved configuration necessary to obtain the desired flow characteristics of the valves that are used in conjunction with the micropump.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: March 2, 1999
    Assignee: University of Washington
    Inventors: Fred K. Forster, Ronald L. Bardell, Alan P. Blanchard, Martin A. Afromowitz, Nigel R. Sharma