Patents by Inventor Anshuman A. Lall

Anshuman A. Lall 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 online measurement of ultrafine aggregate surface area and volume distributions
    Patent number: 7516019
    Abstract: Method for the online measurement of the number, surface area and volume distribution of nanoparticle aerosol aggregates relates the number and size of primary particles that compose the aggregates and the aggregate mobility diameter. The number distribution of nanoparticle aggregates is obtained by calculations based on the drag on the aggregates and the aggregate charging efficiency. The aggregate surface area and volume are obtained by summing over the surface areas and volume of the primary particles that compose the aggregate. The aggregate surface area and volume distribution is then obtained by multiplying the aggregate surface area, volume and the aggregate number distribution.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: April 7, 2009
    Assignee: The Regents of the University of California
    Inventors: Sheldon K. Friedlander, Anshuman A. Lall