Patents by Inventor Nathan Kesavan

Nathan Kesavan 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).

  • Passive sampling of airborne particles with the aid of natural air flow
    Patent number: 11371916
    Abstract: An apparatus for passive sampling of airborne particles such as those found in an aerosol is disclosed. The passive sampler is designed to take advantage of natural air flow to collect airborne particles, such as those contained in an aerosol, for subsequent analysis. The passive sampler increases the sampling efficiency for diffusion and electrostatic collection of particles by using natural airflow or movement to bring particles closer to the deposition surface. Alternately charged electret filters further increase the sampling efficiency.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: June 28, 2022
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Jana S Kesavan, Nathan Kesavan, Jerold R Bottiger
  • Passive sampling of airborne particles with the aid of natural air flow
    Patent number: 10775279
    Abstract: An apparatus for passive sampling of airborne particles such as those found in an aerosol is disclosed. The passive sampler is designed to take advantage of natural air flow to collect airborne particles, such as those contained in an aerosol, for subsequent analysis. The passive sampler increases the sampling efficiency for diffusion and electrostatic collection of particles by using natural airflow or movement to bring particles closer to the deposition surface. Alternately charged electret filters further increase the sampling efficiency.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: September 15, 2020
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Jana S Kesavan, Nathan Kesavan, Jerold R Bottiger