Patents by Inventor Nathan T. Birkeland

Nathan T. Birkeland 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).

  • Aerosol-based liquid particle detection measurement
    Patent number: 11933708
    Abstract: A measurement system includes an atomizer, an impactor, a particle counter, and a discharge reservoir. The atomizer has a liquid intake port and a gas intake port configured to aerosolize a liquid received at the liquid intake port. The impactor has an inlet coupled to the atomizer and has a first output port and a second output port. The impactor is configured to separate droplets wherein those droplets smaller than a selected cut point are directed to the first output port and those droplets larger than the selected cut point are directed to the second output port. The particle counter is coupled to the first output port and is configured to count particles larger than at least one particle size cut point. The discharge reservoir is coupled to the second output port.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: March 19, 2024
    Assignee: TSI Incorporated
    Inventors: Hee-Siew Han, Kenneth R Farmer, II, Nathan T. Birkeland, Richard J. Remiarz, Timothy S. Russell, William D. Dick
  • AEROSOL-BASED LIQUID PARTICLE DETECTION MEASUREMENT
    Publication number: 20220357262
    Abstract: A measurement system includes an atomizer, an impactor, a particle counter, and a discharge reservoir. The atomizer has a liquid intake port and a gas intake port configured to aerosolize a liquid received at the liquid intake port. The impactor has an inlet coupled to the atomizer and has a first output port and a second output port. The impactor is configured to separate droplets wherein those droplets smaller than a selected cut point are directed to the first output port and those droplets larger than the selected cut point are directed to the second output port. The particle counter is coupled to the first output port and is configured to count particles larger than at least one particle size cut point. The discharge reservoir is coupled to the second output port.
    Type: Application
    Filed: February 18, 2022
    Publication date: November 10, 2022
    Inventors: Hee-Siew Han, Kenneth R Farmer, II, Nathan T. Birkeland, Richard J. Remiarz, Timothy S. Russell, William D. Dick