Pramod S Kulkarni, Age 51Mason, OH

8611066, Dec 17, 2013

Dec 9, 2011

13/315344

Pramod Kulkarni - Mason OH, US
Chaolong Qi - Cincinnati OH, US

Centers for Disease Control and Prevention - Atlanta GA

H01H 47/00

361231, 361220

A bipolar charger includes a housing with a main chamber and positive and negative electrode chambers facing each other. The electrode chambers each have a ground electrode and a high voltage electrode that cooperate to create a cloud of ions. An aerosol flowing from an inlet passage through the main chamber and out an outlet passage mixes with the clouds of ions, thereby providing an aerosol with a steady-state electric charge distribution.

2006014, Jul 6, 2006

Dec 30, 2004

11/026726

Jian Wang - Port Jefferson NY, US
Pramod Kulkarni - Port Jefferson Station NY, US

G01N 21/00

356338000

A device for measuring aerosol size distribution within a sample containing aerosol particles. The device generally includes a spectrometer housing defining an interior chamber and a camera for recording aerosol size streams exiting the chamber. The housing includes an inlet for introducing a flow medium into the chamber in a flow direction, an aerosol injection port adjacent the inlet for introducing a charged aerosol sample into the chamber, a separation section for applying an electric field to the aerosol sample across the flow direction and an outlet opposite the inlet. In the separation section, the aerosol sample becomes entrained in the flow medium and the aerosol particles within the aerosol sample are separated by size into a plurality of aerosol flow streams under the influence of the electric field. The camera is disposed adjacent the housing outlet for optically detecting a relative position of at least one aerosol flow stream exiting the outlet and for optically detecting the number of aerosol particles within the at least one aerosol flow stream.

2013014, Jun 13, 2013

Dec 9, 2011

13/315372

Pramod Kulkarni - Mason OH, US
Prasoon Diwakar - Cincinnati OH, US

Human Services, Centers for Disease Control and Prevention - Atlanta GA

G01N 21/67

356313

Particles of a flow of aerosol are collected and analyzed by passing them through a housing having an inlet area, an outlet area, and a collection and analysis area interconnecting the inlet and outlet areas. A collection electrode has a tip disposed in the collection and analysis area and particles are collected thereon. After collection, the particles are ablated and atomic emissions are collected for analysis of the particles.