The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2014
Filed:
Mar. 31, 2011
Terence Barrett, Burlington, VT (US);
Britt Holmen, Burlington, VT (US);
Terence Barrett, Burlington, VT (US);
Britt Holmen, Burlington, VT (US);
The University of Vermont and State Agriculture College, Burlington, VT (US);
Abstract
A micro-fabricated double condenser method and apparatus for the measurement of number-size distribution of airborne nanoparticles is provided. The invention is an instrument which can measure particle size under 100 nanometers in-situ. The present invention includes features such as a small nanoparticle airborne particulate analyzer, with a voltage-stable and feedback-controlled instrument package. The invention features also include a micro-fabricated nanoparticle charging and sorting device (NCaS). The present invention provides a portable, lightweight, and efficacious particle-sizing instrument that is able to effectively count and size nanoparticles over a wide range of operating conditions.