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:
Jul. 18, 2023
Filed:
Jul. 13, 2018
Pegasor Oy, Tampere, FI;
Antti Rostedt, Tampere, FI;
Jorma Keskinen, Tampere, FI;
Erkka Saukko, Tampere, FI;
Kauko Janka, Tampere, FI;
PEGASOR OY, Tampere, FI;
Abstract
The invention relates to a method and an apparatus for measuring particle concentrations in an aerosol. The apparatus comprises means () for driving flow () into apparatus (), means () for electrically charging particles () to become electrically charged particles () by ions () produced by a charger, means () for removing free ions () which are not attached to the electrically charged particles (), and means () for measuring electrical current carried by the electrically charged particles (). The means () for charging the particles and the means () for measuring electrical current carried by the electrically charged particles () are dimensioned such that the means () for measuring electrical current carried by the electrically charged particles () only measures a part of a total current carried by the particles.