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:
Jan. 11, 2000
Filed:
Feb. 05, 1997
Applicant:
Inventors:
Denis Boulaud, Paris, FR;
Michel Pourprix, Montlhery, FR;
Assignee:
Commissariat A l'Energie Atomique, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
738655 ; 95 34 ;
Abstract
A charged particle selector having first and second circular electrical mobility selector portions is shown to include directing portions for directing particles selected by the first circular electrical mobility selector to the input of the second circular electrical mobility selector. These selectors may be combined to be in parallel instead of in series. The charged particle selector can be used to make in-line measurement of the mass and/or density of aerosol particles, to make measurements of the size of the particles and/or their distribution as well as the distribution of aerosol electrical charges.