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:
Sep. 13, 1977
Filed:
Nov. 11, 1975
Applicant:
Inventor:
Vernon C Westcott, Lincoln, MA (US);
Assignee:
Trans-Sonics, Incorporated, Burlington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
356 38 ; 209214 ; 356 70 ; 356 72 ; 356 73 ; 356201 ; 356206 ;
Abstract
The concentrations of hyperfine particles in a fluid are monitored by flowing a predetermined quantity of the particle-containing fluid over a substrate in the presence of a force field which 'collects' the particles onto the substrate. The particles may be deposited on the substrate according to size, so that one can readily ascertain not only the particle concentration in the fluid, but the size distribution of the particles as well. This technique greatly concentrates the particles so that one can usually detect and monitor materials having extremely small particulate concentrations in the fluid from which they are collected.