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:
Aug. 18, 1998
Filed:
Jul. 23, 1997
John P Downing, Jr, Port Townsend, WA (US);
Other;
Abstract
A suspended particle concentration monitor includes near and far detector circuits with near and far elements sensing scattered visible or near infrared radiation projected into a fluid volume in which particle concentration is determined. The spacing and characteristics of the light sensitive elements and the gains of the near and far detector circuits are selected to produce generally equal peak signals at separate particle concentrations. A computer contains three tables each containing particle concentrations in respective portions of the particle concentration range being monitored. Based upon analysis of the near and far detector signals, one of the tables is selected and used to find the particle concentration corresponding to one of the near and far detector signals.