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:
Apr. 23, 2002
Filed:
Jan. 05, 2000
Applicant:
Inventor:
Steven Perry Sturm, Dublin, OH (US);
Assignee:
ABB Automation Inc., Columbus, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/306 ;
U.S. Cl.
CPC ...
G01N 2/306 ;
Abstract
A method and system for on-line measurements of mineral additives in or on a paper web utilizing shaped spectrum x-rays and solid-state PIN detectors. Each of three detectors are cover by a filter used to shape the spectrums of x-rays received by the detectors. The filters are selected to maximize sensitivity differences between detectors for the desired detectable mineral additives. A computer processes signals from the detectors and from basis weight and moisture measuring instruments to determine total mineral content, and the individual amounts of mineral additives in or on (e.g. coating) the paper web.