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:
Dec. 17, 2002
Filed:
Mar. 14, 2000
Applicant:
Inventors:
Timo Hyvärinen, Oulu, FI;
Markku Känsäkoski, Kent, GB;
Markku Mäntylä, Kangasala, FI;
Jussi Tenhunen, Oulu, FI;
Assignee:
Metso Paper Automation Oy, Tampere, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/186 ;
U.S. Cl.
CPC ...
G01N 2/186 ;
Abstract
The invention relates to a method and an apparatus for measuring the properties of paper from a moving paper web in a paper machine. An infrared beam is directed to the paper web. The infrared beam, passed through or reflected from the paper web, is split into wavelength components with a spectrograph, and signals of the different wavelength components are measured, and the properties of paper are determined on the basis of the signals.