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. 27, 2009
Filed:
Dec. 20, 2006
Thomas Ischdonat, Bachhagel, DE;
Pekka M. Typpo, Cupertino, CA (US);
Thomas Ischdonat, Bachhagel, DE;
Pekka M. Typpo, Cupertino, CA (US);
Voith Patent GmbH, Heidenheim, DE;
Abstract
A method for determining the quantity of coating applied to a material web includes directing radiation onto the material web coated with the coating, interacting the radiation with the coating, determining, using a measurement signal produced using the detected radiation, the quantity of the coating on and/or in the material web, and detecting the radiation, after its interaction, in various frequency bands to produce a specific measurement signal for each frequency band. The frequency bands include a frequency common to all frequency bands. The frequency bands are selected such that, with any given quantity of the applied coating, at least one of the specific measurement signals varies more with the structure of the applied coating than another of the specific measurement signals. The specific measurement signals of the various frequency bands are mathematically linked with each other to determine the quantity of the coating.