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. 30, 2005
Filed:
Apr. 26, 2002
Thomas Attenberger, Poing, DE;
Gerhard Stenzel, Munich, DE;
Ralf Soltau, Moosach, DE;
Manfred Hutmann, Planegg, DE;
Thomas Attenberger, Poing, DE;
Gerhard Stenzel, Munich, DE;
Ralf Soltau, Moosach, DE;
Manfred Hutmann, Planegg, DE;
Giesecke & Devrient GmbH, Munich, DE;
Abstract
A method and apparatus for incorporating feature substances into a still moist but already sufficiently consolidated paper web provides for directing a feature substance suspension onto the surface of the paper web as a laminar jet with low jet pressure. A special pressure control circuit ensures that the jet pressure is always constant regardless of the number of parallel feature substance suspension jets directed onto the paper web. This makes it possible to incorporate a great variety of line codings in paper under the same process conditions without any visible changes in fiber structure occurring in the paper.