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:
Nov. 11, 2003
Filed:
Jan. 05, 2001
Christian Herren, Rosshausern, CH;
Martin Monkewitz, Lucerne, CH;
Ruag Munition, Thun, CH;
Abstract
Modern techniques for manufacturing paper using mechanical wood pulp has lead to a persistent over-acidification of printed manner, and threatens to permanently destroy the same. This over-acidification can be neutralized by using an alkaline active substance whose main component is a salt having a relatively low water affinity. An alkaline deposit can be deposited on the paper by also using said alkaline active substance. A device suited for deacidification using this active substance comprises a case ( ) which can be closed. Printed matter which can be fanned out in a stand ( ) is treated in said case. The printed matter is treated by introducing the powdered active substance via a screw conveyor ( ) into an air stream circulated by a fan ( ), whereby the printed matter is leafed through in order to expose it to the active substance.