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:
Jun. 28, 2011
Filed:
Jun. 01, 2005
Edwin Nun, Billerbeck, DE;
Volker Hennige, Duelmen, DE;
Uwe Paulmann, Luedinghusen, DE;
Hannelore Armoneit, Recklinghausen, DE;
Sigrid Banken, Dorsten, DE;
Marie-theres Wilkes, Dorsten, DE;
Norbert Kern, Haltern, DE;
Christian Herkt-bruns, Muenster, DE;
Thomas Schrief, Haltern am See, DE;
Eckart Berendes, Marl, DE;
Edwin Nun, Billerbeck, DE;
Volker Hennige, Duelmen, DE;
Uwe Paulmann, Luedinghusen, DE;
Hannelore Armoneit, Recklinghausen, DE;
Sigrid Banken, Dorsten, DE;
Marie-Theres Wilkes, Dorsten, DE;
Norbert Kern, Haltern, DE;
Christian Herkt-Bruns, Muenster, DE;
Thomas Schrief, Haltern am See, DE;
Eckart Berendes, Marl, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
The present invention relates to a sealed natural cut stone, the pores of which are permeable to water vapor but are impermeable to aqueous liquids, and a method for the production thereof and the use of such natural cut stones.