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. 04, 2011
Filed:
Feb. 18, 2005
Theodoor M. Slaghek, Rotterdam, NL;
Mario T. R. Van Wandelen, Zeist, NL;
Willem C. Drost, Zeist, NL;
Dario M. R. Lo Cascio, Ouderkerk aan de Amstel, NL;
Remco W. G. Van Willige, Apeldoorn, NL;
Willem Huijser, Rotterdam, NL;
Theodoor M. Slaghek, Rotterdam, NL;
Mario T. R. van Wandelen, Zeist, NL;
Willem C. Drost, Zeist, NL;
Dario M. R. Lo Cascio, Ouderkerk aan de Amstel, NL;
Remco W. G. van Willige, Apeldoorn, NL;
Willem Huijser, Rotterdam, NL;
Abstract
The invention relates to the use of a particulate material derived from mammalian hair in the preparation of a paper or paperboard product, which particulate material has been prepared by means of a process, which comprises the following steps: (a) subjecting mammalian hair to an oxidation treatment in which the hair is contacted with a solution, which comprises a bleaching agent; (b) separating the oxidised hair from the solution; (c) drying the separated hair; and (d) subjecting the dried hair to a treatment in which the hair is formed into a particulate material having an average particle size in the range of from 0.5 to 4 mm. The invention further relates to a paper or paperboard product, or paper pulp comprising said particulate material.