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:
Oct. 28, 2014
Filed:
Mar. 17, 2010
Thomas Q. HU, Vancouver, CA;
Ali Hayek, Burnaby, CA;
Thomas Q. Hu, Vancouver, CA;
Ali Hayek, Burnaby, CA;
FPInnovations, Pointe-Claire, Quebec, CA;
Abstract
A molecule possessing a primary or secondary amino group and an additional functionality capable of providing a novel or improved property to a cellulose material has been permanently attached to the cellulose material in aqueous media using a water-soluble carbodiimide as the coupling agent/activator. One such molecule is 5-aminofluorescein (abbreviated as 'A-fluo') and one such cellulose material is a papermaking pulp. Papers made from a pulp furnish containing, for example, 0.01 wt. % of the 'A-fluo'-attached pulp show an embedded marker feature authenticable upon UV or visible light excitation. The “A-fluo”-attached pulp can also be used for the marking and identification of a pulp furnish.