Back to results
US 10,519,605 B2Granted
Method of marking cellulosic products
AssigneeApdn (B.V.I.) Inc.
InventorsLawrence Jung, Michael E. Hogan, Ming Hwa Benjamin Liang
Life of this patent
Estimating the term…
Abstract
Methods for marking cellulosic products, including cellulosic fibers such as lyocell and cellulosic films, including methods for marking such products with a detectable nucleic acid marker to identify and validate the origin or authenticity of the products or items manufactured using such products. Detectably-marked cellulosic products marked with nucleic acid markers for authentication, validation and tracking are also provided.
Claims11
A method of authenticating a cellulosic product, comprising:
- adding a detectable nucleic acid marker to a cellulosic medium prior to or during a spinning step or prior to or during a filming step of processing of a cellulosic product, said cellulosic medium containing wood pulp and at least one chemical selected from the group consisting of carbon disulfide, sodium hydroxide or N-methylmorpholine-N-oxide (NMMO);
- and
- thereby incorporating the detectable nucleic acid marker into the cellulosic product to provide a nucleic acid-marked cellulosic product;
- introducing the nucleic acid-marked cellulosic product into a stream of commerce;
- detecting the presence of the detectable nucleic acid marker in the cellulosic product via dissolving all or a portion of the nucleic acid-marked cellulosic product into a solution and performing a PCR based detection technique on a sample of said solution;
- and
- thereby authenticating the cellulosic product.
4 more elements
A method of marking a cellulosic product for authentication, comprising:
- adding a detectable DNA marker to a cellulosic medium prior to or during a spinning step or prior to or during a filming step of processing of a cellulosic product, said cellulosic medium containing wood pulp and at least one chemical selected from the group consisting of carbon disulfide, sodium hydroxide or N-methylmorpholine-N-oxide (NMMO), and wherein the DNA marker is complexed with at least one protecting agent chosen from the group consisting of non-aromatic alkyl amines, aromatic (triphenyl) alkyl amines, or biological amines;
- and
- thereby incorporating and embedding the detectable DNA marker throughout the cellulosic product to provide a DNA-marked cellulosic product.
Dependencies are inferred from the claim text.