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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.:

US 12091818 B1

PDFFull Text
Date of Patent:
Sep. 17, 2024

Filed:

Mar. 23, 2021

Processes for producing nanocellulose, and nanocellulose compositions produced therefrom

Applicant:

Granbio Intellectual Property Holdings, Llc, Minnetrista, MN (US);

Inventors:

Kimberly Nelson, Atlanta, GA (US);

Theodora Retsina, Atlanta, GA (US);

Assignee:

GranBio Intellectual Property Holdings, LLC, Thomaston, GA (US);

Attorneys:

O'Connor & Company

Ryan P. O'Connor

Primary Examiner:

Anthony Calandra

Int. Cl.
CPC ...
D21C 9/00 (2006.01); C07G 1/00 (2011.01); C08B 15/08 (2006.01); C08B 37/00 (2006.01); C12P 7/10 (2006.01); D21B 1/06 (2006.01); D21B 1/12 (2006.01); D21B 1/14 (2006.01); D21C 1/02 (2006.01); D21C 5/00 (2006.01); D21C 11/00 (2006.01); D21H 11/16 (2006.01); D21H 11/18 (2006.01); C08H 8/00 (2010.01); C09K 8/10 (2006.01); C09K 8/34 (2006.01); C09K 8/64 (2006.01); C09K 8/68 (2006.01); C13K 1/02 (2006.01); D21C 3/00 (2006.01); D21C 3/06 (2006.01); D21C 9/10 (2006.01);
U.S. Cl.
CPC ...
D21C 9/007 (2013.01); C07G 1/00 (2013.01); C08B 15/08 (2013.01); C08B 37/0057 (2013.01); C12P 7/10 (2013.01); D21B 1/061 (2013.01); D21B 1/12 (2013.01); D21B 1/14 (2013.01); D21C 1/02 (2013.01); D21C 5/005 (2013.01); D21C 11/0007 (2013.01); D21H 11/16 (2013.01); D21H 11/18 (2013.01); C08H 8/00 (2013.01); C09K 8/10 (2013.01); C09K 8/34 (2013.01); C09K 8/64 (2013.01); C09K 8/68 (2013.01); C13K 1/02 (2013.01); D21C 3/003 (2013.01); D21C 3/006 (2013.01); D21C 3/06 (2013.01); D21C 9/10 (2013.01);
Abstract

Various processes are disclosed for producing nanocellulose materials following steam extraction or hot-water digestion of biomass. Processes are also disclosed for producing nanocellulose materials from a wide variety of starting pulps or pretreated biomass feedstocks. The nanocellulose materials may be used as rheology modifiers in many applications. Water-based and oil-based drilling fluid formulations and additives are provided. Also, water-based and oil-based hydraulic fracturing fluid formulations and additives are provided. In other embodiments, polymer-nanocellulose composites are provided.

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