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:
Feb. 23, 2021
Filed:
Jun. 26, 2015
Inventure Renewables, Inc., Tuscaloosa, AL (US);
William W. Berry, Lakeland, FL (US);
William Rusty Sutterlin, Hoover, AL (US);
Mark G. Tegen, Gig Harbor, WA (US);
Cory Blanchard, Birmingham, AL (US);
Inventure Renewables Inc., Tuscaloosa, AL (US);
Abstract
In alternative embodiments, provided herein are methods and industrial processes for generating high purity (high alpha cellulose) pulp from lignocellulosic feedstocks, comprising directly contacting a lignocellulosic feedstock with a system comprising a super critical or near-super critical fluid or mixture of fluids, whereby the partial pressure of the system provides for the alcoholysis, hydrolysis or a combination thereof of the feedstock at reduced temperatures and pressures, followed by an upgrading step wherein a low-purity cellulosic material generated in the super critical or near-super critical reaction step is treated with an alkaline solution. Also provided herein are systems and methods for producing a high purity cellulose material using reduced amounts of alkaline material.