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US Patent 11312977 Pretreatment with lignosulfonic acid

Patent 11312977 was granted and assigned to Iogen Corporation on April, 2022 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors

Is a

Patent attributes

Patent Applicant

Iogen Corporation

Current Assignee

Iogen Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

Patent Inventor Names

Jeffrey S. Tolan0

Brian Foody0

Daniel G. MacDonald0

Date of Patent

April 26, 2022

Patent Application Number

17040738

Date Filed

November 9, 2018

Patent Citations

US Patent 10655149 Pretreatment of lignocellulosic biomass with sulfur dioxide and/or sulfurous acid

US Patent 10662455 Sulfur dioxide and/or sulfurous acid pretreatment

US Patent 11008598 Process comprising acid pretreatment and enzymatic hydrolysis

US Patent 10995314 Sulfur dioxide and/or sulfurous acid pretreatment with sulfur dioxide recovery

0

US Patent 10144939 Process for enzymatic hydrolysis of lignocellulosic material and fermentation of sugars

0

US Patent 10316336 Systems and methods for continuously fermenting C5 and C6 saccharides

US Patent 10421667 Process for treating lignocellulosic feedstock comprising wet oxidation

US Patent 10513714 Lignocellulosic conversion process comprising sulfur dioxide and/or sulfurous acid pretreatment

0

...

Patent Primary Examiner

Richard C Ekstrom

A process for converting lignocellulosic biomass to glucose or ethanol includes subjecting the lignocellulosic biomass to a lignosulfonic acid pretreatment, wherein the lignosulfonic acid has a concentration of sulfonate groups in acid form that is greater than 0.02 mol/L and a total amount of sulfur dioxide is greater than 15 wt % based on dry weight of lignocellulosic biomass.

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