Patents by Inventor Zhaoyang Yuan

Zhaoyang Yuan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Economical methods for performing oxidative catalytic pretreatment of plant biomass using a single-stage two oxidant process
    Patent number: 11859145
    Abstract: An improved alkaline pretreatment of biomass is provided that is a single-stage, two oxidant alkaline oxidative pretreatment process. The process uses a homogenous catalyst with at least two oxidants (Hydrogen peroxide and enhanced levels of oxygen) in an alkaline environment to catalytically pretreat lignocellulosic biomass in a single-stage oxidation reaction. The provided single-stage alkaline-oxidative pretreatment improves biomass pretreatment and increase enzymatic digestibility to improve the economic feasibility of production of lignocellulose derived sugars.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: January 2, 2024
    Assignees: Board of Trustees of Michigan State University, Montana State University, Wisconsin Alumni Research Foundation
    Inventors: Eric L. Hegg, Zhaoyang Yuan, David B. Hodge, Shannon S. Stahl, Bryan D. Bals
  • ECONOMICAL METHODS FOR PERFORMING OXIDATIVE CATALYTIC PRETREATMENT OF PLANT BIOMASS USING A HOMOGENEOUS CATALYST SYSTEM
    Publication number: 20200332376
    Abstract: An improved alkaline pretreatment of biomass is provided that uses a homogenous catalyst with one or more metals and metal coordinating ligands, wherein the homogeneous catalyst is used with at least two oxidants in an oxidation reaction to catalytically pretreat lignocellulosic biomass. In one embodiment, hydrogen peroxide and oxygen are utilized as co-oxidants during alkaline-oxidative pretreatment to improve biomass pretreatment and increase enzymatic digestibility. In one embodiment, the homogenous catalyst is copper (II) 2,2?-bipyridine (Cu(bpy)). Related methods are also disclosed to improve the economic feasibility of production of lignocellulose derived sugars.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 22, 2020
    Inventors: Eric L. Hegg, Zhaoyang Yuan, David B. Hodge, Shannon S. Stahl, Bryan D. Bals