Patents by Inventor Christopher T. Burns

Christopher T. Burns 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).

  • PROCESSES FOR ISOLATION AND RECOVERY OF C5 SUGARS
    Publication number: 20210071273
    Abstract: The presently disclosed subject matter relates to processes for isolating xylose from an aqueous solution. A representative process can comprise providing an aqueous solution comprising xylose; combining a boron compound with the aqueous solution to form a boron derivative of the xylose; isolating the boron derivative of the xylose from the aqueous solution as a precipitate; dissolving the boron derivative of the xylose in a solvent; and isolating the xylose from the solvent as a precipitate using a boron capture agent.
    Type: Application
    Filed: December 11, 2018
    Publication date: March 11, 2021
    Inventors: Christopher T. Burns, Jagannadh Satyavolu, Michael H. Nantz
  • Process for isolating C5 sugars from biomass hydrolyzate
    Patent number: 10407453
    Abstract: Provided are processes for isolating hemicellulose-based sugar from a biomass. The process includes providing a biomass hydrolyzate including a C5 sugar, forming a boronic ester or diester of the C5 sugar, extracting the boronic ester of diester of the C5 sugar, precipitating the C5 sugar using a boron capture agent, and isolating the C5 sugar from the precipitate. The isolated C5 sugar is provided in dry form.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: September 10, 2019
    Assignee: University of Louisville Research Foundation, Inc.
    Inventors: Jagannadh Satyavolu, Sadakatali S. Gori, Michael H. Nantz, Mandapati V. Ramakrishnam Raju, Christopher T. Burns
  • PROCESS FOR ISOLATING C5 SUGARS FROM BIOMASS HYDROLYZATE
    Publication number: 20160297845
    Abstract: Provided are processes for isolating hemicellulose-based sugar from a biomass. The process includes providing a biomass hydrolyzate including a C5 sugar, forming a boronic ester or diester of the C5 sugar, extracting the boronic ester of diester of the C5 sugar, precipitating the C5 sugar using a boron capture agent, and isolating the C5 sugar from the precipitate. The isolated C5 sugar is provided in dry form.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 13, 2016
    Inventors: Jagannadh SATYAVOLU, Sadakatali S. GORI, Michael H. Nantz, Ramakrishnam Raju MANDAPATI, Christopher T. BURNS
  • Method and apparatus for preparing nitride semiconductor surfaces
    Patent number: 6745717
    Abstract: Semiconductor nitride layers are produced using a corona discharge supersonic free-jet source producing an activated nitrogen molecule beam impacting a semiconductor substrate in the presence of a group III metal or impacting an oxide layer on a semiconductor substrate. The activated nitrogen molecules are of the form N2A3&Sgr;u+. Apparatus for producing the nitride layer on the substrate includes the corona discharge free-jet source, a skimmer to collimate the N2 beam and succeeding stages interconnected by collimators and evacuated to draw off background gases.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: June 8, 2004
    Assignee: Arizona Board of Regents
    Inventors: R. Bruce Doak, Christopher T. Burns, Dirk C. Jordan
  • Method and apparatus for preparing nitride semiconductor surfaces
    Publication number: 20020123239
    Abstract: Semiconductor nitride layers are produced using a corona discharge supersonic free-jet source producing an activated nitrogen molecule beam impacting a semiconductor substrate in the presence of a group III metal or impacting an oxide layer on a semiconductor substrate. The activated nitrogen molecules are of the form N2A3&Sgr;u+. Apparatus for producing the nitride layer on the substrate includes the corona discharge free-jet source, a skimmer to collimate the N2 beam and succeeding stages interconnected by collimators and evacuated to draw off background gases.
    Type: Application
    Filed: June 22, 2001
    Publication date: September 5, 2002
    Inventors: R. Bruce Doak, Christopher T. Burns, Dirk C. Jordan