Patents by Inventor Gregory W. Welsch

Gregory W. Welsch 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).

  • Patent number: 9856391
    Abstract: A process for preparing a starch dispersion may include combining a feed starch and an aqueous liquid to form a starch slurry. The starch slurry may be subjected to a first degradation treatment to form a first mixture. A temperature of the starch slurry during the first degradation treatment may be less than a gelation temperature. The first mixture may be heated to a temperature between the gelation temperature and a solubilization temperature. The heated first mixture may be subjected to a second degradation treatment to form a second mixture. The second mixture may be sheared to form the starch dispersion.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: January 2, 2018
    Assignee: TRINSEO EUROPE GMBH
    Inventors: Gregory W. Welsch, Giona Kilcher, Pekka Johannes Salminen, David L. Church, Dustin E. Burton, David E. Hammond
  • Patent number: 9695551
    Abstract: In one or more embodiments, the present disclosure provides for a process for preparing a dispersion of starch particles in an aqueous liquid. In one or more embodiments, the process includes introducing a feed starch and the aqueous liquid into a rotor stator mixer, maintaining the feed starch and the aqueous liquid in the rotor stator mixer at a temperature ranging from a gelation temperature to less than a solubilization temperature, and shearing the feed starch into starch particles with the rotor stator mixer to form the dispersion of starch particles in the aqueous liquid. In one or more embodiments, the starch particles produced by this process have an average particle size diameter of no larger than 2 micrometers and the dispersion has 20 to 65 weight percent of the starch particles based on a total weight of the dispersion.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: July 4, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Gregory W. Welsch, Brian J. Ninness, Michael D. Read, Timothy J. Young, Michal E. Matteucci, David E. Hammond, Liang Hong, Donald K. Ervick, Jr.
  • Publication number: 20160333525
    Abstract: In one or more embodiments, the present disclosure provides for a process for preparing a dispersion of starch particles in an aqueous liquid. In one or more embodiments, the process includes introducing a feed starch and the aqueous liquid into a rotor stator mixer, maintaining the feed starch and the aqueous liquid in the rotor stator mixer at a temperature ranging from a gelation temperature to less than a solubilization temperature, and shearing the feed starch into starch particles with the rotor stator mixer to form the dispersion of starch particles in the aqueous liquid. In one or more embodiments, the starch particles produced by this process have an average particle size diameter of no larger than 2 micrometers and the dispersion has 20 to 65 weight percent of the starch particles based on a total weight of the dispersion.
    Type: Application
    Filed: July 26, 2016
    Publication date: November 17, 2016
    Applicant: Dow Global Technologies LLC
    Inventors: Gregory W. Welsch, Brian J. Ninness, Michael D. Read, Timothy J. Young, Michal E. Matteucci, David E. Hammond, Liang Hong, Donald K. Ervick, JR.
  • Patent number: 9422669
    Abstract: In one or more embodiments, the present disclosure provides for a process for preparing a dispersion of starch particles in an aqueous liquid. In one or more embodiments, the process includes introducing a feed starch and the aqueous liquid into a rotor stator mixer, maintaining the feed starch and the aqueous liquid in the rotor stator mixer at a temperature ranging from a gelation temperature to less than a solubilization temperature, and shearing the feed starch into starch particles with the rotor stator mixer to form the dispersion of starch particles in the aqueous liquid. In one or more embodiments, the starch particles produced by this process have an average particle size diameter of no larger than 2 micrometers and the dispersion has 20 to 65 weight percent of the starch particles based on a total weight of the dispersion.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: August 23, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Gregory W. Welsch, Brian J. Ninness, Michael D. Read, Timothy J. Young, Michal E. Matteucci, David E. Hammond, Liang Hong, Donald K. Ervick, Jr.
  • Publication number: 20160046819
    Abstract: A process for preparing a starch dispersion may include combining a feed starch and an aqueous liquid to form a starch slurry. The starch slurry may be subjected to a first degradation treatment to form a first mixture. A temperature of the starch slurry during the first degradation treatment may be less than a gelation temperature. The first mixture may be heated to a temperature between the gelation temperature and a solubilization temperature. The heated first mixture may be subjected to a second degradation treatment to form a second mixture. The second mixture may be sheared to form the starch dispersion.
    Type: Application
    Filed: April 10, 2014
    Publication date: February 18, 2016
    Applicant: TRINSEO EUROPE GmbH
    Inventors: Gregory W. WELSCH, Giona KILCHER, Pekka Johannes SALMINEN, David L. CHURCH, Dustin E. BURTON, David E. HAMMOND
  • Patent number: 9068062
    Abstract: A process for the preparation of a dispersion of starch in an hydroxylic liquid, the process comprising introducing a feed starch and an hydroxylic liquid to an extruder, and applying shear forces in the extruder to the starch and the liquid under conditions sufficient to prepare a stable dispersion of starch particles in the hydroxylic liquid.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: June 30, 2015
    Inventors: Gregory W. Welsch, Michael D. Read, John A. Roper, III, Brian J. Ninness, Evelyn L. Wilson
  • Patent number: 8637155
    Abstract: In one or more embodiments, the present disclosure provides for a process for preparing a dispersion of starch particles in an aqueous liquid. In one or more embodiments, the process includes introducing a feed starch and the aqueous liquid into a rotor stator mixer, maintaining the feed starch and the aqueous liquid in the rotor stator mixer at a temperature ranging from a gelation temperature to less than a solubilization temperature, and shearing the feed starch into starch particles with the rotor stator mixer to form the dispersion of starch particles in the aqueous liquid. In one or more embodiments, the starch particles produced by this process have an average particle size diameter of no larger than 2 micrometers and the dispersion has 20 to 65 weight percent of the starch particles based on a total weight of the dispersion.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: January 28, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Gregory W. Welsch, Brian J. Ninness, Michael D. Read, Timothy J. Young, Michal E. Matteucci, David E. Hammond, Liang Hong, Donald K. Ervick, Jr.
  • Publication number: 20130000514
    Abstract: A process for the preparation of a dispersion of starch in an hydroxylic liquid, the process comprising introducing a feed starch and an hydroxylic liquid to an extruder, and applying shear forces in the extruder to the starch and the liquid under conditions sufficient to prepare a stable dispersion of starch particles in the hydroxylic liquid.
    Type: Application
    Filed: December 2, 2010
    Publication date: January 3, 2013
    Inventors: Gregory W. Welsch, Michael D. Read, John A. Roper, III, Brian J. Ninness, Evelyn L. Wilson
  • Publication number: 20110300394
    Abstract: In one or more embodiments, the present disclosure provides for a process for preparing a dispersion of starch particles in an aqueous liquid. In one or more embodiments, the process includes introducing a feed starch and the aqueous liquid into a rotor stator mixer, maintaining the feed starch and the aqueous liquid in the rotor stator mixer at a temperature ranging from a gelation temperature to less than a solubilization temperature, and shearing the feed starch into starch particles with the rotor stator mixer to form the dispersion of starch particles in the aqueous liquid. In one or more embodiments, the starch particles produced by this process have an average particle size diameter of no larger than 2 micrometers and the dispersion has 20 to 65 weight percent of the starch particles based on a total weight of the dispersion.
    Type: Application
    Filed: June 6, 2011
    Publication date: December 8, 2011
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Gregory W. Welsch, Brian J. Ninness, Michael D. Read, Timothy J. Young, Michal E. Matteucci, David E. Hammond, Liang Hong