Patents by Inventor David E. Hammond

David E. Hammond 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: 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: 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
  • Patent number: 6483807
    Abstract: Each switch along a call setup path in a network decides whether the call request should be upgraded from a non-flow-controlled service type to a flow-controlled service type. Each switch bases the decision on whether a boolean variable for the calling subscriber that appears in a management information base (MIB) is set to a value indicating that the subscriber is entitled to the upgrade. In addition, the upgrade is performed only if an interface on the route to the called party on which the call setup request is to be forwarded supports flow-controlled connections. When the call is to be upgraded, the switch replaces the service type indicator in the setup message with a value indicating a flow-controlled service type, and forwards the setup message toward the called subscriber.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: November 19, 2002
    Assignee: Fujitsu Network Communications, Inc.
    Inventors: Thomas A. Manning, David N. Peck, Robert Constantin, David E. Hammond, Andrew Michal, Stephen R. Veit
  • Patent number: 6198725
    Abstract: A system for allocating resources at network elements along a path through a communications network. Resources are allocated at a network element along the path in response to a connection request message. The delay budget is the minimum of a calculated cell transfer delay and a calculated cell delay variation. The calculated cell transfer delay is determined by finding a difference between a target end to end cell delay and an accumulated cell delay, and then dividing that difference by a number of network elements remaining in the path between the network element and the end of the path. To determine the calculated cell delay variation, the network element first finds a difference between the Max CDV QoS parameter and the sum of the accumulated cell delay variation and the switching delay for the network element. The calculated cell delay variation is then equal to that difference divided by the number of network elements remaining in the path between the network element and the end of the path.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: March 6, 2001
    Assignee: Fujitsu Network Communications, Inc.
    Inventors: Robert Constantin, David E. Hammond, David N. Peck, Salma Abu-Ayyash, Stephen R. Veit, Thomas A. Manning