Patents by Inventor Christopher T. Hamilton

Christopher T. Hamilton 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).

  • Process for the preparation of 2-amino-5,8-dimethoxy[1,2,4]triazolo[1,5-c]pyrimidine from 4-amino-2,5-dimethoxypyrimidine
    Patent number: 9115135
    Abstract: 5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 4-amino-2,5-dialkoxypyrimidines in an improved process in which the generation of gaseous by-products is controlled by the continuous addition of hydroxylamine as a free base.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: August 25, 2015
    Assignee: Dow AgroSciences LLC
    Inventors: Douglas C. Bland, Christopher T. Hamilton
  • Process for the preparation of 2-amino-5,8-dimethoxy[1,2,4]triazolo[1,5-c]pyrimidine from 4-chloro-2,5-dimethoxypyrimidine
    Patent number: 9000160
    Abstract: 2-Amino-5,8-dialkoxy[1,2,4]-triazolo[1,5-c]pyrimidines are manufactured from 4-chloro-2,5-dialkoxypyrimidines in a process that avoids hydrazine and cyanogen halide.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: April 7, 2015
    Assignee: Dow AgroSciences LLC
    Inventors: Douglas C. Bland, Gary Roth, Craig Bott, Christopher T. Hamilton, Joseph Neuman
  • Composite membrane with coating comprising polyalkylene oxide and biguanide-type compounds
    Patent number: 8733558
    Abstract: Composite membranes including a coating of polyalkylene oxide and biguanide compounds along with various methods for making and using the same. In one embodiment, the composite membrane comprises a thin film polyamide layer including a coating of a reaction product of a polyalkylene oxide compound and a biguanide-type compound. In another embodiment, the coating comprises a polymer including alkylene oxide repeating units and one or more biguanide functional groups.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: May 27, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: William E. Mickols, Chunming Zhang, Christopher T. Hamilton
  • PROCESS FOR THE PREPARATION OF 2-AMINO-5,8-DIMETHOXY[1,2,4]TRIAZOLO[1,5-c]PYRIMIDINE FROM 4-AMINO-2,5-DIMETHOXYPYRIMIDINE
    Publication number: 20140081024
    Abstract: 5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 4-amino-2,5-dialkoxypyrimidines in an improved process in which the generation of gaseous by-products is controlled by the continuous addition of hydroxylamine as a free base.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 20, 2014
    Applicant: Dow AgroSciences LLC
    Inventors: Douglas C. Bland, Christopher T. Hamilton
  • PROCESS FOR THE PREPARATION OF 2-AMINO-5,8-DIMETHOXY[1,2,4]TRIAZOLO[1,5-c]PYRIMIDINE FROM 4-CHLORO-2,5-DIMETHOXYPYRIMIDINE
    Publication number: 20140081023
    Abstract: 2-Amino-5,8-dialkoxy[1,2,4]-triazolo[1,5-c]pyrimidines are manufactured from 4-chloro-2,5-dialkoxypyrimidines in a process that avoids hydrazine and cyanogen halide.
    Type: Application
    Filed: September 10, 2013
    Publication date: March 20, 2014
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Douglas C. Bland, Gary Roth, Craig Bott, Christopher T. Hamilton, Joseph Neuman
  • Composite membrane with coating comprising polyalkylene oxide and imidazol compounds
    Patent number: 8646616
    Abstract: Composite membranes including a coating comprising a combination of polyalkylene oxide and imidazol compounds along with various methods for making and using the same. In one embodiment, the composite membrane comprises a thin film polyamide layer including a coating of a reaction product of a polyalkylene oxide compound and an imidazol compound. In another embodiment, the coating comprises a polymer including alkylene oxide repeating units and one or more imidazol functional groups.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: February 11, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: William E. Mickols, Chunming Zhang, Christopher T. Hamilton
  • Composite membrane including coating of polyalkylene oxide and triazine compounds
    Patent number: 8640886
    Abstract: Composite membranes including a coating of polyalkylene oxide and triazine compounds along with various methods for making and using the same. In one embodiment, the composite membrane comprises a thin film polyamide layer including a coating of a reaction product of a polyalkylene oxide compound and a triazine compound.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: February 4, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: William E. Mickols, Chunming Zhang, Christopher T. Hamilton
  • Process for the preparation of 5-substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines
    Patent number: 8338596
    Abstract: 5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 2-substituted-4-amino-5-methoxypyrimidines in a process that avoids hydrazine and cyanogen halide.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: December 25, 2012
    Assignee: Dow Agrosciences LLC
    Inventors: Craig Bott, Christopher T. Hamilton, Gary Alan Roth
  • PROCESS FOR THE PREPARATION OF 5-SUBSTITUTED-8-ALKOXY[1,2,4]TRIAZOLO[1,5-c]PYRIMIDIN-2-AMINES
    Publication number: 20120088913
    Abstract: 5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 2-substituted-4-amino-5-methoxypyrimidines in a process that avoids hydrazine and cyanogen halide.
    Type: Application
    Filed: December 14, 2011
    Publication date: April 12, 2012
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Craig Bott, Christopher T. Hamilton, Gary A. Roth
  • Process for the preparation of 5-substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines
    Patent number: 8143395
    Abstract: 5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 2-substituted-4-amino-5-methoxypyrimidines in a process that avoids hydrazine and cyanogen halide.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: March 27, 2012
    Assignee: Dow AgroSciences LLC
    Inventors: Craig Bott, Christopher T. Hamilton, Gary Alan Roth
  • PROCESS FOR THE PREPARATION OF 5-SUBSTITUTED-8-ALKOXY[1,2,4]TRIAZOLO[1,5-c]PYRIMIDIN-2-AMINES
    Publication number: 20110295003
    Abstract: 5-Substituted-8-alkoxy[1,2,4]triazolo[1,5-c]pyrimidin-2-amines are manufactured from 2-substituted-4-amino-5-methoxypyrimidines in a process that avoids hydrazine and cyanogen halide.
    Type: Application
    Filed: May 24, 2011
    Publication date: December 1, 2011
    Applicant: DOW AGROSCIENCES LLC
    Inventors: Craig Bott, Christopher T. Hamilton, Gary A. Roth
  • COMPOSITE MEMBRANE WITH COATING COMPRISING POLYALKYLENE OXIDE AND IMIDAZOL COMPOUNDS
    Publication number: 20110284454
    Abstract: Composite membranes including a coating comprising a combination of polyalkylene oxide and imidazol compounds along with various methods for making and using the same. In one embodiment, the composite membrane comprises a thin film polyamide layer including a coating of a reaction product of a polyalkylene oxide compound and an imidazol compound. In another embodiment, the coating comprises a polymer including alkylene oxide repeating units and one or more imidazol functional groups.
    Type: Application
    Filed: February 23, 2011
    Publication date: November 24, 2011
    Inventors: William E. Mickols, Chunming Zhang, Christopher T. Hamilton
  • COMPOSITE MEMBRANE WITH COATING COMPRISING POLYALKYLENE OXIDE AND BIGUANIDE-TYPE COMPOUNDS
    Publication number: 20110284458
    Abstract: Composite membranes including a coating of polyalkylene oxide and biguanide compounds along with various methods for making and using the same. In one embodiment, the composite membrane comprises a thin film polyamide layer including a coating of a reaction product of a polyalkylene oxide compound and a biguanide-type compound. In another embodiment, the coating comprises a polymer including alkylene oxide repeating units and one or more biguanide functional groups.
    Type: Application
    Filed: February 23, 2011
    Publication date: November 24, 2011
    Inventors: William E. Mickols, Chunming Zhang, Christopher T. Hamilton
  • COMPOSITE MEMBRANE INCLUDING COATING OF POLYALKYLENE OXIDE AND TRIAZINE COMPOUNDS
    Publication number: 20110259817
    Abstract: Composite membranes including a coating of polyalkylene oxide and triazine compounds along with various methods for making and using the same. In one embodiment, the composite membrane comprises a thin film polyamide layer including a coating of a reaction product of a polyalkylene oxide compound and a triazine compound.
    Type: Application
    Filed: February 23, 2011
    Publication date: October 27, 2011
    Inventors: William E. Mickols, Chunming Zhang, Christopher T. Hamilton
  • 3-(substituted phenyl)-5-thienyl-1,2,4-triazole compounds with activity against whitefly
    Patent number: 6265424
    Abstract: 3-(Substituted phenyl)-5-(thienyl)-1,2,4-triazole compounds are useful as insecticides and acaricides.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: July 24, 2001
    Assignee: Dow AgroSciences LLC
    Inventors: Francis E. Tisdell, James T. Pechacek, Vidyadhar B. Hegde, Joe R. Schoonover, Jr., Leonard P. Dintenfass, James M. Gifford, Maurice C. Yap, Donald H. DeVries, Christopher T. Hamilton, Norman R. Pearson, Mary L. Ash
  • 3-(substituted phenyl)-5-(thienyl or furyl)-1, 2, 4-triazole compounds
    Patent number: 6015826
    Abstract: 3-(Substituted phenyl)-5-(thienyl or furyl)-1,2,4-triazole compounds are useful as insecticides and acaricides. New synthetic procedures and intermediates for preparing the compounds, pesticide compositions containing the compounds, and methods of controlling insects and mites using the compounds are also provided.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: January 18, 2000
    Inventors: James T. Pechacek, Donald H. DeVries, Francis E. Tisdell, Robert G. Suhr, Peter L. Johnson, Christopher J. Hatton, Maurice Chee Hoong Yap, Gary D. Stockdale, Christopher T. Hamilton, George W. Johnson
  • Substituted benzoxazinone cyclohexanediones and their herbicidal uses
    Patent number: 5399542
    Abstract: The present disclosure is directed to substituted cyclohexanedione compounds, the preparation of said compounds, compositions containing said compounds and the use of said compositions in the selective pre- and postemergent kill and control of grassy weeds in the presence of various broad-leafed and grassy crop plants.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: March 21, 1995
    Assignee: DowElanco
    Inventors: Christopher T. Hamilton, Lowell D. Markley, Todd C. Geselius
  • Substituted pyridyl-cyclohexanediones and their herbicidal uses
    Patent number: 5013352
    Abstract: The present disclosure is directed to substituted cyclohexanedione compounds, the preparation of said compounds, compositions containing said compounds and the use of said compositions in the selective pre- and postemergent kill and control of grassy weeds in the presence of various crop plants.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: May 7, 1991
    Assignee: DowElanco
    Inventors: Lowell D. Markley, Christopher T. Hamilton, Beth A. Swisher, Jacob Secor
  • Substituted cyclohexanediones and their herbicidal uses
    Patent number: 5006159
    Abstract: The present disclosure is directed to substituted cyclohexanedione compounds, the preparation of said compounds, compositions containing said compounds and the use of said compositions in the selective pre- and postemergent kill and control of grassy weeds in the presence of various crop plants.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: April 9, 1991
    Assignee: DowElanco
    Inventors: Lowell D. Markley, Christopher T. Hamilton, Beth A. Swisher, Jacob Secor
  • Substituted cyclohexanediones and their herbicidal use
    Patent number: 4983211
    Abstract: The present disclosure is directed to substituted cyclohexanedione compounds, the preparation of said compounds, compositions containing said compounds and the use of said compositions in the selective pre- and postemergent kill and control of grassy weeds in the presence of various crop plants.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: January 8, 1991
    Assignee: DowElanco
    Inventors: Lowell D. Markley, Christopher T. Hamilton, Beth A. Swisher, Jacob Secor