Patents by Inventor Alan Duncan James

Alan Duncan James 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).

  • Method for producing bituminous coatings with reduced tackiness
    Patent number: 9745480
    Abstract: A method renders the surface of bitumen materials to be non-tacky, and minimize or eliminate the loss of the bitumen materials to traffic. The method may also be used on top of prime coat and fog seal, to reduce tackiness of bitumen materials from cured bitumen emulsions, and to decrease unnecessary and unwanted tracking by passing traffic.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: August 29, 2017
    Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Qiong Zhou, Alan Duncan James, Ralph Franklin, Christine Cornelia Gorsuch
  • Method for Producing Bituminous Coatings With Reduced Tackiness
    Publication number: 20170073531
    Abstract: The method according to the present invention renders the surface of bitumen materials to be non-tacky, and minimize or eliminate the loss of the bitumen materials to traffic. The method according to the present invention may also be used on top of prime coat and fog seal, to reduce tackiness of bitumen materials from cured bitumen emulsions, and to decrease unnecessary and unwanted tracking by passing traffic.
    Type: Application
    Filed: June 11, 2015
    Publication date: March 16, 2017
    Inventors: Qiong Zhou, Alan Duncan James, Ralph Franklin, Christine Cornelia Gorsuch
  • Bitumen emulsion containing polyaluminum compounds
    Patent number: 9422453
    Abstract: The invention relates to an additive for a bitumen emulsion, which is a specific mixture of alkoxyiated compounds with low and high amounts of alkylene oxide units, in combination with a polyaluminum compound. Using this additive it is possible to prepare an aqueous slow-setting bitumen emulsion-aggregate mix suitable for cold paving of roads, parking places, sidewalks, and the like.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: August 23, 2016
    Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Daniel Hagberg, Dennis Selse, Alan Duncan James
  • Bitumen Emulsion Containing Polyaluminum Compounds
    Publication number: 20150267080
    Abstract: The invention relates to an additive for a bitumen emulsion, which is a specific mixture of alkoxyiated compounds with low and high amounts of alkylene oxide units, in combination with a polyaluminum compound. Using this additive it is possible to prepare an aqueous slow-setting bitumen emulsion-aggregate mix suitable for cold paving of roads, parking places, sidewalks, and the like.
    Type: Application
    Filed: November 26, 2013
    Publication date: September 24, 2015
    Inventors: Daniel Hagberg, Dennis Selse, Alan Duncan James
  • Asphalt modifiers for “warm mix” applications including adhesion promoter
    Patent number: 8840717
    Abstract: The present invention generally relates to an additive package for warm-mix asphalt formulations for the pavement of road surfaces, said additive package comprising a) surfactant component, and b) an asphalt rheology modifying component, wherein said asphalt rheology modifying component comprises at least one of a i) a wax component and ii) a resin component. The invention also relates to a warm mix asphalt having improved compaction at lower temperatures, and to a pavement made from said warm mix asphalt.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: September 23, 2014
    Assignee: Akzo Nobel N.V.
    Inventors: Premnathan Naidoo, Sundaram Logaraj, Alan Duncan James
  • Polyamide emulsifier based on polyamines and fatty acid/carboxylic acid for oil based drilling fluid applications
    Patent number: 8765644
    Abstract: The present invention generally relates to emulsifiers for oil-based drilling fluids and muds comprising an emulsifier based on the polyamides derived from fatty acid/carboxylic acid and optionally alkoxylated polyamines. The invention also relates to oil or synthetic based drilling fluids comprising the emulsifiers of the invention and to drilling methods utilizing same.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: July 1, 2014
    Assignee: Akzo Nobel N.V.
    Inventors: Hua Yu, Dale Stanley Steichen, Alan Duncan James, Jon B. Staley, Thomas William Himmel
  • Adhesion and cohesion modifiers for asphalt
    Patent number: 8741052
    Abstract: The present invention relates to a bitumen or asphalt formulation for the pavement of road surfaces, said formulation comprising a mixture of bitumen and aggregates, and an additive package evenly distributed therein, said additive package comprising from about i) 10 to 60% by weight of an amine or modified amine surfactant, ii) from about 20 to 90% of an asphalt rheology modifying component.
    Type: Grant
    Filed: February 18, 2013
    Date of Patent: June 3, 2014
    Assignee: Akzo Nobel N.V.
    Inventors: Premnathan Naidoo, Sundaram Logaraj, Alan Duncan James
  • Asphalt modifiers for "warm mix" applications including adhesion promoter
    Publication number: 20130239850
    Abstract: The present invention generally relates to an additive package for warm-mix asphalt formulations for the pavement of road surfaces, said additive package comprising a) surfactant component, and b) an asphalt rheology modifying component, wherein said asphalt rheology modifying component comprises at least one of a i) a wax component and ii) a resin component. The invention also relates to a warm mix asphalt having improved compaction at lower temperatures, and to a pavement made from said warm mix asphalt.
    Type: Application
    Filed: May 2, 2013
    Publication date: September 19, 2013
    Applicant: AKZO NOBEL N.V.
    Inventors: Premnathan NAIDOO, Sundaram LOGARAJ, Alan Duncan JAMES
  • Asphalt modifiers for “warm mix” applications including adhesion promoter
    Patent number: 8440011
    Abstract: The present invention generally relates to an additive package for warm-mix asphalt formulations for the pavement of road surfaces, said additive package comprising a) surfactant component, and b) an asphalt rheology modifying component, wherein said asphalt rheology modifying component comprises at least one of a i) a wax component and ii) a resin component. The invention also relates to a warm mix asphalt having improved compaction at lower temperatures, and to a pavement made from said warm mix asphalt.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: May 14, 2013
    Assignee: Akzo Nobel N.V.
    Inventors: Premnathan Naidoo, Sundaram Logaraj, Alan Duncan James
  • Adhesion and cohesion modifiers for asphalt
    Patent number: 8404037
    Abstract: The present invention relates to a bitumen or asphalt formulation for the pavement of road surfaces, said formulation comprising a mixture of bitumen and aggregates, and an additive package evenly distributed therein, said additive package comprising from about i) 10 to 60% by weight of an amine or modified amine surfactant, ii) from about 20 to 90% of an asphalt rheology modifying component.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: March 26, 2013
    Assignee: Akzo Nobel N.V.
    Inventors: Premnathan Naidoo, Sundaram Logaraj, Alan Duncan James
  • Adhesion and cohesion modifiers for asphalt
    Patent number: 8377189
    Abstract: The present invention relates to a bitumen or asphalt formulation for the pavement of road surfaces, said formulation comprising a mixture of bitumen and aggregates, and an additive package evenly distributed therein, said additive package comprising from about i) 10 to 60% by weight of an amine or modified amine surfactant, ii) from about 20 to 90% of an asphalt rheology modifying component.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: February 19, 2013
    Assignee: Akzo Nobel N.V.
    Inventors: Premnathan Naidoo, Sundaram Logaraj, Alan Duncan James
  • Polyamide Emulsifier Based on Polyamines and Fatty Acid/Carboxylic Acid for Oil Based Drilling Fluid Applications
    Publication number: 20110306523
    Abstract: The present invention generally relates to emulsifiers for oil-based drilling fluids and muds comprising an emulsifier based on the polyamides derived from fatty acid/carboxylic acid and optionally alkoxylated polyamines. The invention also relates to oil or synthetic based drilling fluids comprising the emulsifiers of the invention and to drilling methods utilizing same.
    Type: Application
    Filed: May 12, 2009
    Publication date: December 15, 2011
    Inventors: Hua Yu, Dale Stanley Steichen, Alan Duncan James, Jon B. Staley, Thomas William Himmel
  • Asphalt modifiers for "warm mix" applications including adhesion promoter
    Publication number: 20100319577
    Abstract: The present invention generally relates to an additive package for warm-mix asphalt formulations for the pavement of road surfaces, said additive package comprising a) surfactant component, and b) an asphalt rheology modifying component, wherein said asphalt rheology modifying component comprises at least one of a i) a wax component and ii) a resin component. The invention also relates to a warm mix asphalt having improved compaction at lower temperatures, and to a pavement made from said warm mix asphalt.
    Type: Application
    Filed: November 11, 2008
    Publication date: December 23, 2010
    Applicant: Akzo Nobel N.V.
    Inventors: Premnathan Naidoo, Sundaram Logaraj, Alan Duncan James
  • ADHESION AND COHESION MODIFIERS FOR ASPHALT
    Publication number: 20100199885
    Abstract: The present invention relates to a bitumen or asphalt formulation for the pavement of road surfaces, said formulation comprising a mixture of bitumen and aggregates, and an additive package evenly distributed therein, said additive package comprising from about i) 10 to 60% by weight of an amine or modified amine surfactant, ii) from about 20 to 90% of an asphalt rheology modifying component.
    Type: Application
    Filed: July 24, 2008
    Publication date: August 12, 2010
    Applicant: AKZO NOBEL N.V.
    Inventors: Premnathan Naidoo, Sundaram Logaraj, Alan Duncan James