Patents by Inventor Darden Sinclair

Darden Sinclair 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).

  • Integrated hydroprocessing with high productivity catalysts
    Patent number: 8864976
    Abstract: Integrated hydroprocessing methods using high activity, low density catalysts are provided. The high activity catalysts allow for blocked operation when processing lube range feedstocks of widely varying characteristics, such as wax content, without having to substantially change the configuration or operating conditions of the process train. Instead, the different feedstocks can be accommodated by varying the reaction temperature in the process train.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: October 21, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Darden Sinclair, Michel Daage, Charles J. Mart, Louis Burns, Timothy L. Hilbert
  • Integrated hydroprocessing with high productivity catalysts
    Patent number: 8864975
    Abstract: Integrated hydroprocessing methods using high activity, low density catalysts are provided. The high activity catalysts allow for lower temperature operation, which reduces catalyst degradation, while the low density of the catalysts means a corresponding reduction in the amount of metal needed to fill a reactor volume. The methods allow for flexible processing of feedstocks with a variety of wax contents.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: October 21, 2014
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: Darden Sinclair, Michel Daage, Charles J. Mart, Louis Burns, Timothy L. Hilbert
  • Reformer distillate as gassing additive for transformer oils
    Patent number: 8298451
    Abstract: This invention relates to reformer distillates as gassing additives for transformer oils. The reformer distillates have a 1-ring and 2-ring aromatics content of at least 98%, and are added such that the transformer oil contains less than 10 wt % of reformer distillate. The invention also relates to a method for preparing transformer oils containing reformer distillates and having excellent gassing tendency, oxidative stability, viscosity and volatility.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: October 30, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: S. Darden Sinclair, Martin A. Krevalis, Dominick N. Mazzone, Jean-Luc Martin, Louis F. Burns
  • Hydroprocessing catalysts with low surface area binders
    Patent number: 8263517
    Abstract: Catalysts for dewaxing of hydrocarbon feeds, particularly feeds with elevated sulfur and nitrogen levels, are provided. The dewaxing catalysts include a zeolite with a low silica to alumina ratio combined with a low surface binder, or alternatively the formulated catalyst has a high ratio of zeolite surface area to external surface area.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: September 11, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Christine N. Elia, Mohan Kalyanaraman, Lei Zhang, Madhav Acharya, Michael A. Daage, Darden Sinclair, Jocelyn A. Kowalski, Jose G. Santiesteban, Ajit B. Dandekar
  • Multiple molecular sieve catalyst for sour service dewaxing
    Patent number: 8030240
    Abstract: Catalysts for dewaxing of hydrocarbon feeds, particularly feeds with elevated sulfur and nitrogen levels, are provided. The dewaxing catalysts include at least two zeolites, including a zeolite with a low silica to alumina ratio. The catalysts may be combined with a low surface binder, or alternatively the catalysts as formulated may have a high ratio of zeolite surface area to external surface area.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: October 4, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Christine N. Elia, Mohan Kalyanaraman, Lei Zhang, Michel A. Daage, Darden Sinclair, Valery Sokolovskii, David M. Lowe, Jun Han, Nicholas Ohler, Daniel M. Giaquinta, Anthony F. Volpe, Jr.
  • Multiple molecular sieve catalyst for sour service dewaxing
    Publication number: 20100075831
    Abstract: Catalysts for dewaxing of hydrocarbon feeds, particularly feeds with elevated sulfur and nitrogen levels, are provided. The dewaxing catalysts include at least two zeolites, including a zeolite with a low silica to alumina ratio. The catalysts may be combined with a low surface binder, or alternatively the catalysts as formulated may have a high ratio of zeolite surface area to external surface area.
    Type: Application
    Filed: December 18, 2008
    Publication date: March 25, 2010
    Inventors: Christine N. Elia, Mohan Kalyanaraman, Lei Zhang, Michel A. Daage, Darden Sinclair, Valery Sokolovskii, David M. Lowe, Jun Han, Nicholas Ohler, Daniel M. Giaquinta, Anthony F. Volpe, JR.
  • Reformer distillate as gassing additive for transformer oils
    Publication number: 20100059725
    Abstract: This invention relates to reformer distillates as gassing additives for transformer oils. The reformer distillates have a 1-ring and 2-ring aromatics content of at least 98%, and are added such that the transformer oil contains less than 10 wt % of reformer distillate. The invention also relates to a method for preparing transformer oils containing reformer distillates and having excellent gassing tendency, oxidative stability, viscosity and volatility.
    Type: Application
    Filed: September 3, 2009
    Publication date: March 11, 2010
    Inventors: S. Darden Sinclair, Martin A. Krevalis, Dominick N. Mazzone, Jean-Luc Martin, Louis F. Burns
  • Hydroprocessing catalysts with low surface area binders
    Publication number: 20090186754
    Abstract: Catalysts for dewaxing of hydrocarbon feeds, particularly feeds with elevated sulfur and nitrogen levels, are provided. The dewaxing catalysts include a zeolite with a low silica to alumina ratio combined with a low surface binder, or alternatively the formulated catalyst has a high ratio of zeolite surface area to external surface area.
    Type: Application
    Filed: December 18, 2008
    Publication date: July 23, 2009
    Inventors: Christine Elia, Mohan Kalyanaraman, Lei Zhang, Madhav Acharya, Michael A. Daage, Darden Sinclair, Jocelyn A. Kowalski, Jose G. Santiesteban, Ajit B. Dandekar
  • Integrated hydroprocessing with high productivity catalysts
    Publication number: 20090005627
    Abstract: Integrated hydroprocessing methods using high activity, low density catalysts are provided. The high activity catalysts allow for blocked operation when processing lube range feedstocks of widely varying characteristics, such as wax content, without having to substantially change the configuration or operating conditions of the process train. Instead, the different feedstocks can be accommodated by varying the reaction temperature in the process train.
    Type: Application
    Filed: June 13, 2008
    Publication date: January 1, 2009
    Inventors: Darden Sinclair, Michel Daage, Charles J. Mart, Louis Burns, Timothy L. Hilbert
  • Integrated hydroprocessing with high productivity catalysts
    Publication number: 20080314797
    Abstract: Integrated hydroprocessing methods using high activity, low density catalysts are provided. The high activity catalysts allow for lower temperature operation, which reduces catalyst degradation, while the low density of the catalysts means a corresponding reduction in the amount of metal needed to fill a reactor volume. The methods allow for flexible processing of feedstocks with a variety of wax contents.
    Type: Application
    Filed: June 13, 2008
    Publication date: December 25, 2008
    Inventors: Darden Sinclair, Michel Daage, Charles J. Mart, Louis Burns, Timothy L. Hilbert