Patents by Inventor Halou Oumar-Mahamat

Halou Oumar-Mahamat 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).

  • Publication number: 20170183595
    Abstract: A lubricating oil base stock including one or more monoesters represented by the formula (I), (II), (III) and (IV) as defined herein. The lubricating oil base stock has a high temperature high shear (HTHS) viscosity of less than about 1.7 cP as determined by ASTM D4683, and a Noack volatility from about 15 to about 90 percent as determined by ASTM D5800. A lubricating oil containing the lubricating oil base stock including one or more monoesters represented by the formula (I), (II), (III) and (IV) as defined herein. A method for improving one or more of thermal and oxidative stability, solubility and dispersancy of polar additives, deposit control and traction control in a lubricating oil by using as the lubricating oil a formulated oil containing the lubricating oil base stock including one or more monoesters represented by the formula (I), (II), (III) and (IV) as defined herein.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 29, 2017
    Inventors: Man Kit Ng, Halou Oumar-Mahamat, Hong Cheng, David A. Blain, Kathleen K. Cooper, James T. Carey, Michael R. Douglass, Percy R. Kanga, Abhimanyu O. Patil, Satish Bodige, Kyle G. Lewis, Mark P. Hagemeister
  • Publication number: 20170183597
    Abstract: A composition including one or more diester compounds represented by the formula as defined herein. The composition has a viscosity (Kv100) from about 1 cSt to about 10 cSt at 100° C. as determined by ASTM D445, a viscosity index (VI) from about ?100 to about 300 as determined by ASTM D2270, and a Noack volatility of no greater than 50 percent as determined by ASTM D5800. A process for producing the composition, a lubricating oil base stock and lubricating oil containing the composition, and a method for improving one or more of thermal and oxidative stability, solubility and dispersancy of polar additives, deposit control and traction control in a lubricating oil by using as the lubricating oil a formulated oil containing the composition.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 29, 2017
    Inventors: Man Kit Ng, Halou Oumar-Mahamat, Hong Cheng, David A. Blain
  • Publication number: 20170137721
    Abstract: Methods are provided for producing Group II base stocks having high viscosity and also having one or more properties indicative of a high quality base stock. The resulting Group II base stocks can have a viscosity at 100° C. and/or a viscosity at 40° C. that is greater than the corresponding viscosity for a conventional Group II base stock. Additionally, the resulting Group II base stocks can have one or more properties that are indicative of a high quality base stock.
    Type: Application
    Filed: October 24, 2016
    Publication date: May 18, 2017
    Inventors: Suzzy C.H. Ho, Charles L. Baker, JR., Shuji Luo, Halou Oumar-Mahamat
  • Publication number: 20170137733
    Abstract: Methods are provided for producing Group III base stocks having high viscosity and also having one or more properties indicative of a high quality base stock. The resulting Group III base stocks can have a viscosity at 100° C. and/or a viscosity at 40° C. that is greater than the corresponding viscosity for a conventional Group III base stock. Additionally, the resulting Group III base stocks can have one or more properties that are indicative of a high quality base stock.
    Type: Application
    Filed: October 24, 2016
    Publication date: May 18, 2017
    Inventors: Suzzy C.H. Ho, Charles L. Baker, JR., Shuji Luo, Halou Oumar-Mahamat
  • Publication number: 20170137726
    Abstract: Methods are provided for producing Group I base stocks having high viscosity and also having one or more properties indicative of a high quality base stock. The resulting Group I base stocks can have a viscosity at 100° C. and/or a viscosity at 40° C. that is greater than the corresponding viscosity for a conventional Group I bright stock formed by solvent processing. Additionally, the resulting Group I base stocks can have one or more properties that are indicative of a high quality base stock.
    Type: Application
    Filed: October 24, 2016
    Publication date: May 18, 2017
    Inventors: Suzzy C.H. Ho, Charles L. Baker, JR., Shuji Luo, Halou Oumar-Mahamat
  • Publication number: 20170137734
    Abstract: A composition that includes one or more compounds represented by the formula R1—O—R2 wherein R1 is a substituted or unsubstituted aryl or polyaryl group having from about 4 to about 40 carbon atoms, and R2 is a substituted or unsubstituted, linear or branched, alkyl group having from about 4 to about 40 carbon atoms. The composition has a viscosity (Kv100) from about 1 to about 10 cSt at 100° C. as determined by ASTM D-445, a viscosity index (VI) from about ?100 to about 300 as determined by ASTM D-2270, and a Noack volatility of no greater than 50 percent as determined by ASTM D-5800. The disclosure also relates to a process for producing the composition, a lubricating oil base stock and lubricating oil containing the composition, and a method of reducing boundary friction and improving dispersancy of polar additives of a lubricating oil by using as the lubricating oil a formulated oil containing the composition.
    Type: Application
    Filed: October 19, 2016
    Publication date: May 18, 2017
    Inventors: Abhimanyu O. Patil, Satish Bodige, Shuji Luo, Shane Deighton, Halou Oumar-Mahamat
  • Publication number: 20160152914
    Abstract: Methods are provided for producing lubricant base oils from petrolatum. After solvent dewaxing of a brightstock raffinate to form a brightstock base oil, petrolatum is generated as a side product. The petrolatum can be hydroprocessed to form base oils in high yield. The base oils formed from hydroprocessing of petrolatum have an unexpected pour point relationship. For a typical lubricant oil feedstock, the pour point of the base oils generated from the feedstock increases with the viscosity of the base oil. By contrast, lubricant base oils formed from hydroprocessing of petrolatum have a relatively flat pour point relationship, and some of the higher viscosity base oils unexpectedly have lower pour points than lower viscosity base oils generated from the same petrolatum feed. The base oils from petrolatum are also unusual in yielding both high viscosity and high viscosity index and can be generated while maintaining a high yield.
    Type: Application
    Filed: February 9, 2016
    Publication date: June 2, 2016
    Inventors: Jeenok T. Kim, Gary P. Schleicher, Halou Oumar-Mahamat, Chad H. Mondor
  • Patent number: 9284500
    Abstract: Methods are provided for producing lubricant base oils from petrolatum. After solvent dewaxing of a brightstock raffinate to form a brightstock base oil, petrolatum is generated as a side product. The petrolatum can be hydroprocessed to form base oils in high yield. The base oils formed from hydroprocessing of petrolatum have an unexpected pour point relationship. For a typical lubricant oil feedstock, the pour point of the base oils generated from the feedstock increases with the viscosity of the base oil. By contrast, lubricant base oils formed from hydroprocessing of petrolatum have a relatively flat pour point relationship, and some of the higher viscosity base oils unexpectedly have lower pour points than lower viscosity base oils generated from the same petrolatum feed. The base oils from petrolatum are also unusual in yielding both high viscosity and high viscosity index and can be generated while maintaining a high yield.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: March 15, 2016
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Jeenok T. Kim, Gary Paul Schleicher, Halou Oumar-Mahamat, Chad Hinden Mondor
  • Publication number: 20140262944
    Abstract: Methods are provided for producing lubricant base oils from petrolatum. After solvent dewaxing of a brightstock raffinate to form a brightstock base oil, petrolatum is generated as a side product. The petrolatum can be hydroprocessed to form base oils in high yield. The base oils formed from hydroprocessing of petrolatum have an unexpected pour point relationship. For a typical lubricant oil feedstock, the pour point of the base oils generated from the feedstock increases with the viscosity of the base oil. By contrast, lubricant base oils formed from hydroprocessing of petrolatum have a relatively flat pour point relationship, and some of the higher viscosity base oils unexpectedly have lower pour points than lower viscosity base oils generated from the same petrolatum feed. The base oils from petrolatum are also unusual in yielding both high viscosity and high viscosity index and can be generated while maintaining a high yield.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 18, 2014
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Jeenok T. Kim, Gary Paul Schleicher, Halou Oumar-Mahamat, Chad Hinden Mondor
  • Publication number: 20140163285
    Abstract: A process of catalytically cracking a feedstock based on a biocomponent contacts the feedstock with a catalytic cracking catalyst comprising a basic metal oxide on a porous oxide support at an elevated cracking temperature to eliminate oxygen from the biocomponent to form cracked hydrocarbon residues. The basic metal oxide of the cracking catalyst is preferably a metal oxide of Group 2 of the Periodic Table (IUPAC) such as calcium or magnesium on a support comprised of a non-acidic form of alumina such as gibbsite or boehmite. Preferred feedstocks are those based on triglycerides, especially vegetable oils, animal fats and algae oils.
    Type: Application
    Filed: November 8, 2013
    Publication date: June 12, 2014
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: John Scott Buchanan, Halou Oumar-Mahamat, Wayne Richard Kliewer
  • Patent number: 8704020
    Abstract: Biomass based feeds are processed under hydrothermal treatment conditions, e.g., to produce a hydrocarbon liquid product and a solids portion. The hydrothermal treatment is performed in the presence of a dissolved catalyst or catalyst precursor. The presence of the dissolved catalyst or catalyst precursor can modify the nature of the hydrocarbon products produced from the hydrothermal treatment.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: April 22, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Virginia M. Roberts, Michel Daage, James R. Bielenberg, Paul J. Berlowitz, Paul D. Oldenburg, David C. Long, Halou Oumar-Mahamat
  • Patent number: 8704019
    Abstract: Biomass based feeds are processed under hydrothermal treatment conditions to produce a hydrocarbon liquid product and a solids portion. The hydrothermal treatment is performed in the presence of catalyst particles. The presence of the heterogeneous catalyst can modify the nature of the hydrocarbon products produced from the hydrothermal treatment. After the hydrothermal treatment, the catalyst particles can be separated from the algae-based solids, to allow for recycle of the catalyst particles.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: April 22, 2014
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: Paul D. Oldenburg, Virginia M. Roberts, Michel Daage, Paul J. Berlowitz, David C. Long, Halou Oumar-Mahamat
  • Patent number: 8624070
    Abstract: Biomass based feeds are processed under hydrothermal treatment conditions to produce a hydrocarbon liquid product and a solids portion. The solids portion can contain a portion of the phosphorus from the biomass feed. The amount of phosphorus in the solids portion can be increased for some biomass feeds by adding a multivalent metal to the feed. The phosphorus from the solids portion can be recycled for further use, such as for growth of additional biomass.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: January 7, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Paul D. Oldenburg, James R. Bielenberg, Virginia M. Roberts, Halou Oumar-Mahamat, Peter J. Domaille
  • Patent number: 8487148
    Abstract: Biomass based feeds are processed under hydrothermal treatment conditions, e.g., to produce a hydrocarbon liquid product and a solids portion. The hydrothermal treatment can be performed in the presence of heterogeneous catalyst particles that can optionally include a catalyst metal or metal salt. The presence of the heterogeneous catalyst can modify the nature of the hydrocarbon products produced from the hydrothermal treatment.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: July 16, 2013
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Virginia M. Roberts, Michel Daage, Paul D. Oldenburg, James R. Bielenberg, Paul J. Berlowitz, David C. Long, Halou Oumar-Mahamat
  • Publication number: 20120130141
    Abstract: Biomass based feeds are processed under hydrothermal treatment conditions to produce a hydrocarbon liquid product and a solids portion. The hydrothermal treatment is performed in the presence of catalyst particles. The presence of the heterogeneous catalyst can modify the nature of the hydrocarbon products produced from the hydrothermal treatment. After the hydrothermal treatment, the catalyst particles can be separated from the algae-based solids, to allow for recycle of the catalyst particles.
    Type: Application
    Filed: October 31, 2011
    Publication date: May 24, 2012
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Paul D. Oldenburg, Virginia M. Roberts, Michel Daage, Paul J. Berlowitz, David C. Long, Halou Oumar-Mahamat
  • Publication number: 20120101319
    Abstract: Biomass based feeds are processed under hydrothermal treatment conditions, e.g., to produce a hydrocarbon liquid product and a solids portion. The hydrothermal treatment is performed in the presence of a dissolved catalyst or catalyst precursor. The presence of the dissolved catalyst or catalyst precursor can modify the nature of the hydrocarbon products produced from the hydrothermal treatment.
    Type: Application
    Filed: October 31, 2011
    Publication date: April 26, 2012
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Virginia M. ROBERTS, Michel DAAGE, James R. BIELENBERG, Paul J. BERLOWITZ, Paul D. OLDENBURG, David C. LONG, Halou OUMAR-MAHAMAT
  • Publication number: 20120096762
    Abstract: Biomass based feeds are processed under hydrothermal treatment conditions to produce a hydrocarbon liquid product and a solids portion. The solids portion can contain a portion of the phosphorus from the biomass feed. The amount of phosphorus in the solids portion can be increased for some biomass feeds by adding a multivalent metal to the feed. The phosphorus from the solids portion can be recycled for further use, such as for growth of additional biomass.
    Type: Application
    Filed: October 31, 2011
    Publication date: April 26, 2012
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Paul D. OLDENBURG, James R. BIELENBERG, Virginia M. ROBERTS, Halou OUMAR-MAHAMAT, Peter J. DOMAILLE
  • Publication number: 20120094879
    Abstract: Biomass based feeds are processed under hydrothermal treatment conditions, e.g., to produce a hydrocarbon liquid product and a solids portion. The hydrothermal treatment can be performed in the presence of heterogeneous catalyst particles that can optionally include a catalyst metal or metal salt. The presence of the heterogeneous catalyst can modify the nature of the hydrocarbon products produced from the hydrothermal treatment.
    Type: Application
    Filed: October 31, 2011
    Publication date: April 19, 2012
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Virginia M. ROBERTS, Michel DAAGE, Paul D. OLDENBURG, James R. BIELENBERG, Paul J. BERLOWITZ, David C. LONG, Halou OUMAR-MAHAMAT
  • Patent number: 8034754
    Abstract: The invention relates to lubricants which contain a phosphorus to nitrogen ratio of ?1.0 and a sulfur content of >1.4 wt. %. The phosphorus contribution is primarily from an acid phosphate species and the sulfur content is primarily from an antiwear agent. This lubricant composition has been found to provide exceptional protection to new gears or “green gears”, during the break-in phase.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: October 11, 2011
    Assignee: The Lubrizol Corporation
    Inventors: William T. Sullivan, Halou Oumar-Mahamat, Ellen Bernice Brandes
  • Publication number: 20110143982
    Abstract: The invention concerns an additive package for a lubricating fluid or grease containing an effective amount of a phosphorus-containing antiwear additive, the improvement comprising the absence of primary, secondary, tertiary, cyclic low molecular weight aliphatic amines with a carbon number of C30 or less.
    Type: Application
    Filed: February 24, 2011
    Publication date: June 16, 2011
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: William T. Sullivan, Halou Oumar-Mahamat, Shi-Ming Wu, Ellen B. Brandes