Patents by Inventor Timothy Lee Hilbert
Timothy Lee Hilbert 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).
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Patent number: 10053639Abstract: Methods are provided for dewaxing a distillate fuel boiling range feed to improve one or more cold flow properties of the distillate fuel feed, such as cloud point, where the distillate fuel feed is fractionated to produce both a jet fuel product and an arctic diesel fuel product. The decrease of cloud point is achieved by using a feedstock having a concentration of nitrogen of less than about 50 wppm and a concentration of sulfur of less than about 15 wppm. Further, the dewaxing catalyst may have a reduced content of hydrogenation metals, such as a content of Pt or Pd of from about 0.05 wt % to about 0.35 wt %. A distillate fuel feed can be dewaxed to achieve a desired cloud point differential using a reduced metals content dewaxing catalyst under the same or similar conditions to those required for a dewaxing catalyst with higher metals content.Type: GrantFiled: October 6, 2014Date of Patent: August 21, 2018Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Stuart S. Shih, Xiaochun Xu, William J. Novak, Carlos N. Lopez, Timothy Lee Hilbert, Stephen John McCarthy
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Patent number: 9487714Abstract: This invention relates to a process involving hydrocracking of a feedstream in which a converted fraction can exhibit relatively high distillate product yields and maintained or improved distillate fuel properties, while an unconverted fraction can exhibit improved properties particularly useful in the lubricant area. In this hydrocracking process, it can be advantageous for the yield of converted/unconverted product for gasoline fuel application to be reduced or minimized, relative to converted distillate fuel and unconverted lubricant. Catalysts and conditions can be chosen to assist in attaining, or to optimize, desirable product yields and/or properties.Type: GrantFiled: August 27, 2013Date of Patent: November 8, 2016Assignee: ExxonMobil Research and Engineering CompanyInventors: William J. Novak, Robert Allen Bradway, Stuart S. Shih, Timothy Lee Hilbert, Michel Daage
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Publication number: 20150122701Abstract: Methods are provided for dewaxing a distillate fuel boiling range feed to improve one or more cold flow properties of the distillate fuel feed, such as cloud point, where the distillate fuel feed is fractionated to produce both a jet fuel product and an arctic diesel fuel product. The decrease of cloud point is achieved by using a feedstock having a concentration of nitrogen of less than about 50 wppm and a concentration of sulfur of less than about 15 wppm. Further, the dewaxing catalyst may have a reduced content of hydrogenation metals, such as a content of Pt or Pd of from about 0.05 wt % to about 0.35 wt %. A distillate fuel feed can be dewaxed to achieve a desired cloud point differential using a reduced metals content dewaxing catalyst under the same or similar conditions to those required for a dewaxing catalyst with higher metals content.Type: ApplicationFiled: October 6, 2014Publication date: May 7, 2015Applicant: ExxonMobil Research and Engineering CompanyInventors: Stuart S. Shih, Xiaochun Xu, William J. Novak, Carlos N. Lopez, Timothy Lee Hilbert, Stephen John McCarthy
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Patent number: 8828218Abstract: This invention provides methods for multi-stage hydroprocessing treatment of FCC naphthas for improving the overall production quantity of naphtha boiling-range materials during naphtha production for low sulfur gasolines. Of particular benefit of the present processes is the selective treating of cat naphthas to remove gums instead of undercutting the overall naphtha pool by lowering the end cutpoints of the cat naphtha fraction. This maximizes the amount of refinery cat naphtha that can be directed to the gasoline blending pool while eliminating existing processing problems in hydrodesulfurization units. The processes disclosed herein have the additional benefit of minimizing octane losses in the increased naphtha pool volume.Type: GrantFiled: October 19, 2012Date of Patent: September 9, 2014Assignee: ExxonMobil Research and Engineering CompanyInventors: John Peter Greeley, Timothy Lee Hilbert, William Joseph Novak, Rohit Garg
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Publication number: 20130341243Abstract: This invention relates to a process involving hydrocracking of a feedstream in which a converted fraction can exhibit relatively high distillate product yields and maintained or improved distillate fuel properties, while an unconverted fraction can exhibit improved properties particularly useful in the lubricant area. In this hydrocracking process, it can be advantageous for the yield of converted/unconverted product for gasoline fuel application to be reduced or minimized, relative to converted distillate fuel and unconverted lubricant. Catalysts and conditions can be chosen to assist in attaining, or to optimize, desirable product yields and/or properties.Type: ApplicationFiled: August 27, 2013Publication date: December 26, 2013Applicant: ExxonMobil Research and EngineeringInventors: William J. Novak, Robert Allen Bradway, Stuart S. Shih, Timothy Lee Hilbert, Michel Daage
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Patent number: 8524069Abstract: The invention below shows a preferred method to make high quality base oil at unexpectedly high yields using a combination of hydrotreatment of high waxy feedstocks accompanied by hydroisomerization of the resulting wax to produce an extra high VI lube of greater than 140VI and at least ?18 deg C. pour point or less. The preferred combinations of conditions identified below can surprisingly lead to unexpectedly high yields. This allows the use of higher oil content (or lower wax content) feedstocks.Type: GrantFiled: February 20, 2009Date of Patent: September 3, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Eric D. Joseck, Timothy Lee Hilbert, Merryl J. Miranda, Jeenok Theresa Kim, Michael Brian Carroll, Bryan E. Steuer
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Patent number: 8377286Abstract: An integrated process for producing diesel fuel from feedstocks, including diesel fuel production under sour conditions, is provided. The ability to process feedstocks under higher sulfur and/or nitrogen conditions allows for reduced cost processing and increases the flexibility in selecting a suitable feedstock. In addition to the benefits in sour service, the process also returns to clean service activity levels more quickly.Type: GrantFiled: December 15, 2009Date of Patent: February 19, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Christopher Gordon Oliveri, Timothy Lee Hilbert, William Jospeh Novak, Stephen John McCarthy
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Patent number: 8366908Abstract: An integrated process for producing lubricant base oils from feedstocks under sour conditions is provided. The ability to process feedstocks under higher sulfur conditions allows for reduced cost processing and increases the flexibility in selecting a suitable feedstock. The sour feed can be delivered to a catalytic dewaxing step without any separation of sulfur and nitrogen contaminants, or a high pressure separation can be used to partially eliminate contaminants.Type: GrantFiled: December 23, 2009Date of Patent: February 5, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Krista Marie Prentice, Gary Paul Schleicher, Lei Zhang, Timothy Lee Hilbert, Michel A. Daage, Sylvain Hantzer, Wenyih F. Lai, David Mentzer, William Francis Heaney, Christine Nicole Elia, Shifang Luo, Stephen J. McCarthy, Mohan Kalyanaraman
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Publication number: 20110180453Abstract: In a catalytic dewaxing process, a catalyst comprising from 40 to 80 wt % of ZSM-48 having a silica to alumina molar ratio of less than 200:1 and from 0.3 to 1.5 wt % of a metal or metal compound from Groups 8 to 10 of the Periodic Table of the Elements is provided in a reaction zone. The catalyst is periodically contacted in the reaction zone under dewaxing conditions with a first hydrocarbon feedstock having a wax content of less than 50 wt % and with a second hydrocarbon feedstock having a wax content of 50 wt % or more.Type: ApplicationFiled: December 21, 2010Publication date: July 28, 2011Applicant: ExxonMobil Research and Engineering CompanyInventors: Christine Nicole Elia, Timothy Lee Hilbert, Louis F. Burns, Eric D. Joseck, Jeenok Theresa Kim, Sylvain S. Hantzer
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Publication number: 20100187156Abstract: An integrated process for producing lubricant base oils from feedstocks under sour conditions is provided. The ability to process feedstocks under higher sulfur conditions allows for reduced cost processing and increases the flexibility in selecting a suitable feedstock. The sour feed can be delivered to a catalytic dewaxing step without any separation of sulfur and nitrogen contaminants, or a high pressure separation can be used to partially eliminate contaminants.Type: ApplicationFiled: December 23, 2009Publication date: July 29, 2010Inventors: Krista Marie Prentice, Gary Paul Schleicher, Lei Zhang, Timothy Lee Hilbert, Michel A. Daage, Sylvain Hantzer, Wenyih F. Lai, David Mentzer, William Francis Heaney, Christine Nicole Elia, Shifang Luo, Stephen J. McCarthy, Mohan Kalyanaraman
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Publication number: 20090261015Abstract: The invention below shows a preferred method to make high quality base oil at unexpectedly high yields using a combination of hydrotreatment of high waxy feedstocks accompanied by hydroisomerization of the resulting wax to produce an extra high VI lube of greater than 140VI and at least ?18 deg C. pour point or less. The preferred combinations of conditions identified below can surprisingly lead to unexpectedly high yields. This allows the use of higher oil content (or lower wax content) feedstocks.Type: ApplicationFiled: February 20, 2009Publication date: October 22, 2009Inventors: Eric D. Joseck, Timothy Lee Hilbert, Merryl J. Miranda, Jeenok Theresa Kim, Michael Brian Carroll, Bryan E. Steuer