Patents by Inventor Howard Steven Lacheen
Howard Steven Lacheen 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: 11753355Abstract: Described herein is a base oil synthesis via ionic catalyst oligomerization further utilizing a hydrophobic process for removing an ionic catalyst from a reaction mixture with a silica gel composition, specifically a reaction mixture comprising an oligomerization reaction to produce PAO utilizing an ionic catalyst wherein the ionic catalyst is removed post reaction.Type: GrantFiled: April 30, 2020Date of Patent: September 12, 2023Assignee: CHEVRON U.S.A. INC.Inventors: Howard Steven Lacheen, Hye-Kyung Cho Timken
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Publication number: 20220041526Abstract: Described herein is a base oil synthesis via ionic catalyst oligomerization further utilizing a hydrophobic process for removing an ionic catalyst from a reaction mixture with a silica gel composition, specifically a reaction mixture comprising an oligomerization reaction to produce PAO utilizing an ionic catalyst wherein the ionic catalyst is removed post reaction.Type: ApplicationFiled: April 30, 2020Publication date: February 10, 2022Inventors: Howard Steven LACHEEN, Hye-Kyung Cho TIMKEN
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Patent number: 10913659Abstract: A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-114, is provided. SSZ-114 can be synthesized by treating an aluminogermanosilicate molecular sieve of CTH framework topology with water or an aqueous solution of a mineral acid under conditions sufficient to degermanate at least a portion of aluminogermanosilicate molecular sieve to form a degermanated molecular sieve and calcining the degermanated molecular sieve under conditions sufficient to convert the degermanated molecular sieve to SSZ-114. Molecular sieve SSZ-114 may be used in organic compound conversion reactions and/or sorptive processes.Type: GrantFiled: June 23, 2020Date of Patent: February 9, 2021Assignee: CHEVRON U.S.A. INC.Inventors: Christopher Michael Lew, Stacey Ian Zones, Dan Xie, Howard Steven Lacheen, Tao Wei
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Publication number: 20200171471Abstract: An aluminosilicate molecular sieve of STW framework type, designated herein as SSZ-110, and having a molar ratio of SiO2/Al2O3 of less than 100, is provided. SSZ-110 may be synthesized using an organic structure directing agent selected from one or more of 1,4-bis(2,3-dimethyl-1H-imidazolium)butane dications, 1,5-bis(2,3-dimethyl-1H-imidazolium)pentane dications, and 1,6-bis(2,3-dimethyl-1H-imidazolium)hexane dications. SSZ-110 may be used in organic compound conversion reactions and sorptive processes.Type: ApplicationFiled: January 29, 2020Publication date: June 4, 2020Inventors: Stacey Ian Zones, Tracy Margaret Davis, Dan Xie, Cong-Yan Chen, Howard Steven Lacheen
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Patent number: 10589260Abstract: An aluminosilicate molecular sieve of STW framework type, designated herein as SSZ-110, and having a molar ratio of SiO2/Al2O3 of less than 100, is provided. SSZ-110 may be synthesized using an organic structure directing agent selected from one or more of 1,4-bis(2,3-dimethyl-1H-imidazolium)butane dications, 1,5-bis(2,3-dimethyl-1H-imidazolium)pentane dications, and 1,6-bis(2,3-dimethyl-1H-imidazolium)hexane dications. SSZ-110 may be used in organic compound conversion reactions and sorptive processes.Type: GrantFiled: January 21, 2019Date of Patent: March 17, 2020Assignee: CHEVRON U.S.A. INC.Inventors: Stacey Ian Zones, Tracy Margaret Davis, Dan Xie, Cong-Yan Chen, Howard Steven Lacheen
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Publication number: 20190224655Abstract: An aluminosilicate molecular sieve of STW framework type, designated herein as SSZ-110, and having a molar ratio of SiO2/Al2O3 of less than 100, is provided. SSZ-110 may be synthesized using an organic structure directing agent selected from one or more of 1,4-bis(2,3-dimethyl-1H-imidazolium)butane dications, 1,5-bis(2,3-dimethyl-1H-imidazolium)pentane dications, and 1,6-bis(2,3-dimethyl-1H-imidazolium)hexane dications. SSZ-110 may be used in organic compound conversion reactions and sorptive processes.Type: ApplicationFiled: January 21, 2019Publication date: July 25, 2019Inventors: Stacey Ian Zones, Tracy Margaret Davis, Dan Xie, Cong-Yan Chen, Howard Steven Lacheen
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Patent number: 10167200Abstract: A method is disclosed for synthesizing zincoaluminosilicate molecular sieve SSZ-41 having high aluminum content from a combined source of silicon oxide and aluminum oxide selected from one or more a FAU framework type zeolite and a colloidal aluminosilicate.Type: GrantFiled: October 11, 2017Date of Patent: January 1, 2019Assignee: Chevron U.S.A. Inc.Inventors: Stacey Ian Zones, Cong-Yan Chen, Howard Steven Lacheen, Kaustav Chaudhuri
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Patent number: 10113963Abstract: An integrated system for monitoring a chemical concentration in an ionic liquid, comprising: a. an online FTIR instrument with an ATR window; b. a sample conditioning station that removes light hydrocarbons and produces a degassed ionic liquid that is analyzed by FTIR; and c. a solvent flushing system that flows solvent across the ATR window. Also, a process for monitoring the chemical concentration, comprising: a. degassing the ionic liquid in the sample conditioning station; b. passing the degassed ionic liquid over an ATR window; c. periodically redirecting a flow of the degassed ionic liquid via a bypass line or an on-off valve that isolates the ATR window from the process unit that elutes the ionic liquid; and d. flowing a solvent and a purging gas over the ATR window during the periodically redirecting step c); and e. resuming the passing of the degassed ionic liquid over the ATR window.Type: GrantFiled: June 26, 2018Date of Patent: October 30, 2018Assignee: Chevron U.S.A. Inc.Inventors: Huping Luo, Hye-Kyung Cho Timken, Toni Zhang Miao, Howard Steven Lacheen, Bi-Zeng Zhan
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Patent number: 10094778Abstract: An integrated system for monitoring a chemical concentration in an ionic liquid, comprising: a. an online FTIR instrument with an ATR window; b. a sample conditioning station that removes light hydrocarbons and produces a degassed ionic liquid that is analyzed by FTIR; and c. a solvent flushing system that flows solvent across the ATR window. Also, a process for monitoring the chemical concentration, comprising: a. degassing the ionic liquid in the sample conditioning station; b. passing the degassed ionic liquid over an ATR window; c. periodically redirecting a flow of the degassed ionic liquid via a bypass line or an on-off valve that isolates the ATR window from the process unit that elutes the ionic liquid; and d. flowing a solvent and a purging gas over the ATR window during the periodically redirecting step c); and e. resuming the passing of the degassed ionic liquid over the ATR window.Type: GrantFiled: June 2, 2017Date of Patent: October 9, 2018Assignee: Chevron U.S.A. Inc.Inventors: Huping Luo, Hye-Kyung Cho Timken, Toni Zhang Miao, Howard Steven Lacheen, Bi-Zeng Zhan
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Patent number: 10010877Abstract: A process has been developed for preparing a Fischer-Tropsch catalyst precursor and a Fischer-Tropsch catalyst made from the precursor. The process includes preparing a catalyst precursor by contacting a boehmite material with a stabilizer containing vanadium-phosphorus. The boehmite material includes two or more different crystalline boehmites having the same average crystallite size to the nearest whole nanometer and having differing properties selected from surface area, pore volume, density and combinations thereof. The boehmite material is subjected to at least one heat treatment at a temperature of at least 500° C., either before or after the contacting step to obtain a stabilized catalyst support having a pore volume of at least 0.3 cc/g. A catalytic metal or a compound containing cobalt is applied to the stabilized catalyst support to form the catalyst precursor. Finally, the catalyst precursor is reduced to activate the catalyst precursor to obtain the Fischer Tropsch catalyst.Type: GrantFiled: June 14, 2016Date of Patent: July 3, 2018Assignee: Chevron U.S.A. Inc.Inventors: Kandaswamy Jothimurugesan, Howard Steven Lacheen, Mark Muraoka
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Publication number: 20180162738Abstract: A method is disclosed for synthesizing zincoaluminosilicate molecular sieve SSZ-41 having high aluminum content from a combined source of silicon oxide and aluminum oxide selected from one or more a FAU framework type zeolite and a colloidal aluminosilicate.Type: ApplicationFiled: October 11, 2017Publication date: June 14, 2018Inventors: Stacey Ian Zones, Cong-Yan Chen, Howard Steven Lacheen, Kaustav Chaudhuri
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Publication number: 20170354960Abstract: A process has been developed for preparing a Fischer-Tropsch catalyst precursor and a Fischer-Tropsch catalyst made from the precursor. The process includes preparing a catalyst precursor by contacting a boehmite material with a stabilizer containing vanadium-phosphorus. The boehmite material includes two or more different crystalline boehmites having the same average crystallite size to the nearest whole nanometer and having differing properties selected from surface area, pore volume, density and combinations thereof. The boehmite material is subjected to at least one heat treatment at a temperature of at least 500° C., either before or after the contacting step to obtain a stabilized catalyst support having a pore volume of at least 0.3 cc/g. A catalytic metal or a compound containing cobalt is applied to the stabilized catalyst support to form the catalyst precursor. Finally, the catalyst precursor is reduced to activate the catalyst precursor to obtain the Fischer Tropsch catalyst.Type: ApplicationFiled: June 14, 2016Publication date: December 14, 2017Inventors: Kandaswamy Jothimurugesan, Howard Steven Lacheen, Mark Muraoka
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Patent number: 9839897Abstract: We provide a catalytic process to reduce an organic halide in a hydrocarbon, comprising: a. producing the hydrocarbon comprising the organic halide in a process unit; and b. contacting the hydrocarbon comprising the organic halide with a metal chloride under anhydrous conditions in a halide removal vessel to produce a contacted hydrocarbon having from 50-100 wt % of a total halide in the hydrocarbon removed. We also provide an apparatus for performing this process.Type: GrantFiled: May 30, 2013Date of Patent: December 12, 2017Assignee: Chevron U.S.A. Inc.Inventor: Howard Steven Lacheen
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Patent number: 9815043Abstract: This application provides an apparatus for making a hydrocarbon with a reduced amount of an organic halide, comprising: a. a process unit comprising an effluent port, that produces and discharges the hydrocarbon comprising the organic halide; and b. a halide removal vessel with an inlet that feeds the hydrocarbon from the process unit, wherein the halide removal vessel comprises an anhydrous metal chloride and in which the hydrocarbon comprising the organic halide is contacted with the anhydrous metal chloride under anhydrous conditions to produce a contacted hydrocarbon having from 50-100 wt % of a total halide in the hydrocarbon removed.Type: GrantFiled: April 20, 2015Date of Patent: November 14, 2017Assignee: Chevron U.S.A. Inc.Inventor: Howard Steven Lacheen
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Patent number: 9687826Abstract: Provided is a Fischer Tropsch catalyst prepared according to a process comprising: a. preparing a catalyst precursor by: i. impregnating an alumina catalyst support material with a first solution comprising ammonium metavanadate and phosphoric acid, to obtain a treated catalyst support material; ii. calcining the treated catalyst support material at a temperature of at least 500° C. to obtain a modified catalyst support having a modified support surface area and a pore volume of at least 0.4 cc/g; wherein the modified catalyst support loses no more than 8% of the pore volume when exposed to a water vapor; and iii. contacting the modified catalyst support with a second solution comprising a precursor compound of an active cobalt catalyst component and glutaric acid to obtain the catalyst precursor; and b. reducing the catalyst precursor to activate the catalyst precursor to obtain the Fischer Tropsch catalyst.Type: GrantFiled: December 8, 2015Date of Patent: June 27, 2017Assignee: Chevron U.S.A. Inc.Inventors: Kandaswamy Jothimurugesan, Howard Steven Lacheen
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Patent number: 9364782Abstract: The present disclosure relates to the selective separation of carbon dioxide (CO2) from multi-component gas feedstreams containing CO2 utilizing a GME framework type zeolite substantially free of non-GME framework type material.Type: GrantFiled: January 26, 2015Date of Patent: June 14, 2016Assignee: Chevron U.S.A. Inc.Inventors: Dan Xie, Howard Steven Lacheen
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Publication number: 20160089662Abstract: A process has been developed for preparing a Fischer-Tropsch catalyst precursor and a Fischer-Tropsch catalyst made from the precursor. The process includes contacting an alumina catalyst support material with a first solution containing a vanadium compound and a phosphorus compound, to obtain a modified catalyst support material. The modified catalyst support material is calcined at a temperature of at least 500° C. The calcined modified catalyst support has a pore volume of at least 0.4cc/g. The modified catalyst support is less soluble in acid solutions than an equivalent unmodified catalyst support. The modified catalyst support is contacted with a second solution which includes a precursor compound of an active cobalt catalyst component and an organic compound, preferably glutaric acid, to obtain a catalyst precursor. The catalyst precursor is reduced to activate the catalyst precursor to obtain the Fischer-Tropsch catalyst.Type: ApplicationFiled: December 8, 2015Publication date: March 31, 2016Inventors: Kandaswamy Jothimurugesan, Howard Steven Lacheen
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Patent number: 9290702Abstract: Methods for monitoring ionic liquids using vibrational spectroscopy may involve contacting an infrared (IR) transmissive medium with the ionic liquid, recording an IR spectrum of the ionic liquid, and quantifying at least one chemical characteristic of the ionic liquid based on the IR spectrum. The IR spectrum may be recorded ex situ or in situ. Methods for controlling ionic liquid catalyzed processes are also disclosed, wherein a condition of the ionic liquid may be determined during such processes based on IR spectral analysis of the ionic liquid.Type: GrantFiled: May 16, 2011Date of Patent: March 22, 2016Assignee: Chevron U.S.A. Inc.Inventor: Howard Steven Lacheen
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Publication number: 20160002542Abstract: Processes for decomposing organic chloride in a hydrocarbon stream may comprise contacting a hydrocarbon stream with a dechlorination element in a dechlorination zone under dechlorination conditions to provide a dechlorinated hydrocarbon product, wherein the dechlorination element may comprise a metal or metal alloy having a high surface area configuration. Such a dechlorination element may be disposed within one or more distillation columns and/or within a separate dechlorination vessel.Type: ApplicationFiled: July 3, 2014Publication date: January 7, 2016Applicant: Chevron U.S.A. Inc.Inventor: Howard Steven Lacheen
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Patent number: 9192921Abstract: A process is disclosed for preparing a Fischer-Tropsch catalyst precursor and a catalyst made from the precursor. The process includes contacting an alumina catalyst support material with a first solution containing a vanadium compound and a phosphorus compound, to obtain a modified catalyst support material. The modified catalyst support material is calcined at a temperature of at least 500° C. The calcined modified catalyst support has a pore volume of at least 0.4 cc/g. The modified catalyst support is less soluble in acid solutions than an equivalent unmodified catalyst support. The modified catalyst support is contacted with a second solution which includes a precursor compound of an active cobalt catalyst component and glutaric acid to obtain a catalyst precursor. The catalyst precursor is reduced to activate the catalyst precursor to obtain the Fischer-Tropsch catalyst. The catalyst has enhanced hydrothermal stability and good activity.Type: GrantFiled: April 21, 2015Date of Patent: November 24, 2015Assignee: Chevron U.S.A. Inc.Inventors: Kandaswamy Jothimurugesan, Howard Steven Lacheen