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).

  • Publication number: 20250059035
    Abstract: A method for converting carbon dioxide gas to liquefied carbon dioxide includes (a) receiving, in a heat exchanger, a carbon dioxide gas stream and a liquefied natural gas stream, and (b) exposing the carbon dioxide gas stream to the liquefied natural gas stream to convert the carbon dioxide gas stream to liquefied carbon dioxide, and the liquefied natural gas stream is regasified to natural gas. The natural gas exits the heat exchanger and is sent to a steam methane reformer for further processing.
    Type: Application
    Filed: August 15, 2023
    Publication date: February 20, 2025
    Inventors: Howard Steven Lacheen, Christopher Declan Lane
  • Publication number: 20240367159
    Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-92. Molecular sieve SSZ-92 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves and is characterized as having magnesium.
    Type: Application
    Filed: March 24, 2022
    Publication date: November 7, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Adeola OJO, Yihua ZHANG, Guan-Dao LEI, Howard Steven LACHEEN
  • Publication number: 20240165596
    Abstract: The present application pertains to family of new crystalline molecular sieves designated SSZ-93. Molecular sieve SSZ-93 is structurally similar to sieves falling within the MTT structure type such as SSZ-32x, SSZ-32, ZSM-23, EU-13, ISI-4, and KZ-1 family of molecular sieves. SSZ-93 is characterized as having magnesium.
    Type: Application
    Filed: March 24, 2022
    Publication date: May 23, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Adeola OJO, Yihua ZHANG, Guan-Dao LEI, Howard Steven LACHEEN
  • Patent number: 11753355
    Abstract: 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: Grant
    Filed: April 30, 2020
    Date of Patent: September 12, 2023
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Howard Steven Lacheen, Hye-Kyung Cho Timken
  • Publication number: 20220041526
    Abstract: 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: Application
    Filed: April 30, 2020
    Publication date: February 10, 2022
    Inventors: Howard Steven LACHEEN, Hye-Kyung Cho TIMKEN
  • Patent number: 10913659
    Abstract: 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: Grant
    Filed: June 23, 2020
    Date of Patent: February 9, 2021
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Christopher Michael Lew, Stacey Ian Zones, Dan Xie, Howard Steven Lacheen, Tao Wei
  • Publication number: 20200171471
    Abstract: 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: Application
    Filed: January 29, 2020
    Publication date: June 4, 2020
    Inventors: Stacey Ian Zones, Tracy Margaret Davis, Dan Xie, Cong-Yan Chen, Howard Steven Lacheen
  • Patent number: 10589260
    Abstract: 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: Grant
    Filed: January 21, 2019
    Date of Patent: March 17, 2020
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Stacey Ian Zones, Tracy Margaret Davis, Dan Xie, Cong-Yan Chen, Howard Steven Lacheen
  • Publication number: 20190224655
    Abstract: 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: Application
    Filed: January 21, 2019
    Publication date: July 25, 2019
    Inventors: Stacey Ian Zones, Tracy Margaret Davis, Dan Xie, Cong-Yan Chen, Howard Steven Lacheen
  • Patent number: 10167200
    Abstract: 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: Grant
    Filed: October 11, 2017
    Date of Patent: January 1, 2019
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey Ian Zones, Cong-Yan Chen, Howard Steven Lacheen, Kaustav Chaudhuri
  • Patent number: 10113963
    Abstract: 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: Grant
    Filed: June 26, 2018
    Date of Patent: October 30, 2018
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Hye-Kyung Cho Timken, Toni Zhang Miao, Howard Steven Lacheen, Bi-Zeng Zhan
  • Patent number: 10094778
    Abstract: 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: Grant
    Filed: June 2, 2017
    Date of Patent: October 9, 2018
    Assignee: Chevron U.S.A. Inc.
    Inventors: Huping Luo, Hye-Kyung Cho Timken, Toni Zhang Miao, Howard Steven Lacheen, Bi-Zeng Zhan
  • Patent number: 10010877
    Abstract: 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: Grant
    Filed: June 14, 2016
    Date of Patent: July 3, 2018
    Assignee: Chevron U.S.A. Inc.
    Inventors: Kandaswamy Jothimurugesan, Howard Steven Lacheen, Mark Muraoka
  • Publication number: 20180162738
    Abstract: 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: Application
    Filed: October 11, 2017
    Publication date: June 14, 2018
    Inventors: Stacey Ian Zones, Cong-Yan Chen, Howard Steven Lacheen, Kaustav Chaudhuri
  • Publication number: 20170354960
    Abstract: 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: Application
    Filed: June 14, 2016
    Publication date: December 14, 2017
    Inventors: Kandaswamy Jothimurugesan, Howard Steven Lacheen, Mark Muraoka
  • Patent number: 9839897
    Abstract: 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: Grant
    Filed: May 30, 2013
    Date of Patent: December 12, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventor: Howard Steven Lacheen
  • Patent number: 9815043
    Abstract: 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: Grant
    Filed: April 20, 2015
    Date of Patent: November 14, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventor: Howard Steven Lacheen
  • Patent number: 9687826
    Abstract: 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: Grant
    Filed: December 8, 2015
    Date of Patent: June 27, 2017
    Assignee: Chevron U.S.A. Inc.
    Inventors: Kandaswamy Jothimurugesan, Howard Steven Lacheen
  • Patent number: 9364782
    Abstract: 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: Grant
    Filed: January 26, 2015
    Date of Patent: June 14, 2016
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dan Xie, Howard Steven Lacheen
  • Publication number: 20160089662
    Abstract: 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: Application
    Filed: December 8, 2015
    Publication date: March 31, 2016
    Inventors: Kandaswamy Jothimurugesan, Howard Steven Lacheen