Patents by Inventor Jane Chi-Ya Cheng

Jane Chi-Ya Cheng 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).

  • Patent number: 10400184
    Abstract: Heavy oil feeds are hydroprocessed in the presence of a solvent and in the presence of a catalyst with a median pore size of about 85 ? to about 120 ? under conditions that provide a variety of benefits. The solvent can be an added solvent or a portion of the liquid effluent from hydroprocessing. The processes allow for lower pressure processing of heavy oil feeds for extended processing times or extended catalyst lifetimes be reducing or mitigating the amount of coke formation on the hydroprocessing catalyst.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: September 3, 2019
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Hyung Suk Woo, Jane Chi-Ya Cheng, Teh C. Ho, Stephen Harold Brown
  • Patent number: 9725327
    Abstract: A method of making a crystalline molecular sieve of MFI framework type, preferably ZSM-5, from a synthesis mixture comprising at least one source of tetravalent element (Y), at least one source of trivalent element (X), at least one source of alkali metal hydroxide (MOH), at least one structure directing; (R) and water, said synthesis mixture having the following molar composition: YO2, (p)X2O3: (q) MOH: (r) R: (s) H2O, wherein (p) is from 0.005 to 0.025, (q) is from 0.05 to 0.5, (r) is from 0.05 to 0.15 and (s) is from 35 to 45, wherein the ratio of the largest dimension (L) to the smallest dimension (S) of each crystal of the molecular sieve product is at least 5, and the smallest dimension (S) is from 20 nm to 200 nm.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: August 8, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Machteld Maria Wilfried Mertens, Marc H. Anthonis, Antonie Jan Bons, Brita Engels, Wilfried Jozef Mortier, Jane Chi-ya Cheng
  • Patent number: 9206363
    Abstract: Heavy oil feeds are hydroprocessed in the presence of a solvent under conditions that provide a variety of benefits. The solvent can be an added solvent or a portion of the liquid effluent from hydroprocessing. The processes allow for lower pressure processing of heavy oil feeds for extended processing times or extended catalyst lifetimes be reducing or mitigating the amount of coke formation on the hydroprocessing catalyst.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: December 8, 2015
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Hyung Suk Woo, Jane Chi-ya Cheng, Teh C. Ho, Stephen Harold Brown, Richard Charles Dougherty, David Thomas Ferrughelli, Federico Barrai
  • Publication number: 20150298982
    Abstract: A method of making a crystalline molecular sieve of MFI framework type, preferably ZSM-5, from a synthesis mixture comprising at least one source of tetravalent element (Y), at least one source of trivalent element (X), at least one source of alkali metal hydroxide (MOH), at least one structure directing agent (R) and water, said synthesis mixture having the following molar composition: YO2:(p) X2O3:(q) MOH:(r) R:(s) H2O, wherein (p) is from 0.005 to 0.025, (q) is from 0.05 to 0.5, (r) is from 0.05 to 0.15 and (s) is from 35 to 45, wherein the ratio of the largest dimension (L) to the smallest dimension (S) of each crystal of the molecular sieve product is at least 5, and the smallest dimension (S) is from 20 nm to 200 nm.
    Type: Application
    Filed: November 14, 2013
    Publication date: October 22, 2015
    Inventors: Machteld Maria Wilfried Mertens, Marc H. Anthonis, Antonie Jan Bons, Brita Engels, Wilfried Jozef Mortier, Jane Chi-ya Cheng
  • Patent number: 9029621
    Abstract: A process for oligomerizing isobutene comprises contacting a feedstock comprising isobutene with a catalyst comprising a MCM-22 family molecular sieve under conditions effective to oligomerize the isobutene, wherein said conditions including a temperature from about 45° C. to less than 140° C. The isobutene may be a component of a hydrocarbon feedstock containing at least one additional C4 alkene. In certain aspects, isobutene oligomers are separated from a first effluent of the oligomerization to produce a second effluent comprising at least one n-butene. The second effluent can be contacted with an alkylation catalyst to produce sec-butylbenzene.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: May 12, 2015
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John Scott Buchanan, Jane Chi-Ya Cheng, Jihad Mohammed Dakka, Jon Edmond Stanat
  • Patent number: 8741129
    Abstract: This invention is directed to a process for producing a hydroprocessed product. The invention is particularly advantageous in that substantially less hydrogen is absorbed during the process relative to conventional hydroprocessing methods. This benefit is achieved by using a particular solvent as a co-feed component. In particular, the solvent component contains at least one single ring aromatic compound and has a relatively low boiling point range compared to the heavy hydrocarbon oil component used as another co-feed component.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: June 3, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Stephen Harold Brown, Teh C. Ho, Jane Chi-Ya Cheng, Hyung Suk Woo
  • Publication number: 20130161237
    Abstract: Heavy oil feeds are hydroprocessed in the presence of a solvent under conditions that provide a variety of benefits. The solvent can be an added solvent or a portion of the liquid effluent from hydroprocessing. The processes allow for lower pressure processing of heavy oil feeds for extended processing times or extended catalyst lifetimes be reducing or mitigating the amount of coke formation on the hydroprocessing catalyst.
    Type: Application
    Filed: August 29, 2012
    Publication date: June 27, 2013
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Hyung Suk Woo, Jane Chi-ya Cheng, Teh C. Ho, Stephen Harold Brown, Richard Charles Dougherty, David Thomas Ferrughelli, Federico Barrai
  • Publication number: 20130081978
    Abstract: This invention is directed to a process for producing a hydroprocessed product. The invention is particularly advantageous in that substantially less hydrogen is absorbed during the process relative to conventional hydroprocessing methods. This benefit is achieved by using a particular solvent as a co-feed component. In particular, the solvent component contains at least one single ring aromatic compound and has a relatively low boiling point range compared to the heavy hydrocarbon oil component used as another co-feed component.
    Type: Application
    Filed: August 29, 2012
    Publication date: April 4, 2013
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Stephen Harold Brown, Teh C. Ho, Jane Chi-ya Cheng, Hyung Suk Woo
  • Publication number: 20130081979
    Abstract: This invention is directed to a process for producing a hydroprocessed product. The invention is particularly advantageous in that substantially longer run length can be attained relative to conventional hydroprocessing methods. This benefit is achieved by using a particular solvent as a co-feed component. In particular, the solvent component is comprised of at least one or more supercritical solvent compounds.
    Type: Application
    Filed: August 29, 2012
    Publication date: April 4, 2013
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Stephen Harold Brown, Teh C. Ho, Jane Chi-ya Cheng, Hyung Suk Woo
  • Publication number: 20130081977
    Abstract: Heavy oil feeds are hydroprocessed in the presence of a solvent and in the presence of a catalyst with a median pore size of about 85 ? to about 120 ? under conditions that provide a variety of benefits. The solvent can be an added solvent or a portion of the liquid effluent from hydroprocessing. The processes allow for lower pressure processing of heavy oil feeds for extended processing times or extended catalyst lifetimes be reducing or mitigating the amount of coke formation on the hydroprocessing catalyst.
    Type: Application
    Filed: August 29, 2012
    Publication date: April 4, 2013
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Hyung Suk Woo, Jane Chi-ya Cheng, Teh C. Ho, Stephen Harold Brown
  • Publication number: 20110282120
    Abstract: A process for oligomerizing isobutene comprises contacting a feedstock comprising isobutene with a catalyst comprising a MCM-22 family molecular sieve under conditions effective to oligomerize the isobutene, wherein said conditions including a temperature from about 45° C. to less than 140° C. The isobutene may be a component of a hydrocarbon feedstock containing at least one additional C4 alkene.
    Type: Application
    Filed: October 2, 2008
    Publication date: November 17, 2011
    Inventors: John Scott Buchanan, Jane Chi-Ya Cheng, Jihad Mohammed Dakka, Jon Edmond Stanat
  • Patent number: 7910778
    Abstract: In a process for producing cyclohexylbenzene, benzene and hydrogen are contacted with a catalyst under hydroalkylation conditions to produce an effluent containing cyclohexylbenzene. The catalyst comprises a composite of a molecular sieve, an inorganic oxide different from said molecular sieve and at least one hydrogenation metal, wherein at least 50 wt % of said hydrogenation metal is supported on the inorganic oxide.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: March 22, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Tan-Jen Chen, John Scott Buchanan, Jane Chi-ya Cheng, Terry E. Helton
  • Patent number: 7799956
    Abstract: A process for producing phenol and methyl ethyl ketone comprises contacting benzene with a C4 alkylating agent under alkylation conditions with catalyst comprising zeolite beta or a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom to produce an alkylation effluent comprising sec-butylbenzene. The sec-butylbenzene is then oxidized to produce a hydroperoxide and the hydroperoxide is decomposed to produce phenol and methyl ethyl ketone.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: September 21, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jane Chi-ya Cheng, John S. Buchanan, Doron Levin, Michael A. Steckel, Jihad M. Dakka, James P. Stokes, John L. Robbins, Jon E. Stanat, Charles M. Smith, José G. Santiesteban
  • Publication number: 20100191017
    Abstract: In a process for producing cyclohexylbenzene, benzene and hydrogen are contacted with a catalyst under hydroalkylation conditions to produce an effluent containing cyclohexylbenzene. The catalyst comprises a composite of a molecular sieve, an inorganic oxide different from said molecular sieve and at least one hydrogenation metal, wherein at least 50 wt % of said hydrogenation metal is supported on the inorganic oxide.
    Type: Application
    Filed: July 11, 2008
    Publication date: July 29, 2010
    Inventors: Tan-Jen Chen, John Scott Buchanan, Jane Chi-ya Cheng, Terry E. Helton
  • Patent number: 7396969
    Abstract: A process for producing alkyl aromatic compounds which comprises contacting at least one aromatic compound with at least one alkylating agent or transalkylating agent possessing at least one aliphatic group having from 1 to 5 carbon atoms under alkylation or transalkylation reaction conditions and in the presence of an alkylation or transalkylation catalyst, to provide an alkylated aromatic product possessing at least one alkyl group derived from said alkylating agent or transalkylating agent, said catalyst comprising a binder-free molecular sieve having an X-ray diffraction pattern that includes the lines set forth in Table A.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: July 8, 2008
    Assignee: Mobil Oil Corporation
    Inventors: Jane Chi-Ya Cheng, Terry Eugene Helton, Dominick Nicholas Mazzone, Dennis E. Walsh
  • Patent number: 6936744
    Abstract: The present invention provides a process for producing a monoalkylated aromatic compound, particularly cumene, comprising the step of contacting a polyalkylated aromatic compound with an alkylatable aromatic compound under at least partial liquid phase conditions and in the presence of a transalkylation catalyst to produce the monoalkylated aromatic compound, wherein the transalkylation catalyst comprises a mixture of at least two different crystalline molecular sieves, wherein each of said molecular sieves is selected from zeolite beta, zeolite Y, mordenite and a material having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: August 30, 2005
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Jane Chi Ya Cheng, Michael Alan Steckel, Charles Morris Smith, William Alois Weber, Stephen Harold Brown, Ajit Bhaskar Dandekar, Michael Alan Better
  • Patent number: 6919491
    Abstract: A process for producing alkyl aromatic compounds which comprises contacting at least one aromatic compound with at least one alkylating agent or transalkylating agent possessing at least one aliphatic group having from 1 to 5 carbon atoms under alkylation or transalkylation reaction conditions and in the presence of an alkylation or transalkylation catalyst, to provide an alkylated aromatic product possessing at least one alkyl group derived from said alkylating agent or transalkylating agent, said catalyst comprising a binder-free molecular sieve having an X-ray diffraction pattern that includes the lines set forth in Table A.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: July 19, 2005
    Assignee: ExxonMobil Oil Corporation
    Inventors: Jane Chi-Ya Cheng, Terry Eugene Helton, Dominick Nicholas Mazzone, Dennis E. Walsh
  • Patent number: 6753453
    Abstract: A process for the selective production of meta-diisopropylbenzene is disclosed, wherein the process comprises the steps of contacting cumene under disproportionation conditions and in the absence of added benzene with a catalyst comprising a porous crystalline inorganic oxide material having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom to produce a disproportionation effluent containing benzene and mixture of diisopropylbenzene isomers, and then recovering from said disproportion effluent a meta-diisopropylbenzene boiling range fraction in which the ratio of meta-diisopropylbenzene to ortho-diisopropylbenzene is in excess of 50 and the total amount of meta-diisopropylbenzene co-boilers excluding ortho-diisopropylbenzene is less than 1 wt % of said fraction.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: June 22, 2004
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jane Chi-Ya Cheng, William A. Weber, Francis S. Bryan
  • Publication number: 20040097771
    Abstract: A process for the selective production of meta-diisopropylbenzene is disclosed, wherein the process comprises the steps of contacting cumene under disproportionation conditions and in the absence of added benzene with a catalyst comprising a porous crystalline inorganic oxide material having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom to produce a disproportionation effluent containing benzene and a mixture of diusopropylbenzene isomers, and then recovering from said disproportionation effluent a meta-diisopropylbenzene boiling range fraction in which the ratio of meta-diisopropylbenzene to ortho-diisopropylbenzene is in excess of 50 and the total amount of meta-diisopropylbenzene co-boilers excluding ortho-diisopropylbenzene is less than 1 wt % of said fraction.
    Type: Application
    Filed: November 19, 2002
    Publication date: May 20, 2004
    Inventors: Jane Chi-Ya Cheng, William A. Weber, Francis S. Bryan
  • Patent number: 6506953
    Abstract: There is described a process the hydroalkylation of an aromatic hydrocarbon, particularly benzene, to produce a cycloalkyl-substituted aromatic compound, particularly cyclohexylbenzene, comprising the step of contacting the aromatic hydrocarbon with hydrogen in the presence of a catalyst comprising MCM-68 and at least one metal having hydrogenation activity.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: January 14, 2003
    Assignee: ExxonMobil Oil Corporation
    Inventors: Jane Chi-Ya Cheng, Ajit B. Dandekar, Michael Alan Steckel, Hye Kyung Cho Timken