Patents by Inventor Lisa I-Ching Yeh

Lisa I-Ching Yeh 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: 11186787
    Abstract: A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by ultra violet (UV) spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.015 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 4 and 6 cSt. A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by UV spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.020 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 10 and 14 cSt. A lubricating oil having the base stock as a major component, and one or more additives as a minor component. Methods for improving oxidation performance and low temperature performance of formulated lubricant compositions through the compositionally advantaged base stock.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: November 30, 2021
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Rugved P. Pathare, Lisa I-Ching Yeh, Yogi V. Shukla, Charles L. Baker, Jr., Bryan E. Hagee, Debra A. Sysyn, Kendall S. Fruchey
  • Patent number: 11060040
    Abstract: Systems and methods are provided for block operation during lubricant and/or fuels production from deasphalted oil. During “block” operation, a deasphalted oil and/or the hydroprocessed effluent from an initial processing stage can be split into a plurality of fractions. The fractions can correspond, for example, to feed fractions suitable for forming a light neutral fraction, a heavy neutral fraction, and a bright stock fraction, or the plurality of fractions can correspond to any other convenient split into separate fractions. The plurality of separate fractions can then be processed separately in the process train (or in the sweet portion of the process train) for forming fuels and/or lubricant base stocks. This can allow for formation of unexpected base stock compositions.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: July 13, 2021
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Lisa I-Ching Yeh, Yogi V. Shukla, Pilanda Watkins-Curry, Camden N. Henderson, Kendall S. Fruchey, Michael B. Carroll, Adrienne R. Diebold
  • Patent number: 10920159
    Abstract: A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by ultra violet (UV) spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.015 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 4 and 6 cSt. A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by UV spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.020 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 10 and 14 cSt. A lubricating oil having the base stock as a major component, and one or more additives as a minor component. Methods for improving oxidation performance and low temperature performance of formulated lubricant compositions through the compositionally advantaged base stock.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: February 16, 2021
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Rugved P. Pathare, Lisa I-Ching Yeh, Yogi V. Shukla, Charles L. Baker, Jr., Bryan E. Hagee, Debra A. Sysyn, Kendall S. Fruchey
  • Patent number: 10808185
    Abstract: Methods are provided for forming lubricant base stocks from feeds such as vacuum resid or other 510° C.+ feeds. A feed can be deasphalted and then catalytically and/or solvent processed to form lubricant base stocks, including bright stocks that are resistant to haze formation.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: October 20, 2020
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Timothy L. Hilbert, Michael B. Carroll, Ajit B. Dandekar, Sara L. Yohe, Stephen H. Brown, Tracie L. Owens, April D. Ross, Eric B. Senzer, Steven Pyl, Rugved P. Pathare, Lisa I-Ching Yeh, Bradley R. Fingland, Keith K. Aldous, Anjaneya S. Kovvali, Kendall S. Fruchey, Sara K. Green, Camden N. Henderson
  • Patent number: 10590360
    Abstract: Compositions are provided for lubricant base stocks produced from feeds such as vacuum resid or other 510° C.+ feeds. A feed can be deasphalted and then catalytically and/or solvent processed to form lubricant base stocks, including bright stocks that are resistant to haze formation.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: March 17, 2020
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Lisa I-Ching Yeh, Rugved P. Pathare, Eric B. Senzer, Camden N. Henderson, Tracie L. Owens, Kendall S. Fruchey, Timothy L. Hilbert, Michael B. Carroll, Debra A. Sysyn, Kathleen E. Edwards, Bryan E. Hagee
  • Publication number: 20190375997
    Abstract: A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by ultra violet (UV) spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.015 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 4 and 6 cSt. A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by UV spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.020 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 10 and 14 cSt. A lubricating oil having the base stock as a major component, and one or more additives as a minor component. Methods for improving oxidation performance and low temperature performance of formulated lubricant compositions through the compositionally advantaged base stock.
    Type: Application
    Filed: July 31, 2019
    Publication date: December 12, 2019
    Inventors: Rugved P. Pathare, Lisa I-Ching Yeh, Yogi V. Shukla, Charles L. Baker, JR., Bryan E. Hagee, Debra A. Sysyn, Kendall S. Fruchey
  • Publication number: 20190359906
    Abstract: A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by ultra violet (UV) spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.015 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 4 and 6 cSt. A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by UV spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.020 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 10 and 14 cSt. A lubricating oil having the base stock as a major component, and one or more additives as a minor component. Methods for improving oxidation performance and low temperature performance of formulated lubricant compositions through the compositionally advantaged base stock.
    Type: Application
    Filed: July 31, 2019
    Publication date: November 28, 2019
    Inventors: Rugved P. Pathare, Lisa I-Ching Yeh, Yogi V. Shukla, Charles L. Baker, JR., Bryan E. Hagee, Debra A. Sysyn, Kendall S. Fruchey
  • Publication number: 20190359898
    Abstract: Systems and methods are provided for block operation during lubricant and/or fuels production from deasphalted oil. During “block” operation, a deasphalted oil and/or the hydroprocessed effluent from an initial processing stage can be split into a plurality of fractions. The fractions can correspond, for example, to feed fractions suitable for forming a light neutral fraction, a heavy neutral fraction, and a bright stock fraction, or the plurality of fractions can correspond to any other convenient split into separate fractions. The plurality of separate fractions can then be processed separately in the process train (or in the sweet portion of the process train) for forming fuels and/or lubricant base stocks. This can allow for formation of unexpected base stock compositions.
    Type: Application
    Filed: August 1, 2019
    Publication date: November 28, 2019
    Inventors: Lisa I-Ching Yeh, Yogi V. Shukla, Pilanda Watkins-Curry, Camden N. Henderson, Kendall S. Fruchey, Michael B. Carroll, Adrienne R. Diebold
  • Patent number: 10414995
    Abstract: A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by ultra violet (UV) spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.015 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 4 and 6 cSt. A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by UV spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.020 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 10 and 14 cSt. A lubricating oil having the base stock as a major component, and one or more additives as a minor component. Methods for improving oxidation performance and low temperature performance of formulated lubricant compositions through the compositionally advantaged base stock.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: September 17, 2019
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Rugved P. Pathare, Lisa I-Ching Yeh, Yogi V. Shukla, Charles L. Baker, Jr., Bryan E. Hagee, Debra A. Sysyn, Kendall S. Fruchey
  • Patent number: 10400185
    Abstract: Systems and methods are provided for block operation during lubricant and/or fuels production from deasphalted oil. During “block” operation, a deasphalted oil and/or the hydroprocessed effluent from an initial processing stage can be split into a plurality of fractions. The fractions can correspond, for example, to feed fractions suitable for forming a light neutral fraction, a heavy neutral fraction, and a bright stock fraction, or the plurality of fractions can correspond to any other convenient split into separate fractions. The plurality of separate fractions can then be processed separately in the process train (or in the sweet portion of the process train) for forming fuels and/or lubricant base stocks. This can allow for formation of unexpected base stock compositions.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: September 3, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Lisa I-Ching Yeh, Yogi V. Shukla, Pilanda Watkins-Curry, Camden N. Henderson, Kendall S. Fruchey, Michael B. Carroll, Adrienne R. Diebold
  • Publication number: 20190218465
    Abstract: Systems and methods are provided for block operation during lubricant and/or fuels production from deasphalted oil. During “block” operation, a deasphalted oil and/or the hydroprocessed effluent from an initial processing stage can be split into a plurality of fractions. The fractions can correspond, for example, to feed fractions suitable for forming a light neutral fraction, a heavy neutral fraction, and a bright stock fraction, or the plurality of fractions can correspond to any other convenient split into separate fractions. The plurality of separate fractions can then be processed separately in the process train (or in the sweet portion of the process train) for forming fuels and/or lubricant base stocks. The separate processing can allow for selection of conditions for forming lubricant fractions, such as bright stock fractions, that have a cloud point that is lower than the pour point.
    Type: Application
    Filed: March 20, 2019
    Publication date: July 18, 2019
    Inventors: Kendall S. FRUCHEY, Michael B. CARROLL, Timothy L. HILBERT, Adrienne R. DIEBOLD, Lisa I-Ching YEH, Camden N. HE NDERSON
  • Patent number: 10287516
    Abstract: Systems and methods are provided for block operation during lubricant and/or fuels production from deasphalted oil. During “block” operation, a deasphalted oil and/or the hydroprocessed effluent from an initial processing stage can be split into a plurality of fractions. The fractions can correspond, for example, to feed fractions suitable for forming a light neutral fraction, a heavy neutral fraction, and a bright stock fraction, or the plurality of fractions can correspond to any other convenient split into separate fractions. The plurality of separate fractions can then be processed separately in the process train (or in the sweet portion of the process train) for forming fuels and/or lubricant base stocks. The separate processing can allow for selection of conditions for forming lubricant fractions, such as bright stock fractions, that have a cloud point that is lower than the pour point.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 14, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Kendall S. Fruchey, Michael B. Carroll, Timothy L. Hilbert, Adrienne R. Diebold, Lisa I-Ching Yeh, Camden N. Henderson
  • Publication number: 20180187116
    Abstract: Systems and methods are provided for block operation during lubricant and/or fuels production from deasphalted oil. During “block” operation, a deasphalted oil and/or the hydroprocessed effluent from an initial processing stage can be split into a plurality of fractions. The fractions can correspond, for example, to feed fractions suitable for forming a light neutral fraction, a heavy neutral fraction, and a bright stock fraction, or the plurality of fractions can correspond to any other convenient split into separate fractions. The plurality of separate fractions can then be processed separately in the process train (or in the sweet portion of the process train) for forming fuels and/or lubricant base stocks. This can allow for formation of unexpected base stock compositions.
    Type: Application
    Filed: June 23, 2017
    Publication date: July 5, 2018
    Inventors: Lisa I-Ching Yeh, Yogi V. Shukla, Pilanda Watkins-Curry, Camden N. Henderson, Kendall S. Fruchey, Michael B. Carroll, Adrienne R. Diebold
  • Publication number: 20180187089
    Abstract: Systems and methods are provided for block operation during lubricant and/or fuels production from deasphalted oil. During “block” operation, a deasphalted oil and/or the hydroprocessed effluent from an initial processing stage can be split into a plurality of fractions. The fractions can correspond, for example, to feed fractions suitable for forming a light neutral fraction, a heavy neutral fraction, and a bright stock fraction, or the plurality of fractions can correspond to any other convenient split into separate fractions. The plurality of separate fractions can then be processed separately in the process train (or in the sweet portion of the process train) for forming fuels and/or lubricant base stocks. The separate processing can allow for selection of conditions for forming lubricant fractions, such as bright stock fractions, that have a cloud point that is lower than the pour point.
    Type: Application
    Filed: June 23, 2017
    Publication date: July 5, 2018
    Inventors: Kendall S. Fruchey, Michael B. Carroll, Timothy L. Hilbert, Adrienne R. Diebold, Lisa I-Ching Yeh, Camden N. Henderson
  • Publication number: 20180187105
    Abstract: Systems and methods are provided for performing solvent extraction on heavy neutral base stocks. The aromatic extraction can reduce aromatics content while have a reduced or minimized impact on lubricant properties. This can allow, for example, for correction of color and/or haze for heavy neutral base stocks, such as heavy neutral base stocks formed from a deasphalted oil.
    Type: Application
    Filed: December 15, 2017
    Publication date: July 5, 2018
    Inventors: Tracie L. Owens, Kendall S. Fruchey, Michael B. Carroll, Camden N. Henderson, Lisa I-Ching Yeh, Timothy L. Hilbert
  • Publication number: 20170283729
    Abstract: A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by ultra violet (UV) spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.015 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 4 and 6 cSt. A base stock having at least 90 wt. % saturates, an amount and distribution of aromatics, as determined by UV spectroscopy, including an absorptivity between 280 and 320 nm of less than 0.020 l/gm-cm, a viscosity index (VI) from 80 to 120, and having a cycloparaffin performance ratio greater than 1.05 and a kinematic viscosity at 100° C. between 10 and 14 cSt. A lubricating oil having the base stock as a major component, and one or more additives as a minor component. Methods for improving oxidation performance and low temperature performance of formulated lubricant compositions through the compositionally advantaged base stock.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 5, 2017
    Inventors: Rugved P. Pathare, Lisa I-Ching Yeh, Yogi V. Shukla, Charles L. Baker, JR., Bryan E. Hagee, Debra A. Sysyn, Kendall S. Fruchey
  • Publication number: 20170211005
    Abstract: Compositions are provided for lubricant base stocks produced from feeds such as vacuum resid or other 510° C.+ feeds. A feed can be deasphalted and then catalytically and/or solvent processed to form lubricant base stocks, including bright stocks that are resistant to haze formation.
    Type: Application
    Filed: December 27, 2016
    Publication date: July 27, 2017
    Inventors: Lisa I-Ching Yeh, Rugved P. Pathare, Eric B. Senzer, Camden N. Henderson, Tracie L. Owens, Kendall S. Fruchey, Timothy L. Hilbert, Michael B. Carroll, Debra A. Sysyn, Kathleen E. Edwards, Bryan E. Hagee
  • Publication number: 20170183578
    Abstract: Methods are provided for forming lubricant base stocks from feeds such as vacuum resid or other 510° C.+ feeds. A feed can be deasphalted and then catalytically and/or solvent processed to form lubricant base stocks, including bright stocks. The catalytic processing can correspond to processing in at least two stages. The amount of conversion performed in each stage can be varied to produce bright stocks with various properties.
    Type: Application
    Filed: December 27, 2016
    Publication date: June 29, 2017
    Inventors: Timothy L. Hilbert, Michael B. Carroll, Ajit B. Dandekar, Sara L. Yohe, Stephen H. Brown, Tracie L. Owens, April D. Ross, Eric B. Senzer, Steven Pyl, Rugved P. Pathare, Lisa I-Ching Yeh, Bradley R. Fingland, Keith K. Aldous, Anjaneya S. Kovvali, Kendall S. Fruchey, Charles L. Baker, JR., Camden N. Henderson
  • Publication number: 20170183576
    Abstract: Methods are provided for forming lubricant base stocks from feeds such as vacuum resid or other 510° C.+ feeds. A feed can be deasphalted and then catalytically and/or solvent processed to form lubricant base stocks, including bright stocks that are resistant to haze formation.
    Type: Application
    Filed: December 27, 2016
    Publication date: June 29, 2017
    Inventors: Timothy L. Hilbert, Michael B. Carroll, Ajit B. Dandekar, Sara L. Yohe, Stephen H. Brown, Tracie L. Owens, April D. Ross, Eric B. Senzer, Steven Pyl, Rugved P. Pathare, Lisa I-Ching Yeh, Bradley R. Fingland, Keith K. Aldous, Anjaneya S. Kovvali, Kendall S. Fruchey
  • Publication number: 20170183577
    Abstract: Methods are provided for forming lubricant base stocks from feeds such as vacuum resid or other 510° C.+ feeds. A feed can be deasphalted and then catalytically and/or solvent processed to form lubricant base stocks, including bright stocks that are resistant to haze formation.
    Type: Application
    Filed: December 27, 2016
    Publication date: June 29, 2017
    Inventors: Timothy L. Hilbert, Michael B. Carroll, Ajit B. Dandekar, Sara L. Yohe, Stephen H. Brown, Tracie L. Owens, April D. Ross, Eric B. Senzer, Steven Pyl, Rugved P. Pathare, Lisa I-Ching Yeh, Bradley R. Fingland, Keith K. Aldous, Anjaneya S. Kovvali, Kendall S. Fruchey, Sara K. Green, Camden N. Henderson