Patents by Inventor Hye Kyung Cho Timken

Hye Kyung Cho Timken 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: 20250215182
    Abstract: Provided is a process for converting waste polystyrene plastic into recycle for polystyrene polymerization. The process comprises selecting waste polystyrene plastics and preparing a stable blend of aromatic-rich hydrocarbon feedstock and the polystyrene plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery FCC unit. Aromatic products are recovered from the FCC unit, from which styrene is separated. The separated styrene can then be passed to a polymerization unit to prepare polystyrene.
    Type: Application
    Filed: December 23, 2024
    Publication date: July 3, 2025
    Applicant: Chevron U.S.A. Inc.
    Inventors: Joel E. SCHMIDT, Hye-Kyung Cho TIMKEN, Tengfei LIU
  • Publication number: 20250188360
    Abstract: A continuous process for transporting a waste plastic feedstock to a refinery processing unit, includes forming a solution containing (i) about 1 to about 40 wt. %, based on the total weight of the solution, of one or more waste plastic feedstocks and (ii) a recycled inert carrier fluid received from a refinery processing unit, and processing the solution comprising the one or more waste plastic feedstocks and the recycled inert carrier fluid in the presence of a catalyst under catalytic cracking conditions.
    Type: Application
    Filed: December 6, 2023
    Publication date: June 12, 2025
    Inventors: Joel Edward Schmidt, Tengfei Liu, Robert E. Montgomery, Richard L. Grove, Thomas Michael Porritt, Hye-Kyung Cho Timken
  • Publication number: 20250188358
    Abstract: A continuous process for transporting one or more waste plastic feedstocks to a refinery processing unit, includes receiving, in a blending unit, one or more waste plastic feedstocks, one or more waste plastic-immiscible bio feedstocks and a recycled inert carrier fluid received from a refinery processing unit, generating, in the blending unit, a homogeneous solution comprising the one or more waste plastic feedstocks, the one or more waste plastic-immiscible bio feedstocks and the recycled inert carrier fluid, and processing the homogeneous solution in the presence of a catalyst under catalytic cracking conditions in the refinery processing unit.
    Type: Application
    Filed: December 6, 2023
    Publication date: June 12, 2025
    Inventors: Tengfei Liu, Joel Edward Schmidt, Robert E. Montgomery, Richard L. Grove, Hye-Kyung Cho Timken
  • Patent number: 12281054
    Abstract: A process for producing renewable distillate-range hydrocarbons is provided. The process includes dehydrating a renewable C2-C6 alcohol feedstock to produce an olefin, oligomerizing the olefin the presence of a halometallate ionic liquid catalyst to produce an oligomer product and hydrogenating the oligomer product or fractions thereof to produce saturated distillate-range hydrocarbons.
    Type: Grant
    Filed: June 10, 2024
    Date of Patent: April 22, 2025
    Assignee: Chevron U.S.A. Inc.
    Inventors: Bong Kyu Chang, Hye-Kyung Cho Timken, Michelle K. Young
  • Patent number: 12258302
    Abstract: A process for producing high octane alkylate is provided. The process involves reacting isobutane and ethylene using an ionic liquid catalyst. Reaction conditions can be chosen to assist in attaining, or to optimize, desirable alkylate yields and/or properties.
    Type: Grant
    Filed: March 19, 2024
    Date of Patent: March 25, 2025
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Bong-Kyu Chang, Hye-Kyung Cho Timken, Huping Luo
  • Publication number: 20240392096
    Abstract: Provided is a stable blend of a petroleum atmospheric tower bottoms (ATBs) feedstock and 1-20 wt. % of plastic, based on the weight of the blend, with the plastic comprising polyethylene and/or polypropylene, and the plastic in the blend comprising finely dispersed microcrystalline particles having an average particle size of 10 micron to less than 100 microns. A process for preparing a stable blend of plastic and petroleum is provided, comprising mixing together a petroleum feed and a plastic comprising polyethylene and/or polypropylene and heating the mixture above the melting point of the plastic, but less than 500° F. Then cooling the plastic melt and petroleum feedstock liquid blend with mixing to a temperature below the melting point of the plastic.
    Type: Application
    Filed: May 22, 2024
    Publication date: November 28, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Joel Edward SCHMIDT, Richard L. GROVE, Robert MONTGOMERY, Tengfei LIU, Hye-Kyung Cho TIMKEN
  • Publication number: 20240327314
    Abstract: A process for producing renewable distillate-range hydrocarbons is provided. The process includes dehydrating a renewable C2-C6 alcohol feedstock to produce an olefin, oligomerizing the olefin the presence of a halometallate ionic liquid catalyst to produce an oligomer product and hydrogenating the oligomer product or fractions thereof to produce saturated distillate-range hydrocarbons.
    Type: Application
    Filed: June 10, 2024
    Publication date: October 3, 2024
    Applicant: Chevron U.S.A. Inc.
    Inventors: Bong Kyu CHANG, Hye-Kyung Cho TIMKEN, Michelle K. Young
  • Patent number: 12043589
    Abstract: A process for producing renewable distillate-range hydrocarbons is provided. The process includes dehydrating a renewable C2-C6 alcohol feedstock to produce an olefin, oligomerizing the olefin the presence of a halometallate ionic liquid catalyst to produce an oligomer product and hydrogenating the oligomer product or fractions thereof to produce saturated distillate-range hydrocarbons.
    Type: Grant
    Filed: March 2, 2023
    Date of Patent: July 23, 2024
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Bong Kyu Chang, Hye-Kyung Cho Timken, Michelle K. Young
  • Publication number: 20240217897
    Abstract: A process for producing high octane alkylate is provided. The process involves reacting isobutane and ethylene using an ionic liquid catalyst. Reaction conditions can be chosen to assist in attaining, or to optimize, desirable alkylate yields and/or properties.
    Type: Application
    Filed: March 19, 2024
    Publication date: July 4, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Bong-Kyu CHANG, Hye-Kyung Cho TIMKEN, Huping LUO
  • Patent number: 11964926
    Abstract: A process for producing high octane alkylate is provided. The process involves reacting isobutane and ethylene using an ionic liquid catalyst. Reaction conditions can be chosen to assist in attaining, or to optimize, desirable alkylate yields and/or properties.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: April 23, 2024
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Bong-Kyu Chang, Hye-Kyung Cho Timken, Huping Luo
  • Patent number: 11884885
    Abstract: A process is provided for producing a liquid hydrocarbon material suitable for use as a fuel or as a blending component in a fuel. The process includes co-processing a pyrolysis oil derived from a waste plastic raw material and a biorenewable feedstock comprising triglycerides in a catalytic cracking process in a presence of a solid catalyst at catalytic cracking conditions to provide a cracking product. The cracking product may be fractionated to provide at least one of a gasoline fraction and a middle distillate fraction.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: January 30, 2024
    Inventors: Tengfei Liu, Joel Edward Schmidt, Richard Grove, Hye-Kyung Cho Timken
  • Publication number: 20230373883
    Abstract: A process for producing renewable distillate-range hydrocarbons is provided. The process includes dehydrating a renewable C2-C6 alcohol feedstock to produce an olefin, oligomerizing the olefin the presence of a halometallate ionic liquid catalyst to produce an oligomer product and hydrogenating the oligomer product or fractions thereof to produce saturated distillate-range hydrocarbons.
    Type: Application
    Filed: March 2, 2023
    Publication date: November 23, 2023
    Applicant: Chevron U.S.A. Inc.
    Inventors: Bong Kyu CHANG, Hye-Kyung Cho TIMKEN, Michelle K. Young
  • 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: 20230183151
    Abstract: A process for producing high octane alkylate is provided. The process involves reacting isobutane and ethylene using an ionic liquid catalyst. Reaction conditions can be chosen to assist in attaining, or to optimize, desirable alkylate yields and/or properties.
    Type: Application
    Filed: September 28, 2022
    Publication date: June 15, 2023
    Inventors: Bong-Kyu CHANG, Hye-Kyung Cho TIMKEN, Huping LUO
  • Patent number: 11643373
    Abstract: An alkylation process is described. The process involves alkylation of isobutane and ethylene in a loop reactor using an ionic liquid catalyst as a continuous phase. The alkylate typically has a research octane number of at least about 93, and the olefin conversion is typically at least about 95%.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: May 9, 2023
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Huping Luo, Hye-Kyung Cho Timken, Bong-Kyu Chang
  • Patent number: 11643374
    Abstract: A process for producing high octane bio-based alkylate is provided. The process involves reacting isobutane and bio-ethylene using an ionic liquid catalyst. Reaction conditions can be chosen to assist in attaining, or to optimize, desirable alkylate yields and/or properties.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: May 9, 2023
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Bong-Kyu Chang, Hye-Kyung Cho Timken, Michelle K. Young, Cong-Yan Chen, Stephen Joseph Miller
  • Patent number: 11639320
    Abstract: A process for producing renewable distillate-range hydrocarbons is provided. The process includes dehydrating a renewable C2-C6 alcohol feedstock to produce an olefin, oligomerizing the olefin the presence of a halometallate ionic liquid catalyst to produce an oligomer product and hydrogenating the oligomer product or fractions thereof to produce saturated distillate-range hydrocarbons.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: May 2, 2023
    Assignee: Chevron U.S.A. Inc.
    Inventors: Bong Kyu Chang, Hye-Kyung Cho Timken, Michelle K. Young
  • Patent number: 11621059
    Abstract: A method is provided for predicting conjunct polymer concentration in spent ionic liquid during a continuous hydrocarbon conversion process.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: April 4, 2023
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Toni Zhang Miao, Huping Luo, Hye-Kyung Cho Timken, Eddy Lee, Bong-Kyu Chang
  • Publication number: 20230085274
    Abstract: A process is provided for producing a liquid hydrocarbon material suitable for use as a fuel or as a blending component in a fuel. The process includes co-processing a pyrolysis oil derived from a waste plastic raw material and a biorenewable feedstock comprising triglycerides in a catalytic cracking process in a presence of a solid catalyst at catalytic cracking conditions to provide a cracking product. The cracking product may be fractionated to provide at least one of a gasoline fraction and a middle distillate fraction.
    Type: Application
    Filed: July 20, 2022
    Publication date: March 16, 2023
    Inventors: Tengfei LIU, Joel Edward SCHMIDT, Richard GROVE, 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