Patents by Inventor Hyeong-Wook Choi

Hyeong-Wook Choi 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: 20240132021
    Abstract: An apparatus for controlling a discharge pressure of a fluid includes: a pump configured to suck the fluid through an inlet or to discharge the sucked fluid through an outlet; a distributor connected to the pump and to an injection nozzle provided by a sensor and configured to distribute the fluid discharged from the pump to the sensor; and a controller. The controller is configured to control the pump to operate selectively in accordance with detection of contamination of the sensor and to control operation of the distributor to be forcibly delayed during operation of the pump such that the fluid distributed to the sensor, when detected as being contaminated, is controlled to reach a selected required discharge pressure of different required discharge pressures selected in accordance with water amount information and a degree of contamination of the sensor.
    Type: Application
    Filed: April 30, 2023
    Publication date: April 25, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DY AUTO CORPORATION
    Inventors: Young Joon Shin, Chan Mook Choi, Gyu Won Han, Jong Min Park, Jin Hee Lee, Jong Wook Lee, Min Wook Park, Seong Jun Kim, Hyeong Jun Kim, Sun Ju Kim
  • Publication number: 20240060068
    Abstract: Gapmers or pharmaceutically acceptable salt of the gapmers and methods of making the gapmers are provided. The gapmers include a gap region that contains deoxyribonucleosides linked to each other by phosphorothioate bonds, a 5? wing region positioned at the 5? end of the gap region that contains morpholino monomers linked to each other by phosphorodiamidate bonds, and a 3? wing region positioned at the 3? end of the gap region that contains morpholino monomers linked to each other by phosphorodiamidate bonds. Antisense oligonucleotides are also provided. These antisense oligonucleotides are useful in the preparation of gapmers for inhibition of Tau mRNA transcription.
    Type: Application
    Filed: December 10, 2021
    Publication date: February 22, 2024
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Francis G. Fang, Dae-Shik Kim, Hyeong Wook Choi, Yoshinori Takahashi, Kenji Kikuta, Hikaru Kawashima, Wataru Itano, Toshiki Kurokawa, Tamaki Hoshikawa, Mingde SHAN, John Wang
  • Publication number: 20230151022
    Abstract: The invention provides methods utilizing Prins reaction in the preparation of compounds that may be useful as intermediates in the synthesis of halichondrin macrolides and analogs thereof. The invention also provides compounds that may be useful as intermediates in the synthesis of a halichondrin macrolides and methods for preparing the same.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 18, 2023
    Inventors: Hyeong-Wook CHOI, Francis G. FANG
  • Patent number: 11643418
    Abstract: The invention provides methods for the synthesis of eribulin or a pharmaceutically acceptable salt thereof (e.g., eribulin mesylate) through a macrocyclization strategy. The macrocyclization strategy of the present invention involves subjecting a non-macrocyclic intermediate to a carbon-carbon bond-forming reaction (e.g., an olefination reaction (e.g., Homer-Wadsworth-Emmons olefination), Dieckmann reaction, catalytic Ring-Closing Olefin Metathesis, or Nozaki-Hiyama-Kishi reaction) to afford a macrocyclic intermediate. The invention also provides compounds useful as intermediates in the synthesis of eribulin or a pharmaceutically acceptable salt thereof and methods for preparing the same.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: May 9, 2023
    Assignee: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Francis G. Fang, Dae-Shik Kim, Hyeong-Wook Choi, Charles E. Chase, Jaemoon Lee
  • Publication number: 20230140327
    Abstract: Provided herein is N-((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-5-(ethyl (tetrahydro-2H-pyran-4-yl)amino)-4-methyl-4?-(morpholinomethyl)-[1,1?-biphenyl]-3-carboxamide hydrobromide. Also provided herein is a particular polymorph form of this compound.
    Type: Application
    Filed: September 29, 2022
    Publication date: May 4, 2023
    Inventors: Kevin Wayne KUNTZ, Kuan-Chun Huang, Hyeong Wook Choi, Kristen Sanders, Steven Mathieu, Arani Chanda, Francis Fang
  • Patent number: 11542269
    Abstract: The invention provides methods utilizing Prins reaction in the preparation of compounds that may be useful as intermediates in the synthesis of halichondrin macrolides and analogs thereof. The invention also provides compounds that may be useful as intermediates in the synthesis of a halichondrin macrolides and methods for preparing the same.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: January 3, 2023
    Assignee: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Hyeong-Wook Choi, Francis G. Fang
  • Patent number: 11491163
    Abstract: Provided herein is N-((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-5-(ethyl (tetrahydro-2H-pyran-4-yl)amino)-4-methyl-4?-(morpholinomethyl)-[1,1?-biphenyl]-3-carboxamide hydrobromide. Also provided herein is a particular polymorph form of this compound.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: November 8, 2022
    Assignees: Epizyme, Inc., Eisai R&D Management Co., Ltd.
    Inventors: Kevin Wayne Kuntz, Kuan-Chun Huang, Hyeong Wook Choi, Kristen Sanders, Steven Mathieu, Arani Chanda, Francis Fang
  • Patent number: 11434246
    Abstract: We provide compounds given by Formula I, which is shown in FIG. 3, or pharmaceutically acceptable salts thereof, as well as formulations thereof and methods of use of those compounds and formulations for treatment of cancer.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: September 6, 2022
    Assignee: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Wanjun Zheng, Xiaojie Zhu, Hong Du, Maarten Postema, Yimin Jiang, Jing Li, Robert Yu, Hyeong-Wook Choi, Jaemoon Lee, Francis G. Fang, Daniel Custar
  • Publication number: 20220195437
    Abstract: Antisense oligonucleotides are provided. These antisense oligonucleotides are useful in the preparation of gapmers for inhibition of Tau mRNA transcription. Inhibition of Tau mRNA transcription may result in decrease of amounts of Tau protein in a subject, allowing treatment of diseases and disorders related to expression of Tau, including Alzheimer's disease and primary tauopathies.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 23, 2022
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Dae-Shik KIM, Hyeong-Wook CHOI, Francis G. FANG, Yoshinori TAKAHASHI, Kenji KIKUTA, Hikaru YOSHIMURA, Wataru ITANO, Toshiki KUROKAWA, Ryo DAIRIKI, Zhi ZHOU, Mingde SHAN
  • Patent number: 11339188
    Abstract: Provided herein are compounds useful for the treatment of cancer.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: May 24, 2022
    Assignee: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Dae-Shik Kim, Frank Fang, Atsushi Endo, Hyeong-wook Choi, Ming-Hong Hao, Xingfeng Bao, Kuan-Chun Huang
  • Publication number: 20210347779
    Abstract: We provide compounds given by Formula I, which is shown in FIG. 3, or pharmaceutically acceptable salts thereof, as well as formulations thereof and methods of use of those compounds and formulations for treatment of cancer.
    Type: Application
    Filed: January 5, 2021
    Publication date: November 11, 2021
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Wanjun ZHENG, Xiaojie ZHU, Hong DU, Maarten POSTEMA, Yimin JIANG, Jing LI, Robert YU, Hyeong-Wook CHOI, Jaemoon LEE, Francis G. FANG, Daniel CUSTAR
  • Patent number: 11136335
    Abstract: The invention provides methods for the synthesis of a halichondrin macrolides or analogs thereof through a cyclization reaction strategy. The strategy of the present invention involves subjecting an intermediate to Prins reaction conditions to afford a macrolide. The invention also provides compounds useful as intermediates in the synthesis of a halichondrin macrolides or analogs thereof and methods for preparing the same.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: October 5, 2021
    Assignee: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Charles E. Chase, Hyeong-Wook Choi, Atsushi Endo, Francis G. Fang, Dae-Shik Kim
  • Publication number: 20210205348
    Abstract: Provided herein are methods for the treatment of bladder cancer.
    Type: Application
    Filed: May 31, 2019
    Publication date: July 8, 2021
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Dae-Shik KIM, Frank FANG, Atsushi ENDO, Hyeong-Wook CHOI, Ming-Hong HAO, Xingfeng BAO, Kuan-Chun HUANG
  • Publication number: 20210188867
    Abstract: The invention provides methods for the synthesis of eribulin or a pharmaceutically acceptable salt thereof (e.g., eribulin mesylate) through a macrocyclization strategy. The macrocyclization strategy of the present invention involves subjecting a non-macrocyclic intermediate to a carbon-carbon bond-forming reaction (e.g., an olefination reaction (e.g., Homer-Wadsworth-Emmons olefination), Dieckmann reaction, catalytic Ring-Closing Olefin Metathesis, or Nozaki-Hiyama-Kishi reaction) to afford a macrocyclic intermediate. The invention also provides compounds useful as intermediates in the synthesis of eribulin or a pharmaceutically acceptable salt thereof and methods for preparing the same.
    Type: Application
    Filed: March 1, 2021
    Publication date: June 24, 2021
    Applicants: EISAI R&D MANAGEMENT CO., LTD., EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Francis G. FANG, Dae-Shik KIM, Hyeong-Wook CHOI, Charles E. CHASE, Jaemoon LEE
  • Publication number: 20210171555
    Abstract: We provide diastereomerically pure or substantially diastereomerically pure activated phosphoramidochloridate morpholino nucleosides, methods of their preparation, and methods of their use in stereospecific coupling for stereospecific synthesis of diastereomerically pure phosphorodiamidate morpholino oligomers (PMOs).
    Type: Application
    Filed: October 28, 2020
    Publication date: June 10, 2021
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Atsushi ENDO, Robert T. YU, Francis FANG, Hyeong Wook CHOI, Mingde SHAN
  • Patent number: 11028119
    Abstract: The present invention relates to methods and intermediates for synthesizing 2?-deoxy-2?,2?-difluorotetrahydrouridine compounds.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: June 8, 2021
    Assignee: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Hyeong-wook Choi, Steven Mathieu, Frank Fang, Bryan Matthew Lewis
  • Publication number: 20210137936
    Abstract: Provided herein is N-((4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl)-5-(ethyl (tetrahydro-2H-pyran-4-yl)amino)-4-methyl-4?-(morpholinomethyl)-[1,1?-biphenyl]-3-carboxamide hydrobromide. Also provided herein is a particular polymorph form of this compound.
    Type: Application
    Filed: September 25, 2020
    Publication date: May 13, 2021
    Inventors: Kevin Wayne KUNTZ, Kuan-Chun HUANG, Hyeong Wook CHOI, Kristen SANDERS, Steven MATHIEU, Arani CHANDA, Francis FANG
  • Patent number: 10981929
    Abstract: The invention provides methods for the synthesis of a halichondrin macrolides or analogs thereof through a cyclization reaction strategy. The strategy of the present invention involves subjecting an intermediate to Prins reaction conditions to afford a macrolide. The invention also provides compounds useful as intermediates in the synthesis of a halichondrin macrolides or analogs thereof and methods for preparing the same.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: April 20, 2021
    Assignee: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Charles E. Chase, Hyeong-Wook Choi, Atsushi Endo, Francis G. Fang, Dae-Shik Kim
  • Patent number: 10941148
    Abstract: We provide compounds given by Formula I, which is shown in FIG. 3, or pharmaceutically acceptable salts thereof, as well as formulations thereof and methods of use of those compounds and formulations for treatment of cancer.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: March 9, 2021
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Wanjun Zheng, Xiaojie Zhu, Hong Du, Maarten Postema, Yimin Jiang, Jing Li, Robert Yu, Hyeong-wook Choi, Jaemoon Lee, Frank Fang, Daniel Custar
  • Patent number: 10934307
    Abstract: The invention provides methods for the synthesis of eribulin or a pharmaceutically acceptable salt thereof (e.g., eribulin mesylate) through a macrocyclization strategy. The macrocyclization strategy of the present invention involves subjecting a non-macrocyclic intermediate to a carbon-carbon bond-forming reaction (e.g., an olefination reaction (e.g., Horner-Wadsworth-Emmons olefination), Dieckmann reaction, catalytic Ring-Closing Olefin Metathesis, or Nozaki-Hiyama-Kishi reaction) to afford a macrocyclic intermediate. The invention also provides compounds useful as intermediates in the synthesis of eribulin or a pharmaceutically acceptable salt thereof and methods for preparing the same.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: March 2, 2021
    Assignee: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Francis G. Fang, Dae-Shik Kim, Hyeong-Wook Choi, Charles E. Chase, Jaemoon Lee