Patents by Inventor Dong-Gyu Cho

Dong-Gyu Cho 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: 20220000832
    Abstract: The present invention relates to a pharmaceutical composition for preventing greying of hair, and preventing or treating poliosis or vitiligo. The pharmaceutical composition of the present invention increases intracellular melanin content, accelerates or increases melanoblast migration, pre-emptively prevents gray hair formation, and accelerates dark hair formation, and thus may be beneficially used in the prevention or alleviation of greying of hair, and in the prevention, alleviation or treatment of poliosis or vitiligo.
    Type: Application
    Filed: July 30, 2021
    Publication date: January 6, 2022
    Inventors: Eunki KIM, Jeonghyun SHIN, Dong-Gyu CHO, Hyangbok LEE, Sunju CHOI, Gayeong KIM
  • Patent number: 7723319
    Abstract: The present invention relates to an acyclic nucleoside phosphonate derivative which is useful as an antiviral agent (particularly, against hepatitis B virus), pharmaceutically acceptable salts, stereoisomers, and a process for the preparation thereof.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: May 25, 2010
    Assignee: LG Life Sciences Ltd.
    Inventors: Dong-Gyu Cho, Jae-Hong Lim, Jae-Taeg Hwang, Woo-Young Cho, Hyun-Sook Jang, Chang-Ho Lee, Tae-Saeng Choi, Chung-Mi Kim, Yong-Zu Kim, Tae-Kyun Kim, Seung-Joo Cho, Gyoung-Won Kim, Jong-Ryoo Choi, Jeong-Min Kim, Kee-Yoon Roh
  • Publication number: 20100004440
    Abstract: The present invention relates to an acyclic nucleoside phosphonate derivative which is useful as an antiviral agent (particularly, against hepatitis B virus), pharmaceutically acceptable salts, stereoisomers, and a process for the preparation thereof.
    Type: Application
    Filed: September 9, 2009
    Publication date: January 7, 2010
    Inventors: Dong-Gyu CHO, Jae-Hong LIM, Jae-Taeg HWANG, Woo-Young CHO, Hyun-Sook JANG, Chang-Ho LEE, Tae-Saeng CHOI, Chung-Mi KIM, Yong-Zu KIM, Tae-Kyun KIM, Seung-Joo CHO, Gyoung-Won KIM, Jong-Ryoo CHOI, Jeong-Min KIM, Kee-Yoon ROH
  • Patent number: 7605147
    Abstract: The present invention relates to an acyclic nucleoside phosphonate derivative represented by the following formula (1): in which represents single bond or double bond, R1, R2, R3, R7 and R8 are defined herein, Y represents —O—, —S—, —CH(Z)-, ?C(Z)-, —N(Z)-, ?N—, or —SiH(Z)-, wherein Z represents hydrogen, hydroxy or halogen, or represents C1-C7-alkyl, C1-C5-alkoxy, allyl, hydroxy-C1-C7-alkyl, C1-C7-aminoalkyl or phenyl, Q represents a group having the following formula: wherein X1, and X2 independently of one another represent hydrogen, amino, hydroxy or halogen, or represent C1-C7-alkyl, C1-C5-alkoxy, allyl, hydroxy-C1-C7-alkyl, phenyl or phenoxy each of which is optionally substituted by nitro or C1-C5-alkoxy, or represent C6-C10-arylthio which is optionally substituted by nitro, amino, C1-C6-alkyl or C1-C4-alkoxy, or represent C6-C12-arylamino, C1-C7-alkylamino, di(C1-C7-alkyl)amino, C3-C6-cycloalkylamino or a structure of wherein n denotes an integer of 1 or 2 and Y1 represents O, CH2 or N—
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: October 20, 2009
    Assignee: LG Life Sciences Ltd.
    Inventors: Dong-Gyu Cho, Jae-Hong Lim, Jae-Taeg Hwang, Woo-Young Cho, Hyun-Sook Jang, Chang-Ho Lee, Tae-Saeng Choi, Chung-Mi Kim, Yong-Zu Kim, Tae-Kyun Kim, Seung-Joo Cho, Gyoung-Won Kim, Jong-Ryoo Choi, Jeong-Min Kim, Kee-Yoon Roh
  • Patent number: 7157448
    Abstract: The present invention relates to a nucleoside phosphonate derivative represented by formula (1): pharmaceutically acceptable salts, and stereoisomers. This nucleoside phosphonate derivative is useful as an antiviral agent, particularly, against hepatitis B virus. Also disclosed are processes for the preparation of the nucleoside phosphonate derivative. Also disclosed are methods treating hepatitis B by administering a nucleoside phosphonate derivative of formula (1).
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: January 2, 2007
    Assignee: LG Life Sciences Ltd.
    Inventors: Jong-Ryoo Choi, Jeong-Min Kim, Kee-Yoon Roh, Dong-Gyu Cho, Jae-Hong Lim, Jae-Taeg Hwang, Woo-Young Cho, Hyun-Sook Jang, Chang-Ho Lee, Tae-Saeng Choi, Chung-Mi Kim, Yong-Zu Kim, Tae-Kyun Kim, Seung-Joo Cho, Gyoung-Won Kim
  • Publication number: 20060293284
    Abstract: The present invention relates to an acyclic nucleoside phosphonate derivative which is useful as an antiviral agent (particularly, against hepatitis B virus), pharmaceutically acceptable salts, stereoisomers, and a process for the preparation thereof.
    Type: Application
    Filed: June 20, 2006
    Publication date: December 28, 2006
    Inventors: Dong-Gyu Cho, Jae-Hong Lim, Jae-Taeg Hwang, Woo-Young Cho, Hyun-Sook Jang, Chang-Ho Lee, Tae-Saeng Choi, Chung-Mi Kim, Yong-Zu Kim, Tae-Kyun Kim, Seung-Joo Cho, Gyoung-Won Kim, Jong-Ryoo Choi, Jeong-Min Kim, Kee-Yoon Roh
  • Publication number: 20060111324
    Abstract: The present invention relates to (+)-trans-isomers of (1-phosphonomethoxy-2-alkylcyclopropyl)methyl nucleoside derivatives of the formula (1) which are useful as an antiviral agent (particularly, against hepatitis B virus), pharmaceutically acceptable saltss, hydrates, or solvates thereof, and processes for the preparation of stereoisomers of the compounds of the formula (1), and a composition for the treatment of viral diseases (particularly, against hepatitis B virus) comprising (+)-trans-isomer of the compound of the formula (1), pharmaceutically acceptable salt, hydrate, or solvate thereof as an active substance.
    Type: Application
    Filed: September 22, 2003
    Publication date: May 25, 2006
    Applicant: LG Life Sciences
    Inventors: Jong-Ryoo Choi, Jae-Taeg Hwang, Dong-Gyu Cho, Kee-Yoon Roh, Chung-Hyung Kim, Chung-Mi Kim, Min-Joon Han, Jeong-Min Kim, Woo-Young Cho, Gyoung-Won Kim, Sin-Byoung Ahn
  • Publication number: 20040063668
    Abstract: The present invention relates to an acyclic nucleoside phosphonate derivative which is useful as an antiviral agent (particularly, against hepatitis B virus), pharmaceutically acceptable salts, stereoisomers, and a process for the preparation thereof.
    Type: Application
    Filed: June 18, 2003
    Publication date: April 1, 2004
    Inventors: Jong-Ryoo Choi, Jeong-Min Kim, Kee-Yoon Roh, Dong-Gyu Cho, Jae-Hong Lim, Jae-Taeg Hwang, Woo-Young Cho, Hyun-Sook Jang, Chang-Ho Lee, Tae-Saeng Choi, Chung-Mi Kim, Yong-Zu Kim, Tae-Kyun Kim, Seung-Joo Cho, Gyoung-Won Kim