Patents Assigned to Tianjin Hemay Pharmaceutical Co., Ltd.
  • Crystal forms of thiophene derivatives
    Patent number: 12180222
    Abstract: Disclosed are polymorph, crystal form III and crystal form IV of compound (S)—N-[5-[1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-4,6-dioxo-5,6-dihydro-4H-thieno[3,4-c]pyrrole-1-yl]acetamide.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: December 31, 2024
    Assignee: Tianjin Hemay Pharmaceutical Co., Ltd
    Inventors: Donglei Zhang, Liyu Wang, Xingwen Li
  • Isoindole derivative
    Patent number: 11767295
    Abstract: Disclosed is a compound of formula (I) and a stereoisomer thereof: wherein R1, R2, R3 and R4 are as defined in the present disclosure.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: September 26, 2023
    Assignee: TIANJIN HEMAY PHARMACEUTICAL CO., LTD.
    Inventor: Hesheng Zhang
  • Solid forms of thiophene derivatives
    Patent number: 11396518
    Abstract: Disclosed is an amorphous solid form of compound (S)—N-[5-[1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-4,6-dioxo-5,6-dihydro-4H-thieno[3,4-c]pyrrole-1-yl]acetamide.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: July 26, 2022
    Assignee: TIANJIN HEMAY PHARMACEUTICAL CO., LTD.
    Inventors: Donglei Zhang, Liyu Wang, Xingwen Li
  • Crystal forms of thiophene derivatives
    Patent number: 11274104
    Abstract: Disclosed is crystal form II of compound (S)—N-[5-[1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-4,6-dioxo-5,6-dihydro-4H-thieno[3,4-c]pyrrole-1-yl]acetamide.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: March 15, 2022
    Assignee: Tianjin Hemay Pharmaceutical Co., Ltd
    Inventors: Donglei Zhang, Liyu Wang, Yukun Chang
  • Thiophene derivatives
    Patent number: 10611775
    Abstract: Disclosed is a compound of formula (I), wherein R1, R2, R3, R4, R5, R6, R7 and R8 are as defined in the present application.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: April 7, 2020
    Assignee: Tianjin Hemay Pharmaceutical Co., Ltd.
    Inventors: Hesheng Zhang, Guanghuai Zeng, Yifei Gao