Patents by Inventor Tianhua Ma

Tianhua Ma 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).

  • COATED GRANULE, SOLID DISPERSION, AND PREPARATION CONTAINING VORTIOXETINE HYDROBROMIDE FOR ORAL TASTE MASKING
    Publication number: 20220249466
    Abstract: A coated granule, a solid dispersion, a composition, and a preparation for oral masking, which improve the taste masking effect of vortioxetine hydrobromide, and improve the patient adherence and compliance.
    Type: Application
    Filed: September 3, 2020
    Publication date: August 11, 2022
    Applicant: Seasons Biotechnology (Taizhou) Co., Ltd.
    Inventors: Qiang Jia, Fa Huang, Ru Wang, Jinjin Yang, Youbing Wei, Tianhua Ma, Yunzhong Wang, Yanyun Hu, Changhu Chu
  • Method and catalyst for preparing aniline compounds and use thereof
    Patent number: 10584093
    Abstract: The present invention provides a method for preparing aniline compounds, and also provides a kind of catalyst and use thereof. This method for synthesizing an aniline compound in the invention includes following steps: use molybdenum oxide and activated carbon as catalyst, hydrazine hydrate as reducing agent, then reduce aromatic nitro compounds to aniline compounds. This method is green and high efficiency, and easy to be applied in industry.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 10, 2020
    Assignee: Seasons Biotechnology (Taizhou) Co., Ltd.
    Inventors: Qiang Jia, Chi Ma, Tianhua Ma, Zhengwei Yang
  • METHOD AND CATALYST FOR PREPARING ANILINE COMPOUNDS AND USE THEREOF
    Publication number: 20190100486
    Abstract: The present invention provides a method for preparing aniline compounds, and also provides a kind of catalyst and use thereof. This method for synthesizing an aniline compound in the invention includes following steps: use molybdenum oxide and activated carbon as catalyst, hydrazine hydrate as reducing agent, then reduce aromatic nitro compounds to aniline compounds. This method is green and high efficiency, and easy to be applied in industry.
    Type: Application
    Filed: September 26, 2018
    Publication date: April 4, 2019
    Applicant: Seasons Biotechnology (Taizhou) Co., Ltd.
    Inventors: Qiang JIA, Chi MA, Tianhua MA, Zhengwei YANG
  • Intermediates of sitagliptin and preparation process thereof
    Patent number: 9187419
    Abstract: Disclosed are intermediates of Sitagliptin, a preparation process thereof, and a process for synthesizing Sitagliptin using these intermediates. Sitagliptin is synthesized by using chiral amino compounds as a raw material, without having to build a chiral center with a chiral asymmetric catalytic hydrogenation, and high-pressure hydrogenation is avoided.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: November 17, 2015
    Assignee: ZHEJIANG HISOAR PHARMACEUTICAL CO., LTD.
    Inventors: Xianhua Pan, Weijin Li, Qunhui Zhang, Libo Ruan, Wansheng Yu, Fei Deng, Tianhua Ma, Mingwang Huang, Minhuan He
  • INTERMEDIATES OF SITAGLIPTIN AND PREPARATION PROCESS THEREOF
    Publication number: 20130281695
    Abstract: Disclosed are intermediates of Sitagliptin, a preparation process thereof, and a process for synthesizing Sitagliptin using these intermediates. Sitagliptin is synthesized by using chiral amino compounds as a raw material, without having to build a chiral center with a chiral asymmetric catalytic hydrogenation, and high-pressure hydrogenation is avoided.
    Type: Application
    Filed: December 1, 2011
    Publication date: October 24, 2013
    Applicant: ZHEJIANG HISOAR PHARMACEUTICAL CO., LTD.
    Inventors: Xianhua Pan, Weijin Li, Qunhui Zhang, Libo Ruan, Wansheng Yu, Fei Deng, Tianhua Ma, Mingwang Huang, Minhuan He