Patents by Inventor Punna Reddy Ullapu

Punna Reddy Ullapu 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).

  • Salt of (R)-(-methylpyrrolidine--yl)methyl(-chloro--fluoro-[-biphenyl]--yl)carbamate and crystal form thereof
    Patent number: 10894768
    Abstract: The present invention relates to a novel salt of (R)-(1-methylpyrrolidine-3-yl)methyl(3?-chloro-4?-fluoro-[1,1?-biphenyl]-2-yl)carbamate and a crystal form thereof. Also, the novel salt of (R)-(1-methylpyrrolidine-3-yl)methyl(3?-chloro-4?-fluoro-[1,1?-biphenyl]-2-yl)carbamate and the crystal form thereof according to examples of the present invention have remarkably excellent stability, hygroscopicity and solubility.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: January 19, 2021
    Assignee: Dong-A St Co., Ltd.
    Inventors: Woo Young Kwak, Chang-Yong Shin, Punna Reddy Ullapu, Sun-Ho Choi, Min-Jung Lee, Ji-Su Kim
  • NOVEL SALT OF (R)-(1-METHYLPYRROLIDINE-3-YL)METHYL(3'-CHLORO-4'-FLUORO-[1,1'-BIPHENYL]-2-YL)CARBAMATE AND CRYSTAL FORM THEREOF
    Publication number: 20190194129
    Abstract: The present invention relates to a novel salt of (R)-(1-methylpyrrolidine-3-yl)methyl(3?-chloro-4?-fluoro-[1,1?-biphenyl]-2-yl)carbamate and a crystal form thereof. Also, the novel salt of (R)-(1-methylpyrrolidine-3-yl)methyl(3?-chloro-4?-fluoro-[1,1?-biphenyl]-2-yl)carbamate and the crystal form thereof according to examples of the present invention have remarkably excellent stability, hygroscopicity and solubility.
    Type: Application
    Filed: August 26, 2016
    Publication date: June 27, 2019
    Inventors: Woo Young Kwak, Chang-Yong Shin, Punna Reddy Ullapu, Sun-Ho Choi, Min-Jung Lee, Ji-Su Kim