Patents by Inventor Wu Qiu Ye

Wu Qiu Ye 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).

  • 9H-imidazo[1,2-a]purin-9-one compounds
    Patent number: 6887997
    Abstract: Fused tri-heterocyclic compounds of formula: R1 is H or alkyl; R2 is H, alkyl, alkenyl, aryl, heteroaryl, cyclyl, or heterocyclyl; R3 and R4, independently, is H, alkyl, alkenyl, aryl, heteroaryl, cyclyl, heterocyclyl, or (CRaRb)mX(CRcRd)nY; in which X is a bond, O, S, or NRe; Y is alkoxy, aryloxy, heteroaryloxy, OC(O)Re, C(O)Re, N(ReRe?), NReC(O)Re?, S(O)2Re, or SRe; each of m and n, independently, is 1, 2, 3, 4, or 5; each of Ra, Rb, Rc, Rd, Re, and Re?, independently, is H, alkyl, aryl, heteroaryl, cyclyl, or heterocyclyl; and R5 is H or halogen.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: May 3, 2005
    Assignee: Yung Shin Pharmaceutical Ind. Co., Ltd.
    Inventors: Fang Yu Lee, Fang Chen Lee, Chang An Yang, Ma Wei Yong, Xu Ai Wu, Wu Qiu Ye, Xiao Xu Hua