Patents by Inventor Chengyun Guo

Chengyun Guo 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).

  • Morphinan derivatives for the treatment of drug overdose
    Patent number: 9119848
    Abstract: The instant application relates to morphinan derivatives of Formula I with sustained effectiveness in treating drug toxicity and overdose:
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: September 1, 2015
    Assignee: Alkermes Pharma Ireland Limited
    Inventors: Bernard Silverman, Fen-Ni Fu, Chengyun Guo
  • VARIABLE DISPLACEMENT DUAL VANE PUMP
    Publication number: 20100119396
    Abstract: The present invention is a variable displacement pump having an inner rotor rotatable about a first axis and having at least two slots. The pump also has at least two vanes, each located in a distinct one of the at least two slots. The pump also has an outer rotor rotatable about a second axis, operably associated with the inner rotor, the outer rotor having two or more recesses, each configured to receive one of the vanes. The pump also includes an expandable chamber formed by the outer rotor and the inner rotor, an eccentric ring surrounding the outer rotor, and a housing. The eccentric ring is located within the housing for adjusting the relative relationship between the first axis and the second axis in order to vary the displacement of the pump.
    Type: Application
    Filed: April 10, 2008
    Publication date: May 13, 2010
    Inventor: Chengyun Guo