Patents by Inventor Zhaohua Dai

Zhaohua Dai 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).

  • Chiral piperidine and quinucledine ligands
    Patent number: 7491544
    Abstract: Zn(II) is selectively detected in a sample by contacting the sample with a tripodal ligand with a piperidine or quinuclidine scaffold, one of which acts as a zinc sensor, in which the rigidity of the ligand scaffold is increased. The rigidity of the ligand scaffold can be increased by adding aromatic groups or cyclic hydrocarbon groups. Examples of aromatic groups include naphthalene and the like. Examples of cyclic groups include nitrogen-substituted cyclohexane and cyclohexene such as piperidine.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: February 17, 2009
    Assignee: New York University
    Inventors: James Canary, Zhaohua Dai
  • Chiral piperidine and quinucledine ligands
    Publication number: 20040110304
    Abstract: Zn(II) is selectively detected in a sample by contacting the sample with a tripodal ligand with a piperidine or quinuclidine scaffold, one of which acts as a zinc sensor, in which the rigidity of the ligand scaffold is increased. The rigidity of the ligand scaffold can be increased by adding aromatic groups or cyclic hydrocarbon groups. Examples of aromatic groups include naphthalene and the like. Examples of cyclic groups include nitrogen-substituted cyclohexane and cyclohexene such as piperidine.
    Type: Application
    Filed: May 20, 2003
    Publication date: June 10, 2004
    Applicant: New York University
    Inventors: James Canary, Zhaohua Dai