Patents Examined by Dees: Jose' G.
  • Heavy metal clusters for use as imaging agents
    Patent number: 5417958
    Abstract: The present invention relates to novel compounds for use as imaging agents. In particular, the present invention relates to imaging agents comprising a heavy metal cluster having 2 to 8 atoms of the same of different heavy metal elements, and at least one coordinating ligand having 1 to 8 atoms which bond to the cluster, and a number of supporting atoms making up the framework of the ligand.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: May 23, 1995
    Assignee: Mallinckrodt Medical, Inc.
    Inventors: Edward A. Deutsch, Karen F. Deutsch, Dennis L. Nosco
  • Process for preparing distyrylbiphenyl compounds
    Patent number: 5332861
    Abstract: Process for preparing distyrylbiphenyl compounds by condensation of a substituted or unsubstituted 4,4'-bis(dialkoxyphosphonomethyl)biphenyl compound with a substituted or unsubstituted benzaldehyde in liquid ammonia as the solvent and in the presence of strong bases; and the use of these distyrylbiphenyl compounds as fluorescent whitening agents.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: July 26, 1994
    Assignee: Ciba-Geigy Corporation
    Inventor: Leonardo Guglielmetti