Patents by Inventor Wei-Jen Peng

Wei-Jen Peng 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).

  • Tripodal carboxamide ligands for MRI contrast agents
    Patent number: 5869026
    Abstract: Novel ligands for use in MRI contrast agents and which have the formula ##STR1## wherein R.sub.1 -R.sub.14, M", l, m, and n are defined herein.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: February 9, 1999
    Assignee: Hoechst Celanese Corp.
    Inventors: Wei-Jen Peng, David E. Reichert
  • Tripodal aromatic heterocycle carboxamide MRI contrast agents
    Patent number: 5869025
    Abstract: A composition of matter having the formula ##STR1## wherein R.sub.1 -R.sub.14, M, l, m, and n are defined herein and which have application as MRI contrasting agents.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: February 9, 1999
    Assignees: Hoechst Celanese Corporation, Washington University
    Inventors: Wei-Jen Peng, David E. Reichert
  • MRI diagnostic procedures using tripodal pyridinyl metal complexes
    Patent number: 5858329
    Abstract: A method of performing an NMR diagnostic procedure in a patient in need of the same comprising administering to the patient an effective amount of an NMR diagnostic medium and then exposing the patient to an NMR measurement step to which the diagnostic medium is responsive thereby imaging at least a portion of the patient's body, wherein the diagnostic medium comprises a composition of matter which contains a compound which has the structural formula: ##STR1## wherein R, R.sub.1 -R.sub.10 and M are defined herein.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: January 12, 1999
    Assignee: Hoechst Celanese Corporation
    Inventors: Wei-Jen Peng, Humberto Ramos, Jr.
  • Thio-substituted pyridines as MRI ligand precursors
    Patent number: 5824288
    Abstract: Novel precursors of ligands or use in MRI contrast agents and which have the formula ##STR1## wherein R.sub.2-R.sub.10 are defined herein.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: October 20, 1998
    Assignee: Hoechst Celanese Corporation
    Inventors: Wei-Jen Peng, Humberto Ramos, Jr., Daniel A. Aguilar
  • Tripodal pyridine ligands as MRI contrast agents
    Patent number: 5820851
    Abstract: A composition of matter having the following ##STR1## wherein R, R.sub.1 -R.sub.10 and M are defined herein.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: October 13, 1998
    Assignee: Hoechst Celanese Corporation
    Inventors: Wei-Jen Peng, Humberto Ramos, Jr.