Patents by Inventor Joan F. Carvalho

Joan F. Carvalho 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).

  • Polyazamacrocycle chelating agents with amide linkages
    Patent number: 5556968
    Abstract: Macrocyclic chelating agents, optionally possessing more than one macrocyclic ring having at least two peptide linkages within the macrocyclic skeleton. The chelating agents are used for the preparation of paramagnetic metal chelates for use as MRI contrast agents.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: September 17, 1996
    Assignee: Nycomed Salutar, Inc.
    Inventors: Joan F. Carvalho, Shaun P. Crofts, John Varadarajan
  • Method of isolating texaphyrins
    Patent number: 5530122
    Abstract: A process for the isolation of sp.sup.3 reduced nonaromatic macrocyclic texaphyrin precursors, aromatic texaphyrin compounds and texaphyrin-metal complexes from aqueous salt solutions.
    Type: Grant
    Filed: August 23, 1994
    Date of Patent: June 25, 1996
    Assignee: Pharmacyclics, Inc.
    Inventors: William C. Dow, Joan F. Carvalho, Miguel Rosingana