Patents by Inventor Friedrich Cavagna

Friedrich Cavagna 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).

  • Use of bile acid derivatives conjugated with metal ion chelated complexes for the diagnostic assessment of microvascular permeability
    Publication number: 20070059246
    Abstract: The use of contrast agents of molecular weight lower than 5000 Dalton and including at least one residue of a biliary acid for the preparation of diagnostic contrast compositions for the microvascular permeability assessment is disclosed.
    Type: Application
    Filed: September 27, 2006
    Publication date: March 15, 2007
    Applicants: Bracco Imaging S.p.A., The Regents of the University of California
    Inventors: Friedrich Cavagna, Timothy Roberts
  • Use of bile acid derivatives conjugated with metal ion chelated complexes for the diagnostic assessment of microvascular permeability
    Patent number: 7128895
    Abstract: The use of contrast agents of molecular weight lower than 5000 Dalton and including at least one residue of a biliary acid for the preparation of diagnostic contrast compositions for the microvascular permeability assessment is disclosed.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: October 31, 2006
    Assignees: Bracco Imaging S.p.A., The Regents of the University of California
    Inventors: Friedrich Cavagna, Timothy P. L. Roberts
  • Use of bile acid derivatives conjugated with metal ion chelated complexes for the diagnostic assessment of microvascular permeability
    Publication number: 20030103904
    Abstract: The use of contrast agents of molecular weight lower than 5000 Dalton and including at least one residue of a biliary acid for the preparation of diagnostic contrast compositions for the microvascular permeability assessment is disclosed.
    Type: Application
    Filed: October 24, 2002
    Publication date: June 5, 2003
    Inventors: Friedrich Cavagna, Timothy P L Roberts
  • Polymers and copolymers of acrylic acid MRI of the digestive tract of patients
    Patent number: 5792445
    Abstract: Suspensions of either echogenic or magnetic particles in aqueous bioadhesive carriers effectively improve imaging by echography, respectively NMRI, of the digestive tract. Affinity of the compositions for the gastric mucosa can be adapted to the needs by appropriately selecting the carrier in function to inherent bioadhesive capacity: this technique leads to improved visualization of selected portions of the lumen.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: August 11, 1998
    Assignee: Bracco International B.V.
    Inventors: Herve Tournier, Roland Hyacinthe, Friedrich Cavagna
  • Mucoadhesive compositions for increasing the ultrasonic image contrast of the digestive tract
    Patent number: 5688490
    Abstract: Suspensions of either echogenic or magnetic particles in aqueous bioadhesive carriers effectively improve imaging by echography, respectively NMRI, of the digestive tract. Affinity of the compositions for the gastric mucosa can be adapted to the needs by appropriately selecting the carrier in function to inherent bioadhesive capacity: this technique leads to improved visualization of selected portions of the lumen.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: November 18, 1997
    Assignee: Bracco International B.V.
    Inventors: Herve Tournier, Roland Hyacinthe, Friedrich Cavagna
  • Compositions for increasing the image contrast in diagnostic investigations of the digestive tract of patients
    Patent number: 5653959
    Abstract: Suspensions of either echogenic or magnetic particles in aqueous bioadhesive carriers effectively improve imaging by echography, respectively NMRI, of the digestive tract. Affinity of the compositions for the gastric mucosa can be adapted to the needs by appropriately selecting the carrier in function to inherent bioadhesive capacity: this technique leads to improved visualization of selected portions of the lumen.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: August 5, 1997
    Assignee: Sintetica SA
    Inventors: Herve Tournier, Roland Hyacinthe, Friedrich Cavagna
  • Compositions for increasing the image contrast in diagnostic investigations of the digestive tract of patients
    Patent number: 5370901
    Abstract: Method of making an ingestible composition useful as a contrast enhancing agent in ultrasonic imaging of the digestive tract of humans and animals, wherein the composition has microballoons as contrast enhancing particles bound to an organic carrier phase, which when hydrated has an adhesive affinity for the gastrointestinal mucosa.Method includes grafting a silane coupler having at least two reactive functions to the microballoons through one of the reactive functions and binding the grafted microballoons to the carrier phase through another reactive function.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: December 6, 1994
    Assignee: Bracco International B.V.
    Inventors: Herve Tournier, Roland Hyacinthe, Friedrich Cavagna
  • Process for preparing acrylic acid or methacrylic acid ester polymer having a high isotacticity and a narrow molecular weight distribution
    Patent number: 4124751
    Abstract: Esters of acrylic acid and methacrylic acid may be polymerized with the aid of either free radical forming or ionically effective initiators. The stereospecificy of the polymers may be influenced by the selection of specific initiators; magnesium-organic compounds are suitable for the synthesis of isotactic polymers. Acrylic acid and methacrylic acid esters having a high degree of isotacticity and a narrow molecular weight distribution are obtained with the aid of substituted phenylmagnesium halides. They are suitable as gauge and as test substances.
    Type: Grant
    Filed: September 1, 1977
    Date of Patent: November 7, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Johann P. Fischer, Friedrich Cavagna, Eduard Duch, Karl-Friedrich Muck