Long-lasting aqueous dispersions or suspensions of pressure-resistant gas-filled microvesicles and methods for the preparation thereof
Patent 5578292 Issued on November 26, 1996. Estimated Expiration Date: 
January 30, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 30, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesUltrasonic image enhancement Carrier liquid solutions for the production of gas microbubbles, preparation thereof, and use thereof as contrast medium for ultrasonic diagnostics Contrast agents for ultrasonic imaging Porous inorganic ultrasound contrast agents Methods for selecting and using gases as ultrasound contrast media Patent #: 5393524 Inventors
AssigneeApplicationNo. 380588 filed on 01/30/1995US Classes:424/9.51, Liposome containing424/9.5, Ultrasound contrast agent424/9.52, Stable gas bubbles containing or intentional solubilized gas containing424/673, Elemental fluorine or fluorine compound514/744, Unsaturated aliphatic compound514/746, Plural halogenated hydrocarbon compounds514/752, Alkyne514/754, Plural benzene rings514/757Two or more halogenated hydrocarbonsExaminersPrimary: Kumar, ShailendraAttorney, Agent or FirmForeign Patent References
International ClassA61K 049/00Foreign Application Priority Data1992-01-23 EPAbstractOne can impart outstanding resistance against collapse under pressure to gas-filled microvesicle used as contrast agents in ultrasonic echography by using as fillers gases whose solubility in water, expressed in liter of gas by liter of water under standard conditions, divided by the square root of the molecular weight does not exceed 0.003.Other References
Field of SearchUltrasound contrast agentLiposome containing Elemental fluorine or fluorine compound Stable gas bubbles containing or intentional solubilized gas containing Unsaturated aliphatic compound Plural halogenated hydrocarbon compounds Alkyne Plural benzene rings Two or more halogenated hydrocarbons | |
