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Generated: June 25, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,770,183

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Summary for Patent: 4,770,183

Title: Biologically degradable superparamagnetic particles for use as nuclear magnetic resonance imaging agents
Abstract:This invention relates to an improved method for obtaining the in vivo MNR image of an organ or tissue of an animal or human subject. More specifically, this invention relates to the use of small (about 10 to about 5,000 angstroms in diameter) biodegradable superparamagnetic metal oxide particles for use as imaging agents. The particles, which may be uncoated or surrounded by a stable polymeric coating, can be mixed with a physiologically acceptable medium to form a uniform dispersoid which can be administered to the subject by a variety of routes. Once administered, the particles collect in the target organ or tissue where they will remain for a time sufficiently long for an image to be obtained, but are ultimately metabolized or cleared within about 7 days.
Inventor(s): Groman; Ernest V. (Brookline, MA), Josephson; Lee (Arlington, MA)
Assignee: Advanced Magnetics Incorporated (Cambridge, MA)
Application Number:06/882,044
Patent Claim Types:
see list of patent claims
Use; Composition; Dosage form;

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International Patent Family for Patent: 4,770,183

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria135920► Subscribe
Austria139431► Subscribe
Austria142891► Subscribe
Austria143604► Subscribe
Austria143814► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving 500+ biopharmaceutical companies globally:

Moodys
QuintilesIMS
Dow
Cipla
Accenture
Citi
Farmers Insurance
Merck
Covington
Cantor Fitzgerald

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