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Serving leading biopharmaceutical companies globally:

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Generated: December 18, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,695,393

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Summary for Patent: 4,695,393

Title: Magnetic particles for use in separations
Abstract:A process is provided for the preparation of magnetic particles to which a wide variety of molecules may be coupled. The magnetic particles can be dispersed in aqueous media without rapid settling and conveniently reclaimed from media with a magnetic field. Preferred particles do not become magnetic after application of a magnetic field and can be redispersed and reused. The magnetic particles are useful in biological systems involving separations.
Inventor(s): Chagnon; Mark S. (Lowell, MA), Groman; Ernest V. (Brookline, MA), Josephson; Lee (Arlington, MA), Whitehead; Roy A. (Hingham, MA)
Assignee: Advanced Magnetics Inc. (Cambridge, MA)
Application Number:06/744,435
Patent Claim Types:
see list of patent claims
Process; Formulation;

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International Patent Family for Patent: 4,695,393

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria70366► Subscribe
Canada1254028► Subscribe
Canada1266769► Subscribe
Germany3485332► Subscribe
Denmark237484► Subscribe
European Patent Office0125995► Subscribe
European Patent Office0357593► Subscribe
Japan2683786► Subscribe
JapanH076986► Subscribe
JapanH089995► 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 leading biopharmaceutical companies globally:

Chinese Patent Office

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