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Serving leading biopharmaceutical companies globally:

Chinese Patent Office
Federal Trade Commission
Harvard Business School

Generated: December 18, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,927,640

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Summary for Patent: 4,927,640

Title: Controlled release beads having glass or silicon dioxide core
Abstract:Controlled release preparation containing a number of insoluble beads applied with one or more pharmaceutically active compounds, a method for the production thereof and the use in a treatment where a controlled release of a pharmaceutically active compound is needed.
Inventor(s): Dahlinder; Lars-Erik D. (Molndal, SE), Johansson; Mats O. (Goteborg, SE), Sandberg; John A. (Molndal, SE), Sjo (Monlycke, SE)
Assignee: Aktiebolaget Hassle (Molndal, SE)
Application Number:06/907,599
Patent Claim Types:
see list of patent claims
Compound; Delivery;

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Foreign Priority and PCT Information for Patent: 4,927,640

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Sweden8504720Oct 11, 1985

International Patent Family for Patent: 4,927,640

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria62409► Subscribe
Austria65391► Subscribe
Australia588630► Subscribe
Australia593038► Subscribe
Australia6317186► Subscribe
Australia6529686► Subscribe
Canada1293449► Subscribe
China1023293► Subscribe
China1025283► Subscribe
China86106588► 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:

Harvard Business School
Boehringer Ingelheim
Queensland Health
Cantor Fitzgerald

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