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Serving leading biopharmaceutical companies globally:

Fish and Richardson
Federal Trade Commission

Generated: December 11, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,585,115

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Summary for Patent: 5,585,115

Title: Pharmaceutical excipient having improved compressability
Abstract:A microcrystalline cellulose-based excipient having improved compressibility, whether utilized in direct compression, dry granulation or wet granulation formulations, is disclosed. The excipient is an agglomerate of microcrystalline cellulose particles and from about 0.1% to about 20% silicon dioxide particles, by weight of the microcrystalline cellulose, wherein the microcrystalline cellulose and silicon dioxide are in intimate association with each other. The silicon dioxide utilized in the novel excipient has a particle size from about 1 nanometer to about 100 microns. Most preferably, the silicon dioxide is a grade of colloidal silicon dioxide.
Inventor(s): Sherwood; Bob E. (Amenia, NY), Hunter; Edward A. (Glenham, NY), Staniforth; John H. (Bath, GB2)
Assignee: Edward H. Mendell Co., Inc. (Patterson, NY)
Application Number:08/370,576
Patent Claim Types:
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International Patent Family for Patent: 5,585,115

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia5830399► Subscribe
Brazil9605245► Subscribe
Brazil9605329► Subscribe
Canada2183881► Subscribe
Canada2183882► Subscribe
Germany69627934► Subscribe
Germany69638015► Subscribe
Germany69638054► Subscribe
Denmark0752848► Subscribe
European Patent Office0749300► 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:

Fish and Richardson
US Department of Justice
Johnson and Johnson
Federal Trade Commission
US Army

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