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Serving hundreds of leading biopharmaceutical companies globally:

US Department of Justice
US Army
AstraZeneca
Medtronic
Argus Health
Baxter
Chubb
Healthtrust
Mallinckrodt

Generated: May 25, 2018

DrugPatentWatch Database Preview

Details for Patent: 4,900,755

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Summary for Patent: 4,900,755
Title: Controlled release combination of carbidopa/levodopa
Abstract:A matrix or monolithic drug delivery system for the controlled release of carbidopa and levodopa consists of the two drugs uniformly dispersed in a polymer vehicle at a concentration that is greater than the solubility of either drug in the polymer. Treatment of parkinsonism with the controlled release formulation provides several advantages over treatment with the standard carbidopa/levidopa combinations presently employed.
Inventor(s): Dempski; Robert E. (Dresher, PA), Scholtz; Edward C. (King of Prussia, PA), Nibbelink; Donald W. (Lansdale, PA), Reines; Scott A. (New Hope, PA)
Assignee: Merck & Co. (Rahway, NJ)
Application Number:07/315,057
Patent Claim Types:
see list of patent claims
Formulation; Compound; Dosage form;

Drugs Protected by US Patent 4,900,755

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted

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International Family Members for US Patent 4,900,755

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Hong Kong 56191 ➤ Try a Free Trial
Canada 1318602 ➤ Try a Free Trial
Cyprus 1578 ➤ Try a Free Trial
Germany 3766308 ➤ Try a Free Trial
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving hundreds of leading biopharmaceutical companies globally:

Julphar
Baxter
Mallinckrodt
AstraZeneca
UBS
Chinese Patent Office
Teva
Express Scripts
Merck

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