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Serving leading biopharmaceutical companies globally:

Colorcon
McKinsey
US Department of Justice
Johnson and Johnson
Federal Trade Commission
US Army
Baxter
AstraZeneca
Deloitte
Fuji

Generated: February 23, 2018

DrugPatentWatch Database Preview

Details for Patent: 6,699,503

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Summary for Patent: 6,699,503
Title: Hydrogel-forming sustained-release preparation
Abstract:The invention provides a hydrogen-type sustained-release preparation comprising (1) at least one drug, (2) an additive which insures a penetration of water into the core of the preparation and (3) a hydrogen-forming polymer, wherein said preparation is capable of undergoing substantially complete gelation during its stay in the upper digestive tract such as stomach and small intestine and is capable of releasing the drug in the lower digestive tract including colon. By the preparation of the invention, the drug is efficiently released and absorbed even in the colon so that a steady and sustained release effect can be achieved.
Inventor(s): Sako; Kazuhiro (Shizuoka, JP), Nakashima; Hiroshi (Shizuoka, JP), Sawada; Toyohiro (Shizuoka, JP), Okada; Akira (Shizuoka, JP), Fukui; Muneo (Shizuoka, JP)
Assignee: Yamanuchi Pharmaceutical Co., Ltd. (Tokyo, JP)
Application Number:09/702,880
Patent Claim Types:
see list of patent claims
Compound;

Drugs Protected by US Patent 6,699,503

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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Foreign Priority and PCT Information for Patent: 6,699,503

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan4-274979Sep 18, 1992
Japan5-165263Jun 08, 1993

International Patents Family Members for US Patent 6,699,503

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 219933 ➤ Sign Up
Australia 682827 ➤ Sign Up
Australia 4983893 ➤ Sign Up
Bulgaria 61861 ➤ Sign Up
Bulgaria 99503 ➤ Sign Up
Canada 2144077 ➤ Sign Up
China 1091004 ➤ Sign Up
China 1048397 ➤ Sign Up
Czech Republic 9500679 ➤ Sign Up
Czech Republic 291495 ➤ Sign Up
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving hundreds of leading biopharmaceutical companies globally:

Queensland Health
Cantor Fitzgerald
Federal Trade Commission
Baxter
Harvard Business School
Colorcon
Fish and Richardson
Healthtrust
Julphar

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