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Serving leading biopharmaceutical companies globally:

Chinese Patent Office
Argus Health
Express Scripts
Fish and Richardson

Generated: October 23, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,772,475

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Summary for Patent: 4,772,475

Title: Controlled-release multiple units pharmaceutical formulation
Abstract:A pharmaceutical controlled-release individual unit or multiple units formulation in which the individual unit comprises a granulation product obtained by adding a release controlling agent to a mixture of a physiologically active substance and units-forming substance(s) and granulating and resultant mixture, said granulation product (granules) being substantially not disintegrated but gradually releasing the physiologically active substance in the gastrointestinal tract.
Inventor(s): Fukui; Muneo (Saitama, JP), Tomuro; Kouji (Saitama, JP), Masuyama; Shigeru (Saitama, JP), Kajiyama; Atsushi (Saitama, JP), Hikosaka; Tamio (Saitama, JP), Aruga; Masayoshi (Saitama, JP), Higuchi; Saburo (Saitama, JP), Soeishi; Yoshiaki (Tokyo, JP)
Assignee: Yamanouchi Pharmaceutical Co., Ltd. (Tokyo, JP)
Application Number:06/833,961
Patent Claim Types:
see list of patent claims
Formulation; Compound;

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Foreign Priority and PCT Information for Patent: 4,772,475

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan60-46180Mar 08, 1985

International Patent Family for Patent: 4,772,475

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada1264293► Subscribe
Germany3650657► Subscribe
Germany3688532► Subscribe
European Patent Office0194838► Subscribe
European Patent Office0533297► Subscribe
Spain552794► Subscribe
Spain8800041► Subscribe
JapanH0772129► Subscribe
JapanS629► Subscribe
South Korea930007245► 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:

US Department of Justice
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