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Serving hundreds of leading biopharmaceutical companies globally:

Express Scripts
Argus Health
Citi
US Department of Justice
Johnson and Johnson
Julphar
Moodys
Colorcon
Cerilliant

Generated: May 22, 2018

DrugPatentWatch Database Preview

Details for Patent: 4,728,721

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Summary for Patent: 4,728,721
Title: Polymer, production and use thereof
Abstract:The present invention provides a biodegradable high molecular polymer characterized in that the content of water-soluble low molecular compounds, as calculated on the assumption that said compounds each is a monobasic acid, is less than 0.01 mole per 100 grams of said high molecular polymer. The thus-obtained molecular polymer has good aging stability and can be used advantageously as an excipient for pharmaceutical preparations.
Inventor(s): Yamamoto; Masaki (Osaka, JP), Okada; Hiroaki (Osaka, JP), Ogawa; Yasuaki (Osaka, JP), Miyagawa; Tsutomu (Saitama, JP)
Assignee: Takeda Chemical Industries, Ltd. (Osaka, JP) Wako Pure Chemical Industries, Ltd. (Osaka, JP)
Application Number:06/858,040
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 4,728,721
Patent Claim Types:
see list of patent claims
Composition; Compound; Formulation; Use;

Drugs Protected by US Patent 4,728,721

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: 4,728,721

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan60-97617May 07, 1985

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Serving hundreds of leading biopharmaceutical companies globally:

Teva
Chubb
Julphar
Moodys
Express Scripts
QuintilesIMS
Merck
AstraZeneca
Baxter

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