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Serving leading biopharmaceutical companies globally:

McKinsey
US Army
Chinese Patent Office
Citi
Harvard Business School
Teva
Julphar
Merck
Boehringer Ingelheim
Queensland Health

Generated: January 16, 2018

DrugPatentWatch Database Preview

Details for Patent: 4,757,128

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Summary for Patent: 4,757,128
Title: High molecular weight polyanhydride and preparation thereof
Abstract:High molecular weight polyanhydrides, defined as polyanhydrides having a molecular weight average greater than 20,000 or an intrinsic viscosity of greater than 0.3 dl/g in an organic solvent at room temperature, are formed by melt polycondensation of highly pure isolated prepolymers under optimized reaction conditions, particularly time and temperature with removal of the condensation product. Higher molecular weights are obtained by inclusion of a catalyst with the prepolymers in the melt polymerization. Catalysts used for transterification, ring opening polymerization and related polymerizations may be utilized. The high molecular weight polyanhydrides have improved physico-mechanical properties and are especially well suited for biomedical applications, particularly in controlled release devices for drug delivery.
Inventor(s): Domb; Abraham J. (Brookline, MA), Langer; Robert S. (Somerville, MA)
Assignee: Massachusetts Institute of Technology (Cambridge, MA)
Application Number:06/892,809
Patent Claim Types:
see list of patent claims
Compound; Composition; Use;

Drugs Protected by US Patent 4,757,128

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 Patents Family Members for US Patent 4,757,128

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 141804 ➤ Subscribe
Austria 145657 ➤ Subscribe
Canada 1274339 ➤ Subscribe
Canada 2056384 ➤ Subscribe
Germany 260415 ➤ Subscribe
Germany 3751964 ➤ Subscribe
Germany 69028303 ➤ Subscribe
Denmark 0476045 ➤ Subscribe
European Patent Office 0260415 ➤ Subscribe C990036 Netherlands ➤ Subscribe
European Patent Office 0260415 ➤ Subscribe SPC/GB01/013 United Kingdom ➤ Subscribe
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving leading biopharmaceutical companies globally:

AstraZeneca
Mallinckrodt
Farmers Insurance
Cerilliant
Boehringer Ingelheim
Dow
Baxter
Argus Health
Chinese Patent Office

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

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