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Details for Patent: 4,179,337

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Summary for Patent: 4,179,337

Title: Non-immunogenic polypeptides
Abstract:Polypeptides such as enzymes and insulin are coupled to polyethylene glycol or polypropropylene glycol having a molecular weight of 500 to 20,000 daltons to provide a physiologically active non-immunogenic water soluble polypeptide composition. The polyethylene glycol or polypropylene glycol protect the polypeptide from loss of activity and the composition can be injected into the mammalian circulatory system with substantially no immunogenic response.
Inventor(s): Davis; Frank F. (East Brunswick, NJ), Van Es; Theodorus (Piscataway, NJ), Palczuk; Nicholas C. (Bound Brook, NJ)
Application Number:05/819,831
Patent Claim Types:
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Composition; Compound; Process;

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International Patent Family for Patent: 4,179,337

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada1033673► Subscribe
Switzerland616942► Subscribe
Germany2433883► Subscribe
France2313939► Subscribe
United Kingdom1469472► 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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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.