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Serving leading biopharmaceutical companies globally:

Boehringer Ingelheim
Cantor Fitzgerald
Fish and Richardson

Generated: November 19, 2017

DrugPatentWatch Database Preview

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:
see list of patent claims
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
Israel45291► Subscribe
JapanS5042087► Subscribe
JapanS5623587► Subscribe
Netherlands7409770► Subscribe
Sweden441753► 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:

Harvard Business School
Johnson and Johnson
Express Scripts
Chinese Patent Office

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