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Serving leading biopharmaceutical companies globally:

Fish and Richardson
US Army
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Generated: November 20, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,138,565

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Summary for Patent: 4,138,565

Title: Stable solutions and processes for their preparation
Abstract:Solutions of certain hydrogenated ergopeptide alkaloids in mixtures of pharmacologically acceptable alcohols and water have improved stability. Preferred solvents are mixtures of ethanol, propylene glycol and glycerol containing from 15-40% wt. of water and having dielectric constants between 34 and 46. With these solutions it is not essential to carry out the filing operation under an inert atmosphere.
Inventor(s): Ehrhardt; Lothar (Nuremberg, DE), Patt; Ludwig (Nuremberg, DE), Hartmann; Volker (Nuremberg, DE)
Assignee: Sandoz Ltd. (Basel, CH)
Application Number:05/833,784
Patent Claim Types:
see list of patent claims
Composition; Formulation; Compound; Use;

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Foreign Priority and PCT Information for Patent: 4,138,565

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany2524184May 31, 1975
Germany2735587Aug 6, 1977

International Patent Family for Patent: 4,138,565

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria355725► Subscribe
Austria364463► Subscribe
AustriaA390476► Subscribe
AustriaA567378► Subscribe
Australia1442276► Subscribe
Australia3867678► Subscribe
Australia508625► Subscribe
Australia525725► Subscribe
Belgium842348► Subscribe
Belgium869560► 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
Queensland Health
Cantor Fitzgerald
Chinese Patent Office

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