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Generated: May 23, 2017

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Details for Patent: 3,681,500

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Summary for Patent: 3,681,500

Abstract:Inhalation spray compositions for the treatment of obstructive disorders of the respiratory tract, comprising as an active ingredient a physiologically compatible quaternary salt of N-isopropyl-N-methyl-nortropine tropic acid ester, optionally in combination with a mucolytic and/or a bronchospasmolytic.
Inventor(s): Zeile; Karl (Ingelheim am Rhein, DT), Schulz; Werner (Ingelheim am Rhein, DT), Banholzer; Rolf (Ingelheim am Rhein, DT), Wick; Helmut (Ingelheim am Rhein, DT)
Assignee: Boehringer Ingelheim GmbH (Ingelheim am Rhine, DT)
Application Number:05/094,951
Patent Claim Types:
see list of patent claims
Use; Composition; Compound; Formulation;

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Foreign Priority and PCT Information for Patent: 3,681,500

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
P 19 62 496.5Dec 12, 1969

International Patent Family for Patent: 3,681,500

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Belgium760251► Subscribe
Canada942671► Subscribe
Germany1962496► Subscribe
Spain386308► Subscribe
France2081353► 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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