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Serving leading biopharmaceutical companies globally:

Argus Health
US Department of Justice
Chinese Patent Office
Johnson and Johnson

Generated: December 18, 2017

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Details for Patent: 3,939,178

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Summary for Patent: 3,939,178

Title: Certain pyrano [3,4-b]indoles and thiopyrano[3,4-b]indoles
Abstract:Indole derivatives characterized by having a 1,3,4,9-tetrahydropyrano[3,4-b]indole or 1,3,4,9-tetrahydrothiopyrano[3,4-b]indole nucleus bearing a substituent in position 1, said substituent incorporating an acid, ester or amide function therein, are disclosed. The nucleus is further substituted at position 1 and may be optionally substituted at positions 3, 4, 5, 6, 7, 8, and 9. The derivatives are useful antiinflammatory, analgesic, antibacterial and antifungal agents and methods for their preparation and use are also disclosed.
Inventor(s): Demerson; Christopher A. (St. Laurent, CA), Humber; Leslie G. (Dollard des Ormeaux, CA), Dobson; Thomas A. (Dollard des Ormeaux, CA), Jirkovsky; Ivo L. (Montreal, CA)
Assignee: American Home Products Corporation (New York, NY)
Application Number:05/289,714
Patent Claim Types:
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International Patent Family for Patent: 3,939,178

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina198787► Subscribe
Australia4255472► Subscribe
Australia463079► Subscribe
Belgium784284► Subscribe
Bulgaria60660► Subscribe
Canada1006875► Subscribe
Switzerland580101► Subscribe
Czechoslovakia178409► Subscribe
Germany2226340► Subscribe
Denmark155328► 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:

US Department of Justice
Fish and Richardson
Cantor Fitzgerald
Farmers Insurance

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