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Details for Patent: 4,579,855

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Summary for Patent: 4,579,855

Title: Melfloquin hydrochloride
Abstract:Mefloquin hydrochloride in the form of modification E as characterized by IR spectrum and X-ray diffraction pattern, as well as a process for the preparation thereof by treating mefloquin hydrochloride, comprising at least partially another modification, that is, mefloquin hydrochloride which is not pure mefloquin hydrochloride in the form of modification E, with methanol and/or ethanol, in the presence of less than 30 volume/percent of water.
Inventor(s): Bomches; Helmut (Aesch, CH), Hardegger; Bruno (Riehen, CH)
Assignee: Hoffmann-La Roche Inc. (Nutley, NJ)
Application Number:06/655,813
Patent Claim Types:
see list of patent claims
Compound; Composition; Use;

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Foreign Priority and PCT Information for Patent: 4,579,855

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Switzerland5459/83Oct 07, 1983

International Patent Family for Patent: 4,579,855

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria55387► Subscribe
Bulgaria60836► Subscribe
Germany3482926► Subscribe
European Patent Office0137375► Subscribe
JapanH0255432► 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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