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Serving leading biopharmaceutical companies globally:

Harvard Business School
Queensland Health
Federal Trade Commission
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Generated: November 23, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,001,323

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Summary for Patent: 4,001,323

Title: Water-soluble, non-ionizing hydroxy-containing amide derivatives of 2,4,6-triiodo-isophthalic acid
Abstract:Compounds of the formula ##STR1## wherein R and R.sub.1 are 1,3-dihydroxyisopropyl or 2,3-dihydroxypropyl, and R.sub.2 is hydrogen or hydroxyl, are readily water-soluble and of sufficiently low toxicity for use as radiopaque materials in the radiography of body cavities as in urography, angiography, ventriculography, and myelography.
Inventor(s): Felder; Ernst (Riva S. Vitale, CH), Pitre; David E. (Milan, IT)
Assignee: Savac AG (Chur, CH)
Application Number:05/634,836
Patent Claim Types:
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Foreign Priority and PCT Information for Patent: 4,001,323

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Switzerland16588/74Dec 13, 1974

International Patent Family for Patent: 4,001,323

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina211853► Subscribe
AustriaA925075► Subscribe
Austria340582► Subscribe
AustriaA925175► Subscribe
Austria342579► Subscribe
AustriaA481277► Subscribe
Austria349449► Subscribe
AustriaA481377► Subscribe
Austria349450► Subscribe
Australia475785► 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
Queensland Health

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