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Generated: April 28, 2017

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Details for Patent: 4,138,415

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Summary for Patent: 4,138,415

Title: 1,4-Bis(aminoalkylamino)-anthraquinones and leuco derivatives thereof
Abstract:This disclosure describes 1,4-bis(substituted-amino)-5,6-dihydroxyanthraquinones and 1,4,5-tris(substituted-amino)-8-hydroxyanthraquinones useful as chelating agents, as curing catalysts for epoxy resins, and for inhibiting the growth of transplanted mouse tumors.
Inventor(s): Murdock; Keith C. (Pearl River, NY), Child; Ralph G. (Pearl River, NY)
Assignee: American Cyanamid Company (Stamford, CT)
Application Number:05/903,292
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International Patent Family for Patent: 4,138,415

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina225884► Subscribe
AustriaA590678► Subscribe
Austria359484► Subscribe
Australia527103► Subscribe
Australia3877678► 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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