Dipyridoxyl phosphate nmri contrast agents
CA 1322003 C · Owner: Rocklage, Scott M. · Inventors: Rocklage, Scott M.; Quay, Steven C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
59-, Abstract of the Invention, N,N'-bis-(pyridoxal-5-phosphate)-alkylenediamine- N,N'-diacetic acids, N,N'-bis-(pyridoxal-5-phosphate)- 1,2-cycloalkylenediamine-N,N'-diacetic acids and, N,N'-bis-(pyridoxal-5-phosphate)-1,2-arylenediamine- N,N'-diacetic acids, the corresponding monophosphate compounds and monoacetic acid compounds and their salts, and esters form stable highly soluble chelates with, paramagnetic metal ions and are highly effective NMRI, contrast agents. Preferred contrast agents are paramagnetic ion chelates of, N,N'-bis-(pyridoxal-5-phosphate)ethylenediamine-N,N'-diacetic acid, N,N'-bis-(pyridoxal- 5-phosphate)trans-1,2-cyclohexylenediamine-N,N'-diacetic acid, …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted September 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 7, 2010.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.