Iodinated wetting agents
CA 2108061 A1 · Owner: Mcintire, Gregory L. · Inventors: Bacon, Edward R.; Mcintire, Gregory L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds having the structure (Z?- COO - L - CO2M, wherein (Z)-COO is the residue of an iodinated aromatic acid;, M is H, a cation, ?CH2CH2O?mH, and ?CH2CH(OH)O?pH; m is an integer from 1 to 150;, p is an integer from 1 to 50; and L is one or more divalent linking groups selected from alkylene, cycloalkylene, arylene, arylenealkylene and, alkylenearylene, are particularly useful as wetting agents in x-ray imaging compositions.
Read the whole patent
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
- Filed October 8, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
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.