Contrast agents and method of use thereof
CA 1259565 A · Owner: Rubin, Daniel L. · Inventors: Rubin, Daniel L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Contrast agents comprising aqueous emulsions or mixtures of iodinated aliphatic carboxylic acids having 6-17 carbon atoms in the aliphatic chain including the carboxyl group are useful in radiological examination of the gastro-intestinal tract after administration. The iodinated carboxylic acids may have the formula (I)nX - R - COR' wherein X is an aromatic group, n is an integer of 1 to 3 per aromatic nucleus R is an, aliphatic group of 5 to 16 carbon atoms exclusive of branching and R' is a hydroxy group, a halogen atom or an alkoxy amino or, acyloxy group. The contrast agents improve the visualization of the gastro-intestinal tract causing the organ to stand out against the background of …
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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 19, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 19, 2006.
- 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.