Synthesis of labeled compound
CA 2085590 A1 · Owner: Nkk Corporation · Inventors: Yamazaki, Shigeki; Nakagawa, Hideyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the synthesis of 13N-ammonia in target which comprises charging target water and hydrogen into a synthesis apparatus to make a pressurized condition at 0.1-5 kg/cm2 and irradiating proton beam to the target water which is circulated to produce 13N-ammonia, a process for the synthesis of 13N-ammonia in target which comprises bringing the target water containing 13N-ammonia thus produced into contact with a Na type cation-exchange resin to collect 13N-ammonia by the cation-exchange, and then bringing the cation-exchange resin into contact with a saline solution to elute the collected 13N-ammonia into the saline solution and a process for the synthesis of a labeled compound at, …
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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
- Filed January 7, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2014.
- 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
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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.