Process for the preparation of c1-c4-alkyl nitrites
CA 2117015 A1 · Owner: Landscheidt, Heinz · Inventors: Klausener, Alexander; Wagner, Paul; Landscheidt, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the preparation of C1-C4-alkyl nitrites A b s t r a c t, C1-C4-Alkyl nitrites can be prepared by reaction of C1-C4alkanols with nitrogen oxides with the participation of oxygen in a reactor designed as a scrubber column nitrogen oxides having a proportion of more than 50% of NO of the total amount of gram atoms of N of the nitrogen oxides, oxygen and optionally inert gas being fed into the lower part of the reactor. 5 to 60% of the total amount of C1-C4-alkanol used is likewise fed into the lower part of the reactor in vaporous or atomized form while the remaining C1-C4-alkanol is delivered to the column head.
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 March 4, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 2016.
- 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.