Process for the preparation of melamine
CA 2494839 A1 · Owner: Grimbergen, Reinier Franciscus Petrus · Inventors: Grolman, Eric; Tjioe, Tjay Tjien; Grimbergen, Reinier Franciscus Petrus
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 melamine comprising a first mixing step in , which at least two melamine-containing flows origination from at least two , different processes for the preparation of melamine are brought into contact , with each other with a mixture being formed. In a preferred embodiment at least one melamine-containing flow contains melamine from a low-pressure gasphase process for the preparation of melamine and at least one melaminecontaining flow contains melamine from a high-pressure liquid-phase process for the preparation of melamine.
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 July 29, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2025.
- 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.