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Expired Canadian patentCanada

Process for producing suspensions or solutions of cyanuric chloride in organic solvents

CA 1102328 A · Owner: Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler · Inventors: Schreyer, Gerd; Bittner, Friedrich; Hentschel, Klaus

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Abstract From the Canadian patent

The invention relates to the production of suspensions or solutions of cyanuric chloride in aqueous organic solvents at high speeds of mixing and low production temperatures and thus with a low degree of hydrolysis by injecting liquid cyanuric chloride through a nozzle, which is installed in the upper end of a mixing device, in a countercurrent to the solvent which rises upwards from a nozzle or nozzles and is injected above the breastlike taper in the lower open end of the apparatus. The chamber walls thus are always covered with an uninterrupted liquid layer. The process can be carried out at standard pressure as well as at excess pressure or at negative gauge pressure. At negative gauge …

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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 June 2, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 19, 1979
GrantedJune 2, 1981
Term endedJune 2, 1998
Patent numberCA 1102328 A
Classification (IPC)C07D251/28 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedNov 19, 1979Patent grantedJune 2, 1981Term endedJune 2, 1998

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.