Process for the preparation of iminodiacetonitrile
CA 1297905 C · Owner: Most, James Thomas · Inventors: Richard, Thomas Jose; Most, James Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing iminodiacetonitrile which comprises bringing together under reaction conditions formaldehyde, hydrogen cyanide and a source of ammonia under substantially stoichiometric conditions at a temperature between about 30° and about 65°C at a pH between about 1.5 and about 5.5 preferably between about 3.5 and about 5.3 to, produce the desired iminodiacetonitrile.
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
- Granted March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- 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.