Process for the preparation of phosphorothioic dichlorides
CA 1302428 C · Owner: Sanborn, James Russell · Inventors: Sanborn, James Russell; Fahmy, Mohamed Abdel Hamid
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a process for the preparation of phosphorothioic dichlorides characterised by reacting a compound of the formula RCHO, wherein R is an alkyl or haloalkyl moiety with, PC13 and sulfur monochloride in the presence of a catalytic amount of chloride ion in the liquid phase and under anhydrous conditions to produce a compound of formula RCHC1OP(S)C12. PSO5O19
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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, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 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.