Method for the intrinsically safe handling of 3-chlorpropyne
CA 2444800 A1 · Owner: Kneuper, Heinz-Josef · Inventors: Weber, Theodor; Rittinger, Stefan; Stamm, Armin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for the intrinsically safe handling of 3chlorpropyne in the presence of a diluent which has a boiling point under , normal pressure in the range of -50 ~C (223 K) to 200 ~C (473 K). According to the method, the concentration of 3-chloropropyne in the liquid phase and in the gaseous phase is maintained below the concentrations at which deflagration occurs, by means of the type and quantity of the diluent the temperature and , the total pressure of the system. The invention also relates to the use of 3chloropropyne produced, stored or transported in this manner for the synthesis of dyes, pharmaceutical and agricultural active ingredients electroplating , …
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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
- Filed April 17, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 17, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2024.
- 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.