Valve set for pressurized fluid packaging and packaging equipped thereof

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 May 25, 1990 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2010.
• A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2012.
• We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.