Air lance reel for catalyst unloading of tubular reactors
CA 2111840 C · Owner: Catalyst Technology, Inc. · Inventors: Johnson, Kelly James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air lance comprises a plastic tube (14) supplied with air at high pressure and having an air outlet (16). The lance is inserted into catalyst tubes (26) and supplies air for breaking up the catalyst (28) for removal by vacuum means. An airpowered reel (12) is used to dispense and retrieve the plastic lance when emptying the catalyst tubes.
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 June 17, 1992 and granted November 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2014.
- 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.