Protective refractory shield for a gasifier
CA 2339468 C · Owner: Texaco Development Corporation · Inventors: Brooker, Donald D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The protective refractory shield (10) for a gasifier includes a refractory attachment (70, 140) that is mechanically secured to a protectable surface (60) of the gasifier. The refractory attachment (70 140) includes a plurality , of attachment members (70 140) of predetermined angular sector. The refractory attachment (70, 140) is provided to cover a downwardly facing horizontal surface (60) of the gasifier or to be positioned upon a vertical surface thereof. Latching means for the attachment include a projecting formation that projects from the protectable surface (60) that engages a complementary shaped recess in the attachment (70 140) to mechanically secure , the attachment to …
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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 July 28, 1999 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2021.
- 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.