Material treatment
CA 2019871 C · Owner: Wolverine Corporation · Inventors: Milone, Philip G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multimode thermal treatment system includes a series of particle treatment zones. Perforate conveyer structure for supporting the particulate product to be thermally treated is disposed for movement through the series of treatment zones. Each treatment zone includes first (upper) distribution plenum structure disposed above the treatment zone and an array of nozzle tubes extending downwardly from the upper distribution plenum into the treatment zone to flow conditioned gas with substantial velocity into the treatment zone for thermal treatment of particulate material being transported by the conveyer structure through the treatment zone; and a second (lower) distribution plenum disposed …
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 26, 1990 and granted June 4, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 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.
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.