Rotary dryer and associated drying plant
CA 2001810 C · Owner: Atlas Industries A/S · Inventors: Christensen, Jorgen S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary dryer (1) for the drying of, for example biological sludge, camprises a rotatable drum having rake elements (6) with openings for the passage of sludge disposed on the inner side of the drum casing. A drying plant with such a dryer further comprises a hot-gas plant (3) and one or more co-rotating drying zones (4,5).
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 October 30, 1989 and granted March 6, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 30, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2011.
- 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.