Process for drying coal for melt-down or coal gasifiers
CA 2060077 C · Owner: Hauk, Rolf · Inventors: Hauk, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for drying coal with a natural moisture content, which is supplied to melt-down or coal gasifiers in which drying, takes place by means of the excess energy obtained on coupling to a gas turbine power station. The excess energy is supplied by means of a fluid to at least one drier by heat release from at least one auxiliary unit ensuring or improving energy generation.
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 January 27, 1992 and granted April 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 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.