Continuous microwave power soils defroster
CA 2054401 A1 · Owner: Getkate, Hendrik · Inventors: Getkate, Hendrik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is a device created to provide a means to heat and defrost frozenground by projecting especially downward into the ground continuous wave, microwave energy for such length of time in such frequencies and in such, power ranges as may be necessary or most efficient to defrost the ground various soils,ice and other materials so as to enable the removal of the previously frozen ground, various soils and ice in a relatively unfrozen state by means of conventional hand tools for the removal of unfrozen soils or by the use of conventional mechanized equipment for the removal of soils. This invention is hereinafter referred to as the "Continuous Microwave Soils Defroster" and will be …
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 28, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2013.
- 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.