A method and apparatus for fly rock control in small charge blasting
CA 2365675 A1 · Owner: Georgiou, Peter N. · Inventors: Mudge, Kevin; Tota, Edward W.; Georgiou, Peter N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
The present invention is directed to a method for selecting flyrock control devices from among a menu of flyrock control devices to satisfy the flyrock requirements of a given job or application. The present invention is further directed to flyrock devices that can be used in the hole at or near the , opening of the hole, or at a distance from the hole to perform flyrock and/or pressure wave protection. The invention is particularly useful in suppressing flyrock in urban areas.
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.
Why it's free to use
- Filed February 24, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 24, 2022.
- 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.