High performance composite shaped charge
CA 2234811 A1 · Owner: Western Atlas International, Inc. · Inventors: Chawla, Manmohan S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
A shaped charge for efficiently transferring energy from an explosive material to generate a deep penetrating jet. The shaped charge liner is formed with a hemispherical first section combined with an elongated second section. The linersecond section can be formed as a truncated cone trumpet, or other shape. The, hemispherical first section collapses to generate a high velocity jet portion and the, second section collapses to generate an elongated deep penetrating jet portion which, follows the higher velocity jet portion.
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 April 14, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2020.
- 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.