Non-lead, environmentally safe projectiles and explosives containers
CA 2199396 C · Owner: Lowden, Richard A. · Inventors: Dooley, Joseph B.; Smith, Cyrus M.; Mccoig, Thomas M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solid object having controlled frangibility such as a bullet or a container , for explosives is made by combining two different metals in proportions calculated to achieve a desired density without using lead. A wetting , material is deposited on the base constituent which is made of a relatively dense, hard material. The wetting material enhances the wettability of the base constituent with the binder constituent which is lighter and softer than , the base constituent.
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 June 5, 1996 and granted April 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2018.
- 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.