Chipable mineral composition for an excavation toy including a buried object
CA 2193796 C · Owner: Earth Lore Ltd. · Inventors: Andries, Derrick; Bertone, Liberato; Korniat, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition with the required chipping characteristics can be formed into a solid block surrounding objects to be exposed by chipping away the material of the block to define a paleontology or similar toy. The composition contains rounded granite particles of two different mesh sizes a, wax filler material in the interstices between the particles and a separate binder to form the structure into a solid block.
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 December 23, 1996 and granted October 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 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.