Casting tooling
CA 2178619 A1 · Owner: Cornie, James A. · Inventors: Cornie, James A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides methods for producing semi-permanent casting tooling as well as semi-permanent casting tooling apparatus. Casting tooling includes a blend of high char resin and refractory powder casting tooling prepared from a blend of sol-gel ceramic precursor and refractory powder, and a preform including a leachable core as well as methods for their production are provided. The casting tooling of the invention can be used in casting processes including die casting permanent mold casting and pressure infiltration casting. Also provided is an investment mold casting technique compatible with a pressure infiltration process.
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 November 1, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 2016.
- 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.