Expired Canadian patentCanada
Low isostatic pressure metal pouring process, and machine used in said process
CA 1286475 C · Owner: Merrien, Pierre L. · Inventors: Merrien, Pierre L.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
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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
- Granted July 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 17, 1986
GrantedJuly 23, 1991
Term endedJuly 23, 2008
Patent numberCA 1286475 C
Classification (IPC)B22D18/06 +1 more
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.