Expired Canadian patentCanada
Apparatus for producing cement building material
CA 1298282 C · Owner: Concrete Technology Corporation · Inventors: Hodson, Simon
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cement paste generator produces a paste with improved workability. The cement paste generator includes a housing, a shaft and a series of blades and baffles which have critical dimensions.
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
- Granted March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 7, 1988
GrantedMarch 31, 1992
Term endedMarch 31, 2009
Patent numberCA 1298282 C
Classification (IPC)B28C5/16 +2 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.