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Expired Canadian patentCanada

Production of flat products from particulate material

CA 1269575 C · Owner: Bellis, John · Inventors: Bellis, John; Brooks, Nigel John

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Production of Flat Products, from Particulate Material A process for producing flat products from gas atomised particulate material comprises the steps or forming a relatively smooth castable slurry comprising a suspension of such particulate material in a solution of a film-forming binder material depositing, a coating of the slurry onto a substrate of support surface and drying the coating to form a flexible flat product. The dried flat product may be bonded onto the substrate or support surface by the drying process or, alternatively, may be removed therefrom and rollbonded to a suitable substrate for subsequent compaction and sintering.

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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 May 29, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 8, 1987
GrantedMay 29, 1990
Term endedMay 29, 2007
Patent numberCA 1269575 C
Classification (IPC)B05D3/12 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedSep 8, 1987Patent grantedMay 29, 1990Term endedMay 29, 2007

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.