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Expired Canadian patentCanada

Reaction vessel

CA 1159622 A · Owner: F. D. International, Ltd. · Inventors: Von Platen, Baltzar

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

The present invention relates to a reaction vessel adapted to withstand pressures and temperatures of the magnitude associated with the manufacture of diamond products and boron nitride (BN) and similar hard materials. The reaction vessel has an outer chamber or shell formed from steel and an inner reaction chamber. Known vessels of this type must be provided with a thick layer of insulating material between the reaction chamber and the outer steel shell to protect the outer shell from the heat of the diamond-forming process carried on in the reaction chamber. The quantity of insulating material required within the vessel for adequate protection of the outer shell is relatively large as …

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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 January 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 17, 1980
GrantedJanuary 3, 1984
Term endedJanuary 3, 2001
Patent numberCA 1159622 A
Classification (IPC)B01J3/06 +1 more

Timeline

Timeline From CIPO dates

1981198419871990199319961999Application filedDec 17, 1980Patent grantedJan 3, 1984Term endedJan 3, 2001

Sources & verification

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