Expired Canadian patentCanada
Apparatus for producing heat treatment atmospheres
CA 2259775 C · Owner: Praxair Technology, Inc. · Inventors: Van Den Sype, Jaak Stefaan; Barlow, Alan Russell
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
35-, An endogenerator is provided in which CO and H2 are generated as primary products of hydrocarbon oxidation. The reactor is a compact reactor and operates autothermally without auxiliary heating means.
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 January 21, 1999 and granted October 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 21, 1999
GrantedOctober 29, 2002
Term endedJanuary 21, 2019
Patent numberCA 2259775 C
Classification (IPC)C01B3/40 +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.