Expired Canadian patentCanada
Method for quenching cracked gases
CA 1075720 A · Owner: Pullman Incorporated · Inventors: Styslinger, James R.; Ennis, Bernard P. (Jr.)
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 method for quenching cracked gases and recovery of heat therefrom by cooling the gases in heat exchange with steam to increase superheat level of the steam and subsequently recovering heat from the superheated steam.
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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 April 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 15, 1980
Term endedApril 15, 1997
Patent numberCA 1075720 A
Classification (IPC)C07C2/00 +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.