Expired Canadian patentCanada
Removal of aluminum alkyl vapor from gas stream
CA 1317600 C · Owner: Malpass, Dennis Benedict · Inventors: Malpass, Dennis Benedict; Fannin, Loyd Wayne; Rohrer, John Robert
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aluminum alkyl vapor is removed from a gas stream by scrubbing with a hydrocarbon scrubbing liquid containing a long chain carboxylic acid dissolved therein. * * * * *
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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 11, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 11, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 1, 1989
GrantedMay 11, 1993
Term endedMay 11, 2010
Patent numberCA 1317600 C
Classification (IPC)C07F5/06 +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.