Expired Canadian patentCanada
Method and apparatus for producing and removing alkanolamine from a mixture containing oxazolidone
CA 1092159 A · Owner: Mobil Oil Corporation · Inventors: Kettner, Roland; Unland, Herbert
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure This specification discloses a method and apparatus for producing and recovering alkanolamine from a mixture containing oxazolidone by hydrolyzing the mixture containing oxazolidone. -1-
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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 December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 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.
FiledOctober 4, 1977
GrantedDecember 23, 1980
Term endedDecember 23, 1997
Patent numberCA 1092159 A
Classification (IPC)B01D53/14
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.