Expired Canadian patentCanada
Process for the separation of 2-methylalkanals from isomers thereof
CA 1313680 C · Owner: Lappe, Peter · Inventors: Springer, Helmut; Weber, Jurgen; Lappe, Peter
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of Disclosure, A process for the separation of 2-methylalkanals from mixtures with isomers thereof comprising distillation of the mixture in the presence of formaldehyde and an aldolization catalyst.
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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 February 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 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 21, 1989
GrantedFebruary 16, 1993
Term endedFebruary 16, 2010
Patent numberCA 1313680 C
Classification (IPC)C07C47/02 +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.