Expired Canadian patentCanada
Selective production of 2,6-diethylnaphthalene
CA 1320969 C · Owner: Nemo, Thomas Edward · Inventors: Nemo, Thomas Edward; Hagen, Gary Peter
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
SELECTIVE PRODUCTION OF 2,6-DIETHYLNAPHTHALENE ABSTRACT, A method for the highly selective production of 2,6-diethylnaphthalene involving the use of a specific Lewis acid catalyst and a highly regiospecific ethylating agent.
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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 August 3, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 3, 2010.
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FiledJune 13, 1989
GrantedAugust 3, 1993
Term endedAugust 3, 2010
Patent numberCA 1320969 C
Classification (IPC)C07C6/12 +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.