Process for the preparation of purified bis(2-hydroxyethyl) ester of 2,6-naphthalenedicarboxylic acid
CA 1297893 C · Owner: Jackson, Winston J. Jr. · Inventors: Wicker, Thomas H. Jr.; Jackson, Winston J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparation of a purified bis(2-hydroxyethyl) ester of 2,6-naphthalenedicarboxylic acid wherein 2,6-naphthalenedicarboxylic acid is reacted with a catalyst comprised of a tertiary amine and a titanium-containing compound in order to produce the ester. LE0445F
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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 March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.