Process for preparing carboxylic acids
CA 2109473 A1 · Owner: Smith, Warren John · Inventors: Smith, Warren John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Preparation of an aliphatic carboxylic acid having (n + 1) carbon atoms, where n is an integer up to 6, may be achieved by contacting an aliphatic alcohol having n carbon atoms or a reactive derivative thereof with carbon monoxide, in the presence of a copper nickel, iridium, rhodium or cobalt loaded mordenite zeolite catalyst at, elevated temperature and at a pressure in the range 15 to 200 bars.
Read the whole patent
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
- Filed October 28, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2015.
- 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.