Anesthetic lozenges
CA 1105384 A · Owner: Beecham Inc. · Inventors: Brown, Bruce A.; Lane, Philip A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Anesthetic lozenges are preapred by combining an acid addition salt of 3-piperidino-p-alkoxypropiophenones with a molten hard candy base with either the prior or simultaneous addition of a stabilizing amount of a pharmaceutically acceptable acid such as citric acid.
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
- Granted July 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 1998.
- 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.