Expired Canadian patentCanada
Extraction of flavour and colour from shellfish waste
CA 1049837 A · Owner: Idziak, Edmund S. · Inventors: Henneberry, Gerald O.; Idziak, Edmund S.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A food flavouring extract material is obtained by an enzymatic digestion of the usually unedible portions of certain shellfish.
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 March 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 4, 1974
GrantedMarch 6, 1979
Term endedMarch 6, 1996
Patent numberCA 1049837 A
Classification (IPC)A23L27/24 +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.