Expired Canadian patentCanada
Ice and ice-like compositions and methods of making same
CA 2189581 C · Owner: Ghayur, Tariq · Inventors: Walker, Nigel Pelham Clinton; Ghayur, Tariq; Talanian, Robert V.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to interleukin-1 beta-converting enzyme ICE and ICE-like compositions formed by combining two subunits of ICE and folding such subunits to form an active enzyme.
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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
- Filed May 12, 1995 and granted December 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 12, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 12, 1995
GrantedDecember 7, 1999
Term endedMay 12, 2015
Patent numberCA 2189581 C
Classification (IPC)C12N9/64 +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.