Expired Canadian patentCanada
Large-pored molecular sieves containing at least one octahedral site and tetrahedral sites of at least one type
CA 2084086 C · Owner: Kuznicki, Steven M. · Inventors: Kuznicki, Steven M.; Thrush, Kathleen A.
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 crystalline molecular sieve is disclosed having both at least one octahedrally coordinate metal and at least one tetrahedrally coordinated metal in its framework.
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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 April 30, 1991 and granted October 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 30, 1991
GrantedOctober 8, 2002
Term endedApril 30, 2011
Patent numberCA 2084086 C
Classification (IPC)C02F1/42 +2 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.