Imidazolate sulfuryl difluorides
CA 2260277 C · Owner: Air Products And Chemicals, Inc. · Inventors: Syvret, Robert George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound having the structure:, (see Formula I) wherein R1-3 are the same or different and are selected from the group consisting of hydrogen, halogen C1-8 alkyl, C1-8 haloalkyl, alkoxyalkyl where the alkoxy portion is C1-3 and the alkyl portion is C1-8, haloalkoxyalkyl where the haloalkoxy portion is C1-3 and the alkyl portion is C1-8 haloalkoxyhaloalkyl where the haloalkoxy portion is C1-3 and the haloalkyl portion is C1-8, C4-10 aryl C4-10 haloaryl, alkylaryl where the alkyl portion is C1-8 and the aryl portion is C4-10, alkoxyaryl where the alkoxy portion is C1-3 and the aryl portion is C4-10, alkoxyalkylaryl where the alkoxy and alkyl portions each are C1-3 and the aryl portion is …
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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 January 25, 1999 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2021.
- 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.