Expired Canadian patentCanada
Solid phase synthesis supports and methods
CA 2441922 C · Owner: Krepski, Larry R. · Inventors: Rasmussen, Jerald K.; Krepski, Larry R.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Functionalized supports and methods for solid phase synthesis. Preferably the , functionalized support is azlactone-functionalized.
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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 February 28, 2002 and granted April 19, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 28, 2002
GrantedApril 19, 2011
Term endedFebruary 28, 2022
Patent numberCA 2441922 C
Classification (IPC)C07B61/00 +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.