Trialkylsilyl esters of amino acids and their uses in the synthesis of peptides
CA 2003308 A1 · Owner: Calder, Michael R. · Inventors: Calder, Michael R.; Atkinson, Anthony; Sharma, Ram P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel procedure is described for synthesising peptides in which successive amino acids are attached to an incipient polypeptide chain by addition of a carboxy-protected amino acid to the carboxy end of said chain. The procedure involves the use of silyl esters of amino acids many of which are novel and form a further aspect of the invention.
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
- Filed November 17, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 17, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 2011.
- 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.