Lactic acid derivative
CA 2480002 A1 · Owner: Amato Pharmaceutical Products, Ltd. · Inventors: Watanabe, Mikio; Murakami, Masahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lactic acid derivative having an aminoethyl group at an end; and a process for producing the derivative. The derivative is a compound represented by the formula (1) or a salt thereof: (1) wherein R represents hydrogen or an aminoprotecting group; X represents hydrogen or a hydroxy-protecting group; Y represents -O- or -S-; and Z represents an aliphatic group aryl, heterocyclic , group, -CO-, or a combination thereof provided that these groups may have a substituent.
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 February 18, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 2025.
- 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.