Dipeptide derivatives and their production
CA 1181065 A · Owner: Shionogi & Co. Ltd. · Inventors: Sasakura, Kazuyuki; Ishiba, Teruyuki; Sugimoto, Hirohiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dipeptide derivatives represented by the formula: wherein R represents hydrogen, C1-C6alkyl group C2-C7alkenyl, group, C2-C7 cyanoalkyl group C2-C7carbamoylalkyl group, C3-C10dialkylaminoalkyl group or cyclopropylmethyl group R1, represents hydrogen, C1-C6 alkyl group C7-C14 aralkyl group, C7-C14hydroxyaralkyl group C6-C12aryl group, C2-C7carbamoyl-, alkyl group C2-C7carboxyalkyl group, C1-C6aminoalkyl group C4-C10guanidylalkyl group, C1-C6mercaptoalkyl group C2-C7alkyl-, thioalkyl group, C9-C15indolylalkyl group or C4-C9imidazolylalkyl group, R2 represents hydrogen, C1-C6alkyl group C7-C14aralkyl, group, C6-C12aryl group glycyl group or glycyl-glycyl group, R3 represents hydrogen …
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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
- Granted January 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 2002.
- 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.