Anticoagulant peptides
CA 2086243 C · Owner: Merrell Dow Pharmaceuticals Inc. · Inventors: Krstenansky, John L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to peptide analogs of the formula, X-A1-A2-A3-A4-A5-A6-A7-A8-A9-A10-A11-A12-Y wherein, X is an amino terminal residue selected from hydrogen, one or two alkyl groups of from 1 to 6 carbon atoms, one or two acyl groups of from 2 to 10 carbon atoms, carbobenzyloxy, H2NC(=NH)-, or a tbutyloxy carbonyl group;, A1 is a band or is a peptide fragment containing from 1 to 11 residues of any ammo acid;, A2 is a bond or is a group of the formula (see formula I), wherein Y2 = O, NR2', S bond, Z2 = -SO3H, (see formula II), -COOR2" n is an integer of from 1 to 5, and wherein R2' and R2" are each independently an H or a (C1-C4)alkyl group;, A3 is Phe, SubPhe .beta.-(2- and …
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 June 28, 1991 and granted October 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2013.
- 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.