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Expired Canadian patentCanada

Peptide boronic acid inhibitors of trypsin-like proteases

CA 1339897 C · Owner: Kettner, Charles Adrian · Inventors: Shenvi, Ashokkumar Bhikkappa; Kettner, Charles Adrian

CIPO record

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Abstract From the Canadian patent

Peptides comprising C-terminal boronic acid derivatives of lysine, ornithine, and arginine homoarginine and corresponding isothiouronium analogs thereof, are reversible inhibitors of trypsin-like serine proteases such as thrombin, plasma kallikrein and plasmin.

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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 June 2, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 31, 1988
GrantedJune 2, 1998
Term endedJune 2, 2015
Patent numberCA 1339897 C
Classification (IPC)C07F5/02 +2 more

Timeline

Timeline From CIPO dates

198919921995199820012004200720102013Application filedMay 31, 1988Patent grantedJune 2, 1998Term endedJune 2, 2015

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.