Patent Yard Sign in
Expired Canadian patentCanada

Human protein disulfide isomerase polypeptide and dna encoding the same

CA 1341390 C · Owner: Yamauchi, Kiyoshi · Inventors: Toyoshima, Kumao; Yamamoto, Tadashi; Yamauchi, Kiyoshi

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

The invention relates to protein disulfide isomerase, which catalyzes the exchange reaction between sulfhydryl and disulfide in a protein for formation of the most stable natural type disulfide bonds useful for, formation of natural type disulfide bonds in a protein which is produced in a prokaryotic cell, the protein having natural type disulfide bonds may be for example a cytokine such as interleukin-2.

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

  • Granted October 1, 2002. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2019.
  • 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
GrantedOctober 1, 2002
Term endedOctober 1, 2019
Patent numberCA 1341390 C
Classification (IPC)C12N15/61 +2 more

Timeline

Timeline From CIPO dates

19891993199720012005200920132017Application filedMay 31, 1988Patent grantedOct 1, 2002Term endedOct 1, 2019

Sources & verification

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