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Expired Canadian patentCanada

Process for renaturing proteins

CA 1304191 C · Owner: Rudolph, Rainer · Inventors: Rudolph, Rainer; Fischer, Stephan

CIPO record

Overview

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

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Abstract From the Canadian patent

Process for renaturing proteins The present invention provides a process for the renaturation of denatured proteins in solution in a renaturation buffer, wherein a solution is prepared of the protein to be renatured in the critical concentration in a selected buffer and, after formation of the folding intermediate, further protein to be renatured is added in the amount necessary for the achievement of the critical concentration.

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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 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 2, 1987
GrantedJune 23, 1992
Term endedJune 23, 2009
Patent numberCA 1304191 C
Classification (IPC)C12N9/04 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedApril 2, 1987Patent grantedJune 23, 1992Term endedJune 23, 2009

Sources & verification

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