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Expired Canadian patentCanada

Hydrid promoters let and lec

CA 1268721 C · Owner: Nishi, Tatsunari · Inventors: Nishi, Tatsunari; Saito, Akiko; Itoh, Seiga

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

Disclosed is a novel promoter wherein a 5' flanking region of a promoter (referred to as promoter A hereinafter) is replaced with a 5' flanking region of another promoter (referred to as promoter B hereinafter) or a chemically synthesized DNA fragment. The promoter is constructed by replacing a region existing upstream from the "-35" region of promoter A with a region upstream from the "-35" region of promoter B or a chemically synthesized DNA fragment.

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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 May 8, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 18, 1984
GrantedMay 8, 1990
Term endedMay 8, 2007
Patent numberCA 1268721 C
Classification (IPC)C12N15/00 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedDec 18, 1984Patent grantedMay 8, 1990Term endedMay 8, 2007

Sources & verification

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