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Expired Canadian patentCanada

Method for screening an expression cdna clone bank for the detection of polynucleotides

CA 1339411 C · Owner: Rumpold, Helmut · Inventors: Breitenbach, Michael; Kraft, Dietrich; Pettenburger, Karin

CIPO record

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Abstract From the Canadian patent

The invention relates to a method by which expression cDNA clone banks are screened by means of IgE antibodies derived from the sera of allergic individuals or by means of, monoclonal or polyclonal antibodies. This type of screening is used for the detection of polynucleotides whose open-reading frames code for allergenically active proteins. These proteins are characterized in that their biological activity as allergens is equal to that of plant allergens occurring in nature.

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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 September 2, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 26, 1989
GrantedSeptember 2, 1997
Term endedSeptember 2, 2014
Patent numberCA 1339411 C
Classification (IPC)C12N15/29 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedJune 26, 1989Patent grantedSep 2, 1997Term endedSep 2, 2014

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