Patent Yard Sign in
Expired Canadian patentCanada

Characterization of single stranded nucleic acids by melting analysis of secondary structure using double strand-specific nucleic acid dye

CA 2483489 C · Owner: Wittwer, Carl T. · Inventors: Wittwer, Carl T.; Dummer, Charles W.

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

A novel method for characterizing nucleic acids. A nucleic acid is combined with a double stranded nucleic acid-specific dye to form a detectable complex between the dye and one or more double stranded structures within the nucleic acid. The combination is then exposed to varying temperatures and the fluorescence emission of the dye is measured to determine the melting temperature(s) for the double stranded structures. In some embodiments that melting temperature profile is then compared to melting temperature profiles generated for other nucleic acid(s) to discern differences between the compared nucleic acids.

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

  • Filed April 25, 2003 and granted December 8, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2025.
  • 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 25, 2003
GrantedDecember 8, 2015
Term endedApril 25, 2023
Patent numberCA 2483489 C
Classification (IPC)C07H21/02 +1 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedApril 25, 2003Patent grantedDec 8, 2015Term endedApril 25, 2023

Sources & verification

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