Processes for the preparation and separation of macromolecules
CA 2012379 C · Owner: Slater, Gary W. · Inventors: Turmel, Chantal; Noolandi, Jaan; Slater, Gary W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the electrophoretic separation of charged macromolecules which comprises applying to said macromolecules a periodic sequence of pulses with each period comprising a multiplicity of electric field pulses of negative and positive polarities wherein the negative polarity pulses are applied for a longer total time duration than the positive polarity pulses within each period and the average intensity, of the negative polarity pulses is less than the average intensity of the positive polarity pulses.
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 March 16, 1990 and granted January 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 16, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.