Electrophoresis method and apparatus
CA 2056708 A1 · Owner: Cheh, Huk Y. · Inventors: Shmidt, Joseph L.; Cheh, Huk Y.; Shmidt, Joseph L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method and apparatus for effecting an electrophoretic separation of charged particles. A fractionation chamber comprising a semipermeable membrane is used wherein a transmembrane force holds the particles to be separated against the membrane surface while a voltage gradient is applied to separate the particle.
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 November 29, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2013.
- 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.