Mass spectrometer
CA 2484125 C · Owner: Brown, Jeffrey Mark · Inventors: Bateman, Robert Harold; Brown, Jeffrey Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mass spectrometer is disclosed comprising a guide wire ion guide (1) having an outer cylindrical electrode (2) and an inner guide wire electrode (3). AC and DC potential differences are maintained between the outer electrode (2) and the inner electrode (3) so that ions are radially confined within the ion guide (1) in an annular potential well. The outer electrode (2) may be segmented and axial potential wells created along the length of the ion guide (1) may be translated along the length of the ion guide (1) by applying additional transient DC potentials to the segments forming the outer electrode (2).
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 September 3, 2003 and granted April 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 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.
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.