Instrument and method for the laser desorption of ions in mass spectrometry
CA 2042386 C · Owner: Beavis, Ronald Charles · Inventors: Chait, Brian Trevor; Beavis, Ronald Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In mass spectrometry, a time of flight (TOF) mass spectrometer is used to measure the mass spectrum of organic molecules of mass ranging from 200 Dalton to greater than 200,000 Dalton. Ions from the sample are desorbed by striking the probe tip with laser pulses in a spot size, on the tip in the range of 0.03 - 3.0 mm-. The time of flight of the ions is measured and displayed with a resolution of the ion molecular signal in the range of 300-500 full width at half-maximum definition (FWHM).
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 26, 1990 and granted December 2, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 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.