Particle beam generator
CA 2089659 A1 · Owner: Vroom, David Archie · Inventors: Vroom, David Archie; Schuetz, Marlin Niles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for irradiating a workpiece (11) such as a strand, by, charged particle e.g. electron, bombardment is in accordance with the following steps: generating a charged particle beam (43) at one end of an elongated vaccum chamber (64) by thermionic emission from an elongated emitter (50a 50b); accelerating the ribbon, beam (43) toward a longitudinally extending radially curved, window member (52), such as a tube extending transversely across, another end of the vacuum chamber (64) the window tube (52) having a, length related to the width of the ribbon beams (43 44);, dynamically deflecting the ribbon beam (43) periodically back and forth to define a sweep field which contains the …
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 August 16, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 16, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 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.