High accuracy beam blanker
CA 2069767 C · Owner: Gesley, Mark · Inventors: Gesley, Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The accuracy of a double-deflection beam blanker is dramatically improved for all blanker voltages by using provided, closed-form, trajectory equations to determine the blanker geometric parameters and compensating for fringe-field affects in order to precisely determine the delay line length for control of an electron or ion beam. This delay line length is maintained by placing alignment apertures above and below the blanker.
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 May 28, 1992 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2014.
- 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.