Method and device for steering light
CA 2084945 C · Owner: Nelson, William E. · Inventors: Nelson, William E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for periodically steering a beam of light is disclosed comprising the steps of reflecting a beam of light off of a mirror (16) suspended by at least two supporting elements (20). At least one of the supporting elements (20) is displaced from an edge of the mirror. A periodic voltage is applied to an electrode displaced from the mirror to cause the mirror to rotate about an axis.
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 December 9, 1992 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 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.