Inspection of edges
CA 2221098 C · Owner: Kirby, George J. · Inventors: Kirby, George J.; Borgeson, Arthur B.; Ewing, Jon F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuous edge of a strip of material (14) is processed as it moves in a direction along the length of the strip. The condition of the continuous edge of the moving strip is inspected after it has been processed. The strip is cut into pieces. And the pieces are sorted into groups in response to the condition of the edge. The edge is continuously monitored by a pair of parallel, closely spaced laser beams. A visualization system (25) includes a camera, a monitor, and a storage system. The camera images an edge of the moving strip of material. The monitor, coupled to the camera displays images , captured by the camera. The storage system coupled to the camera and the , monitor …
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 24, 1996 and granted July 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2018.
- 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.