Method of reprocessing picture tubes
CA 2104934 C · Owner: Wolf, Jurgen · Inventors: Wolf, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is described a method of reprocessing picture tubes by heating the picture tube to at least the fusing temperature of the solder at the joint and separating the screen and the cone under the influence of gravity the method, residing in effecting a clean separation of the screen and the cone by slowly heating the aerated picture tube which is arranged during heating, in such a, way that the joint between the screen and the cone is inclined with respect to the horizontal, and displacing the screen and the cone in opposite directions.
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 26, 1993 and granted April 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2015.
- 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.