Television visible hockey pucks
CA 2106336 A1 · Owner: Klassen, Donald J. · Inventors: Klassen, Donald J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hockey puck for reflecting light to a television camera to enhance the television viewing of the hockey puck without degrading the hockey players' visibility of the hockey puck with the hockey puck having a colored retroreflective material selected from the group of non-moisture sensitive colored retroreflective materials having a minimum light reflection of about twice the reflectivity of a white diffuse surface.
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 September 16, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 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.