Turfing systems for stadia
CA 2203192 C · Owner: Greentech, Inc. · Inventors: Cataldo, Stephen A.; Ripley, Thomas L. Sr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved turf units for assembling a natural turf playing surface in a stadium or the like. Natural turf units are provided which are transportable between a first and second locations, the second location being for the growth and the first area being the location of the desired activity. Each turf unit including a fence (30) hingeably connected to growing pan or tray (28). The outer periphery of the fence (30) extends beyond the outer periphery of the growing pans (28) such that, when the turf units are assembled to create a playing surface, large areas (36) exist beneath the growing 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 October 23, 1995 and granted October 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 23, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2017.
- 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.