Synthetic turf, method of making thereof, border strip for small size golf and understructure for artificial large size golf
CA 2043170 A1 · Owner: Lemieux, Alain · Inventors: Lemieux, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The synthetic turf has a base made of fabric material from which upwardly projects a mass of entangled crimped grass-, like frayed blades made of polypropylene nylon or, polyester. The blades have a length between 3/8" and 2" a, weight from 28 to 60 ounces per square foot and a denier value of about 5400. The method of treating this synthetic turf consists in sandblasting the blades from above the turf at a distance of about 3 to 4 feet with a jet of sand having a pressure of about 80 to 120 pounds per square inch and directed at an angle of about 70° to 80° from the horizontal and in a circular motion. The border strip for an artificial golf practice course comprises a body made of …
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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, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2013.
- 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.