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Expired Canadian patentCanada

Laminar roller rink surface and method of producing same

CA 1058238 A · Owner: R. C. Sports · Inventors: Noll, Barton B.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A laminar, synthetic resin floor construction especially adapted for roller rinks is provided which resists significant cracking, peeling or delamination characteristic of prior floors of this type, and has a useful life far in excess of such conventional laminated floors. The floor includes a relatively thin epoxy primer layer applied over and partially absorbed into a porous substrate such as acid etched concrete a relatively thick epoxy resiliency layer applied over and bonded to the primary layer, and a multiple-coat finishing layer applied over the resiliency layer which presents a proper roller skating surface. In preferred forms the primer and resiliency layers are formed from …

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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

  • Granted July 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 10, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJuly 10, 1979
Term endedJuly 10, 1996
Patent numberCA 1058238 A
Classification (IPC)B32B3/28 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJuly 10, 1979Term endedJuly 10, 1996

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.