Metal plate/asphalt pavement
CA 2038790 C · Owner: Foley, Dennis Paul · Inventors: Zanzotto, Ludovit; Sieben, Dale; Frizzell, Reginald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A combination of a metal plate and a four layer paving system includes:, (a) a metal plate;, (b) a first primer layer consisting of an elastomer, modified asphalt; (c) an aggregate layer;, (d) a second primer layer consisting of an elastomer, modified asphalt; and (e) a layer of asphalt pavement. The combination is resistant to delamination between the metal plate and the paving system. It may be utilized in applications which are subjected to the load of automotive traffic, such as bridge decking or the flooring of a parking garage. -1-
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 March 21, 1991 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 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.