Method of providing a surface dressing for a roadway
CA 1048835 A · Owner: Societe Anonyme Dite: Huiles Goudrons Et Derives · Inventors: Rofidal, Serge
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of providing a surface dressing for a roadway and includes contacting an aggregate (granular material) and a binder in situ on the roadway and heating the layer thus formed to a temperature measured at about 1mm. below the surface of the layer of between 100°C and 200°C. The method can be applied either to a new surface dressing or to a repair operation and in the latter instance where the surface has become polished as a result of loss of aggregate from the surface, the aggregate is merely distributed over the polished surface, and the heat applied to the required temperature.
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
- Granted February 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 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.
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.