Process for heating an asphalt surface
CA 2102090 C · Owner: Mclean Ventures Corporation · Inventors: Wiley, Patrick C.; Joharifard, Mostafa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for continuously heating an asphalt surface comprising the steps of: (i) providing asphalt surface heating means an the asphalt surface; (ii) translating the heating means a first distance along the asphalt surface; (iii) reversing the direction of and translating the heating means a second distance along the asphalt surface in a direction substantially opposite to that in Step (ii); (iv) reversing the direction of and translating the heating means a first distance along the asphalt surface in a direction substantially the same as that in Step (ii); (v) repeating Steps (iii) and (iv) in a cyclic manner to provide a heated asphalt surface; wherein the ratio of the second distance …
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 29, 1993 and granted February 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2015.
- 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.