Photoluminescence road marking material and road structure
CA 2445808 A1 · Owner: Sakai, Mieko · Inventors: Saito, Kenichiro; Sakai, Mieko; Yamanashi, Sumiyo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel light-accumulating luminous road marking material wherein a resin paste containing a light-accumulating luminous pigment component together with a transparent resin component is provided on the surface of a road to form a light-accumulating luminous layer, characterized in that the resin paste contains the transparent resin component in an amount of 7 to 95 wt % relative to the total resin paste. The road marking material has excellent lightaccumulating luminous performance capabilities as well as satisfactory resistance to abrasion and wear, allows the suppression of green color tone which leads to the use thereof as a white line and various color lines and , further combines …
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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 December 27, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 27, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 2024.
- 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.