Double layer pavement marking sheet material
CA 1282989 C · Owner: Atom Chemical Paint Co. Ltd. · Inventors: Ishihara, Yuji; Kobayashi, Sadao; Ijichi, Kouichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A double layer pavement marking sheet material comprises a base sheet made of rubber, synthetic resin or the like in which a multiplicity of glass microspheres are embedded. The base sheet comprises an upper layer in which the glass microspheres are embedded in such a manner that a multiplicity thereof are partially exposed from the surface of the base sheet and a lower layer having hardness within a range of 30° - 75° and restoration rate of 50% or less. This double layer pavement marking sheet material has such an excellent conformability to the pavement surface that the sheet material is not separated once it has been adhered to the pavement surface.
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 April 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2008.
- 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.