Prefabricated retroreflective sign
CA 2332810 A1 · Owner: Northey, Paul J. · Inventors: Northey, Paul J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retroreflective sign (40) includes a rigid sign board (48) and a retroreflective sheeting (42) having a structured surface. The structured surface has cube corner elements (44a) formed therein and is bonded to a , surface (48a) of the sign board to define a plurality of cells. The cells protect the cube corner elements from moisture and dirt which could adversely , impact the retroreflective performance of the film. By sealing the structured surface directly to the sign board, rather than to an intermediate seal film and then to the sign board, a simpler prefabricated sign construction is achieved. In some embodiments, interconnected raised sections (44b) are used to define the …
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 January 6, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 6, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 6, 2021.
- 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.