High efficiency cube-corner retroreflective material
CA 1319551 C · Owner: Hoopman, Timothy Lee · Inventors: Hoopman, Timothy Lee; Nelson, John Carl; Gardiner, Mark Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is described retroreflective material comprising a transparent surface layer having a front side and a back side and an array of cube-corner reflective elements each of the, reflecting elements including: a rectangular base on the back side of the surface layer; two rectangular faces approximately perpendicular to each other, each one being joined to an edge of the rectangular base to form a reflecting element having a triangular cross section; and two triangular faces that are approximately parallel to each other and approximately perpendicular to the rectangular faces, and forming the ends of the reflecting elements. The triangular and the rectangular faces define a pair of …
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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
- Granted June 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 2010.
- 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.