Method of making glittering cube-corner retroreflective sheeting
CA 2521906 A1 · Owner: Shusta, Jeanine M. · Inventors: Shusta, Jeanine M.; Benson, Olester Jr.; Marecki, Paul E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed towards a method of making a glittering retroreflective cube-corner sheeting which method comprises: forming a glittering retroreflective cube-corner sheeting from a mold that has a structured surface that includes an array of cube-corner elements that are arranged such that a dihedral angle .alpha. between faces of adjacent cube-corner elements varies to such an extent that a cube-corner sheeting that is formed thereon glitters when exposed to light and a method of making a retroreflective product therefrom.
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 April 4, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2019.
- 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.