Repaired scratched and/or abraded transparent substrates having protective removable sheets thereon and a method of making
CA 2346789 A1 · Owner: Sheffield, William F. · Inventors: O'Keefe, Donald R.; Sheffield, William F.; Everaerts, Albert I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a method of repairing one or both sides of an optically damaged substrate such as rigid glass or plastic window signage or , displays. The invention also relates to the repaired substrates. This invention also relates to an article comprising a transparent stack of sheets that may be applied, for example, to protect said repaired substrates such as glass or plastic windows, signage or displays. A topmost sheet can be peeled away after it is damaged to reveal an undamaged sheet below. The invention also relates to the protected substrates and a method of protecting substrates such as glass or plastic windows, signage and displays from vandalism or other …
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 October 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 14, 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.