Abrasion wear resistant coated substrate product
CA 2172829 A1 · Owner: Diamonex Incorporated · Inventors: Knapp, Bradley J.; Kimock, Fred M.; Finke, Steven James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The coated substrate product finds, particular application in eyeglass and sunglass lenses, architectural glass, analytical instrument windows, automotive windshields and laser bar code scanners for use in retail stores and supermarkets. The product has greatly improved wear resistance for severe abrasive environments and comprises a substantially optically transparent substrate (1), one or more chemically vapor deposited interlayers (2) bonded to the substrate and a chemically vapor deposited outer layer (3) of optically transparent or substantially optically transparent hard and low friction material bonded to the interlayer and away from the substrate.
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 August 24, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 24, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2016.
- 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.