Anti-reflection optical article and process of producing the same
CA 1324539 C · Owner: Seki, Tetsuya · Inventors: Taniguchi, Takashi; Seki, Tetsuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an anti-reflection optical article which has an excellent anti-reflection property scratch, resistance, impact resistance flexibility, anti-static, property and weatherability and which is easy to dye. The anti-reflection optical article of the present invention comprises a transparent plastic substrate; a hard coat film formed on a surface of the substrate the, film having an index of refraction of not less than 1.52; and a fluorine-containing organopolysiloxane-based film with a thickness of 10 nm to 500 nm, which has an index of refraction lower than that of the hard coat film by not less than 0.02, and which is formed on the hard coat film.
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
- Granted November 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 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.