Neutral grey absorbing film
CA 2296506 A1 · Owner: Strickler, David A. · Inventors: Soubeyrand, Michel J.; Mccurdy, Richard J.; Strickler, David A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A color neutral absorbing film applied as a coating on a glass substrate. The film is an antimony/tin oxide alloy coating containing at least about five atomic percent antimony. The coating is suitable for use in antireflective coatings containing other metal oxides or mixed metal oxides to achieve a coated glass article having a visible light transmittance of 30 % or greater and a reflectance of less than 5 %.
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 June 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2020.
- 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.