Artificial stone and formation therefor
CA 2358376 A1 · Owner: Availvs Corporation · Inventors: Sakai, Mieko; Saito, Kenichiro; Yamanashi, Sumiyo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To provide a further improvement of luminescence performance such as an extension of a continuation time of a light accumulation luminescence or aluminescence by ultraviolet rays, by a control of the structure of the artificial stone. A noctilucent/luminescent artificial stone including a transparent aggregate, at least one kind of a light accumulation material and a luminescent material by ultraviolet rays along with a resin is characterized by that the luminescence performance of the artificial stone is higher than that of the included light accumulation material or luminescent material by ultraviolet rays per se.
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 5, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 5, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2023.
- 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.