Method for producing light control sheet
CA 2252186 A1 · Owner: Yasunori, Yukio · Inventors: Yasunori, Yukio; Takemura, Shinichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method for producing a light control sheet having a function of scattering an incident light of a particular angle range comprising the steps of: (1)forming a layer comprising photopolymerizable composition on a sheet, (2)curing the layer by irradiation with light from a particular direction (3)laminating a, transparent film on the cured layer to achieve adhesion thereof, (4)irradiating the cured layer with light through the transparent film. According to the method of the present invention a, light control sheet which provides no sticky feeling and, has a sufficient commercial value can be producing by means, of a relatively simple apparatus with stability.
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 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 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.