Canadian application, no grantCanada
Liquid crystal display having improved retroreflector
CA 2114215 A1 · Owner: Raychem Corporation · Inventors: Jones, Philip J.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reflective liquid crystal display includes a retroreflector made of an array of full corner cube elements which have their optic axes tilted away from the normal to the plane of the display by an angle of between about 10° and about 45°.
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 5, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 5, 1992
GrantedNo grant recorded
Term endedAugust 5, 2012
Patent numberCA 2114215 A1
Classification (IPC)G02F1/13 +1 more
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.