Liquid crystal cell
CA 1340786 C · Owner: Hirose, Shigeo · Inventors: Yoshida, Hirohisa; Nakamura, Kunio; Hirose, Shigeo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid crystal cell is disclosed which comprises a pair of opposed substrates defining a space therebetween and each having one or more electrodes disposed thereon, and a liquid crystal material provided in the space, the liquid crystal material being a lyotropic liquid crystal composition containing water and a polymeric electrolyte dissolved in the water in an amount sufficient to form a liquid crystal phase.
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 October 12, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 2016.
- 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.