Process and apparatus for producing liquid crystal panel
CA 2042949 C · Owner: Yoshihara, Satoshi · Inventors: Yoshihara, Satoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid crystal contained in a liquid crystal reservoir is applied to an injection port of a blank liquid crystal panel in a vacuum chamber and the, vacuum chamber is restored to the atmospheric pressure to inject the applied liquid crystal into the liquid crystal panel through the injection port. Herein the, liquid crystal, particularly a ferroelectric liquid crystal having a high viscosity, is effectively used for filling the liquid crystal panel with a minimum loss by using a transfer member moving between the liquid crystal reservoir and the liquid crystal panel.
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 May 21, 1991 and granted January 9, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2013.
- 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.