Magnetic migration display panel
CA 2211280 C · Owner: Kabushiki Kaisha Pilot Corporation (Also Trading As Pilot Corporation) · Inventors: Tazaki, Hiroshi; Nojima, Teruaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic migration display panel including a dispersion liquid layer composed of a magnetic particle a dispersion medium composed of an organic solvent a, thickening agent composed of fatty acid bis-amide with a hydroxyl group having a melting point of 120°C to 160°C and a coloring material as desired, on a substrate is provided.
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 July 24, 1997 and granted October 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2019.
- 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.