Ink container and ink jet recording apparatus using same
CA 2076594 C · Owner: Ujita, Toshihiko · Inventors: Ujita, Toshihiko; Matsumoto, Haruyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ink container includes a container body; a movable wall movable along an inside surface of the container body; the movable wall comprising a sealing portion in sealing contact with the inside surface of the container body and at least one tilt preventing portion for preventing the movable wall from tilting the tilt preventing portion being spaced from the sealing portion.
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 21, 1992 and granted September 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 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.
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.