Liquid container, recording head using same and recording apparatus using same
CA 2076926 C · Owner: Nakajima, Kazuhiro · Inventors: Nakajima, Kazuhiro; Kotaki, Yasuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid container includes a plurality of chambers; a liquid supply port provided in one of the chambers; an air vent provided in another one of the chambers; and a continuous liquid supply material wherein adjacent ones of the chambers are in fluid communication with each other only through the liquid supply material.
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 26, 1992 and granted April 29, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 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.