Ink container and ink jet recording apparatus using same
CA 2082480 C · Owner: Kotaki, Yasuo · Inventors: Sato, Yohei; Takenouchi, Masanori; Nakajima, Kazuhiro
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 cylindrical member having a closed end and an opposite open end; a flexible member covering the open end of the cylindrical member to define an ink containing portion; the flexible member having a bent portion movable along an internal surface of the cylindrical member with consumption of the ink therein wherein, movement of the bent portion is irreversible.
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 November 9, 1992 and granted October 7, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 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.