Expired European patentEurope
Ink jet head cartridge, ink tank cartridge using degradable plastic as part of construction or package thereof and ink jet apparatus having fitting part for the cartridges
EP 0490545 B1 · Applicant: CANON KABUSHIKI KAISHA
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 29, 1991 and granted October 16, 1996. A European patent lasts at most 20 years from filing, so its term ended November 29, 2011.
- A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by May 29, 2017.
- We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledNovember 29, 1991
PublishedJune 17, 1992
GrantedOctober 16, 1996
Term endedNovember 29, 2011
Application numberEP 91311135
Classification (CPC)B41J2/17513 +1 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.