Ink-contacting member, ink-absorbing member, ink tank and ink-jet cartridge
CA 2272810 C · Owner: Yamamoto, Hajime · Inventors: Hayashi, Hiroki; Shimizu, Eiichiro; Yamamoto, Hajime
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is an ink-contacting member used in an ink-jet recording apparatus which comprises, as a principal component a resin material obtained by adding a phenolic antioxidant having an isocyanurate skeleton represented by the formula.
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 May 26, 1999 and granted October 14, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2021.
- 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.