Ink cartridge and method of ink injection thereinto
CA 2386730 C · Owner: Ota, Mutsuhiko · Inventors: Shinada, Satoshi; Ota, Mutsuhiko; Miyazawa, Hisashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ink cartridge 1 is detachably connected to a head of a record apparatus and has a vessel main body 2 having an ink tank chamber 11 opened to the atmosphere in a state in which the head and the cartridge are connected and an ink end chamber (second ink storage chamber 16 etc.) communicating with the ink tank chamber 11 and leading to the head. The vessel main body 2 is formed with a first opening 85 communicating with the ink tank chamber 11 and a second opening 86 communicating with the ink end chamber.
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 17, 2002 and granted June 14, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2024.
- 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.