Efficient conductor routing for inkjet printhead
CA 2083340 C · Owner: Hewlett-Packard Company · Inventors: Mcclelland, Paul H.; Trueba, Kenneth E.; Meyer, Neal W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel, nozzle member for an inkjet print cartridge and method of forming the nozzle member are disclosed. In this method, the nozzles or orifices are formed in a flexible polymer tape by Excimer laser ablation. In one embodiment, a substrate containing heating elements is mounted on the back of the nozzle member. Conductors for providing electrical signals to the substrate are located inside the flexible polymer tape and end at a via overlying an associated electrode on the substrate. The via electrically connects the conductors to the associated electrode.
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 19, 1992 and granted March 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 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.