Ink jet print head and manufacturing procedures
CA 2101683 C · Owner: Thiel, Wolfgang · Inventors: Thiel, Wolfgang; Gunther, Stephan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ink jet print head based on the edge-shooter principle, includes parts that carry chambers which are equipped with devices for ejecting ink from each chamber to an assigned nozzle. In each chamber carrying part, a group of chambers is arranged on a side facing a middle part and a single row of, nozzles which comprise k nozzle groups (1.1 1.2, 1.3, 1.4, ...), assigned to k chamber groups (101 102, 103, 104, ...) lies along, the edge face of a first chamber carrying part. The first nozzle group (1.1) is connected to the chamber group (101) contained in the first chamber carrying part, and the other k-1 nozzle groups (1.2, 1.3, 1.4, ...) to accessory chamber groups (102 103, 104, ...). The …
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 July 30, 1993 and granted November 24, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2015.
- 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.