Expired Canadian patentCanada
Integrated circuit and method for manufacturing
CA 2581938 C · Owner: Miller, Richard Todd · Inventors: Hindman, Gregory T.; Tom, Dennis W.; Miller, Richard Todd
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A semiconductor structure (5), fluid ejection device and methods for , manufacturing the same are provided such that a contact to a substrate (10) is formed from a conductive layer (30).
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 September 21, 2005 and granted February 11, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 21, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 21, 2005
GrantedFebruary 11, 2014
Term endedSeptember 21, 2025
Patent numberCA 2581938 C
Classification (IPC)H01L23/31 +2 more
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.