Method for fabricating a ceramic multi-layer substrate
CA 2093407 C · Owner: Inasaka, Jun · Inventors: Inasaka, Jun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for fabricating a ceramic multi-layer substrate by a greensheet process includes a step of bonding an organic resin film on a ceramic greensheet cast on a carrier film; a step of forming a through-hole on said ceramic greensheet in a state in which this ceramic greensheet retains one or both of said films and filling conductive paste in said through-hole by using one of said films as a mask; a step of removing one of said films. placing said ceramic green-sheet on a stack of ceramic greensheets forming a base. forming a laminate assembly by applying pressure thereto and removing the other of said films remaining in said assembly. It is possible to suppress the occurrence of …
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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 April 5, 1993 and granted December 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 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.