Process for the manufacture of pzt films
CA 2128311 C · Owner: Gesemann, Hans-Jurgen · Inventors: Gesemann, Hans-Jurgen; Seffner, Lutz; Volker, Karin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing PZT films on a substrate by thick-film technique in which the PZT films contain simply modified PZT and/or PZT with complex perovskite. PZT with a Zr content X of X ~ X p + 0.02 ~ X p + 0.10 is used where X p is , the Zr, content of the base composition at the morphotropic phase boundary determined by the, maximum coupling factor K ~.
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 18, 1994 and granted September 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2016.
- 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.