Method and apparatus for testing containers for corrosion
CA 2067897 A1 · Owner: Orrell, Martin · Inventors: Ratcliff, Ian Henry; Dang, Ngoc Duyen Philip; Holden, Anthony Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of testing a container for corrosion comprising the steps of applying a signal in the range 30kHz - 100kHz to said container and monitoring the attenuation of said signal in said container. The method is particularly useful for testing cylinders in packs without the need to dismantle the pack.
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 May 1, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 1, 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.