Container seal inspection method
CA 2307930 A1 · Owner: Iwasaki, Yoshio · Inventors: Iwasaki, Yoshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method to determine the quality of a seal of a sealed container in a short period of time in an accurate manner. The method includes a first step for measuring the position of a center portion of said lid in the height direction prior to said retort sterilization process; a second step for exposing said sealed container to a pressurized air at least once in said retort sterilization process; a third step for taking out said container from a retort autoclave after the second step and measuring-the position of the center portion of said lid in the height direction which was measured in the first step; and a fourth step for determining the quality of seal from a result obtained by comparing …
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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 May 9, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 9, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 2022.
- 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.