Method for sterilizing internal surfaces of an edible liquid packaging machine
CA 2174479 C · Owner: Larmer, Ralph Douglas · Inventors: Kelbrick, William John; Rouble, Vincent Joseph; Pepper, Stuart Lloyd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the sterilization of the internal cabinet of a packaging machine, such as an edible liquid packaging machine, utilizes the introduction of a fog of hydrogen peroxide laden air into the cabinet of the machine followed by hot air. In particular the method, may be used to sterilize a machine that has an endless conveyor for receiving containers and transporting the containers to a container sterilization station a, product filling station, and a container sealing station all within the cabinet. The machine is equipped with a positive pressure airflow though it, whereby the air is passed through a plurality of HEPA (High Efficiency Particulate Absolute) filters prior to its entry …
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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 18, 1996 and granted December 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2018.
- 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.