Process and device for the simultaneous measurement of the amount of oxygen and residual pressure in a package
CA 2026751 C · Owner: Huerlimann, Peter · Inventors: Huerlimann, Peter; Van Meir, Eugene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The apparatus comprises a means (1) for removing gas a pressure sensor (5) and a pressure measuring system (6) in a branched arrangement and, downstream of the means for removing gas, a two-way valve (7), a vacuum pump (8) for displacing the residual gas from the pack an oxygen meas-, uring system (9) and a compression chamber (10) connected to the two-way valve far resetting to atmospheric pressure.
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 October 2, 1990 and granted February 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2012.
- 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.