Apparatus for oxygenating medium
CA 2008585 C · Owner: Bliem, Rudolf F. · Inventors: Taiariol, Van; Bliem, Rudolf F.; Oakley, Robert V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oxygenator, particularly for proving oxygen and/or carbon dioxide or other gases to culture medium used in the in vitro culture of animal cells comprised, of a collection of elongate gas-permeable liquid-impermeable tubes through which oxygen-containing gas flows and permeates through the tube walls to provide bubble- and foam-free oxygen gas to medium in contact with or in proximity to the tubes, the individual tubes having an outside diameter of less than about 1 mm and a wall thickness of from about 0.1 mm to about 0.25 mm the, tube collection preferably be radially spread apart at at least one point along its length.
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 January 25, 1990 and granted March 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 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.