Anti-contaminating catheter sheath with filter/closure barriers
CA 2215910 C · Owner: Lorenzen, Rick D. · Inventors: Lorenzen, Rick D.; Madsen, Edward B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Filtration and closure barriers (50, 100 260, 400) are disclosed which , prevent passage of gas-carried contamination between the atmosphere and a collapsible sheath (26), which surrounds a catheter tube (12) during , insertion and/or removal of the catheter tube from the respiratory tract of a medical patient.
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 April 20, 1995 and granted February 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2017.
- 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.