Method for manufacturing an orifice mechanism capable of low fluid flow rates
CA 2470732 C · Owner: Cardinal Health Switzerland 515 Gmbh · Inventors: Russell, Scott M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
18- A method for manufacturing an orifice mechanism includes the steps of providing a mandrel having a length and helically wrapping a winding around at least a portion of the length of the mandrel. The mandrel and the winding define a first channel for carrying a drug therethrough. An inlet is at one end of the winding and an outlet is at the other end of the winding.
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 June 11, 2004 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2026.
- 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.