Indicator for iontophoresis system
CA 2121591 C · Owner: Roe, David K. · Inventors: Haak, Ronald P.; Roe, David K.; Theeuwes, Felix
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus (11) for delivery of a medicament drug or other therapeutic agent , transdermally to a body by iontophoresis is provided. The apparatus (11) provides a means (13) for measuring and displaying the cumulative amount of the medicament delivered to the body by monitoring the amount of a metal initially present at , the anode (45), that is transferred to the cathode (41) in a subsidiary electrolyte call (47) through which the drive current for the apparatus (11) passes. Optionally, the apparatus also provides a plurality of light emitting devices (63-1) that display a measure of the cumulative amount of medicament delivered by, use of visually distinguishable light colors or by use …
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 December 11, 1992 and granted May 28, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2014.
- 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.