Pump for use in medical technology
CA 2115824 C · Owner: Riedweg, Robert · Inventors: Berner, Werner; Riedweg, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The pump as described in this invention comprises electronic and mechanical components which allow an individually adjustable operation. For this purpose, this invention provides for components (2,5,8) which periodically transform a driving current for an electrical drive (1). An adjustable clock generator (3) adjusts their transformation frequency. The pumping volume is determined and limited as desired by means of a position detection device (4). As provided for by this invention the, pump also comprises components (7) gor measuring the driving current, which interact with an adjustable current-limiting device (5), thus allowing the pumping pressure of the pump to be adjusted and limited. …
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 February 16, 1994 and granted August 10, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 16, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 16, 2016.
- 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.