Device and process for charging of rechargeable batteries of implants
CA 2271075 C · Owner: Volz, Andreas · Inventors: Volz, Andreas; Leysieffer, Hans; Baumann, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device and a process for charging of rechargeable NiCd Ni-metal hydride or , lithium, batteries (12) of implants by transcutaneous transmission of electric power from an external, power transmission part (11) to a power receiving part (10) which forms a part of the implant. The charging device is provided with a charging current detector (27 32, 34) , which, in a first, charging phase (T1) allows a relatively high charging current (I L) to flow and which, after the, cell voltage (U2) of the battery has reached a predetermined limiting charging voltage (U G), in, a second charging phase (T2) reduces the charging current as compared to the charging current, which flows at the end of …
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 May 5, 1999 and granted April 15, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2021.
- 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.