Protective device for a repeatedly rechargeable electrochemical battery
CA 2270635 C · Owner: Bogdanowitz, Klaus · Inventors: Muller, Gerd; Muller, Dieter; Volz, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A protective device for a repeatedly rechargeable electrochemical battery (10) with a, battery housing (12), the protective device having at least one switching element (86) which can, be activated by a detector element (62) and which is designed or adjusted to prevent recharging, and/or discharging of the battery (10) in an impermissible operating state thereof. The protective, device has a hermetically sealed protective housing (54) which holds the battery housing (12). An, impermissible operating state of the battery (10) causes a change in shape (deflection) to be, impressed on the detector element (62). Preferably the at least one switching , element (86) is made as a make …
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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 3, 1999 and granted November 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 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.