Gasket for miniature galvanic cells
CA 2311320 A1 · Owner: Eveready Battery Company, Inc. · Inventors: Getz, Rose A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An insulating gasket (1) is provided for a galvanic cell adapted for disposal , against the peripheral area of a flat electrode within the cell, the gasket comprising a ribbed portion (11) that extends between opposing segments of the gasket. The ribbed portion (11) functions as a restraining means to prevent or reduce bowing of the central area of the flat electrode during or after assembly of the cell. Also provided is a galvanic cell, for example an air depolarised cell that comprises the , gasket, and a method of sealing galvanic cells using the gasket.
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 November 24, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2020.
- 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.