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Expired Canadian patentCanada

Non-aqueous electrolyte cell

CA 1308778 C · Owner: Furukawa, Nobuhiro · Inventors: Yoshimura, Seiji; Furukawa, Nobuhiro; Takahashi, Masatoshi

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A non-aqueous electrolyte cell having a positive electrode, a negative electrode and an electrolyte contained in a cell can, the electrolyte including a solute and an organic solvent, the solute comprising lithium trifluoromethanesulfonate. The organic solvent comprises an organic solvent mixture of at least two high boiling point solvents including at least one cyclic carbonates. The negative electrode comprises a lithium alloy. The electrolyte includes a reaction inhibitor added thereto for inhibiting reaction between the cell can and the electrolyte. Further the lithium trifluoromethanesulfonate is heated, dried and dehydrated in a vacuum at 80-150°C.

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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

  • Granted October 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 8, 1988
GrantedOctober 13, 1992
Term endedOctober 13, 2009
Patent numberCA 1308778 C
Classification (IPC)H01M6/16 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedNov 8, 1988Patent grantedOct 13, 1992Term endedOct 13, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.