U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Additives for primary electrochemical cells having manganese dioxide cathodes

Patent 5342712 Issued on August 30, 1994. Estimated Expiration Date: Icon_subject May 17, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1058778

Rechargeable accumulator having a manganese dioxide electrode and an acid electrolyte
Patent #: 4096318
Issued on: 06/20/1978
Inventor: Wurmb, et al.

Electrically conductive and corrosion resistant current collector and/or container
Patent #: 4483785
Issued on: 11/20/1984
Inventor: Johnson ,   et al.

Method of preparing TiO2 thick film photoanodes for photoelectrochemical cells
Patent #: 4524091
Issued on: 06/18/1985
Inventor: Blaauw ,   et al.

Rechargeable alkaline manganese dioxide-zinc cell having improved cumulative capacity
Patent #: 5011752
Issued on: 04/30/1991
Inventor: Kordesch, et al.

Separator for alkaline cell and alkaline cell prepared by using this separator Patent #: 5026617
Issued on: 06/25/1991
Inventor: Kosaka, et al.

Inventors

Assignee

Application

No. 061976 filed on 05/17/1993

US Classes:

429/224, Manganese component is active material429/232Having inorganic binder or conductive filler

Examiners

Primary: Kalafut, Stephen

Attorney, Agent or Firm

Foreign Patent References

  • 3337568 DE. 04/13/1985
  • 64-6384 JP. 01/13/1989

International Class

H01M 004/62

Abstract

The invention relates to primary alkaline cells containing manganese dioxide cathode active material. Anatase titanium dioxide is added to the manganese dioxide cathode material resulting in an increase in the useful service life of the cell. Typically the anatase titanium dioxide comprises between 0.1 and 5 percent by weight of the cathode active material.

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