The Gillette Company

Duracell U.S. Operations, Inc.

Other

Yichun Wang

Paul Albert Christian

Kirakodu S Nanjundaswamy

Jennifer Anne Nelson

Fan Zhang

Nikolay Krastev Iltchev

Russell E Hopson

Andrew G Gilicinski

Cahit Eylem

In Tae Bae

Rimma A Sirotina

James Joseph Cervera

Joseph E Sunstrom

Gary A Miller

A primary battery includes a cathode having a non-stoichiometric metal oxide including transition metals Ni, Mn, Co, or a combination of metal atoms, an alkali metal, and hydrogen; an anode; a separator between the cathode and the anode; and an alkaline electrolyte.

Primary alkaline battery

A primary battery includes a cathode having an acid-treated manganese dioxide, an anode, a separator between the cathode and the anode, and an alkaline electrolyte.

Acid-treated manganese dioxide and methods of making thereof

Primary alkaline batteries containing pentavalent bismuth metal oxides are disclosed.

Primary alkaline battery containing bismuth metal oxide

Electrochemical cells and methods of making cells are disclosed. In some embodiments, an electrochemical cell includes a housing, a negative electrode in the housing, a positive electrode in the housing, the positive electrode including a wax, and a separator between the negative and positive electrodes.

Electrochemical cells

A method of changing the color of an ink mark includes applying an ink including a solvent and a triarylmethane dye dissolved in the solvent that changes color if contacted with a chemical agent to a substrate. The dye is soluble in phenyl cellosolve. A chemical agent is then applied to cause the dye to change color.

Eradicable inks

Solvent-based pen inks are provided. The inks include an acid dye and a solvent system that includes an oxa acid solvent, the oxa acid solvent functioning as the primary solvent for the acid dye. Preferred inks are eradicable, and include an acid dye that decolorizes if contacted with a decolorizing compound.

Solvent-based pen inks

An eradicable ink contains an essentially non-aqueous solvent and a colorant, dissolved in the solvent, that changes color if contacted with a sulfite or an amine. Moreover, a water soluble colorant containing a counterion hydrophilic can be converted into a water insoluble colorant by substituting a hydrophobic counterion for the hydrophilic counterion.

An ink/eradicator fluid combination includes an ink containing a dye and a binding agent, and an eradicator fluid containing a basic nitrogen compound. The binding agent is capable of binding to the basic nitrogen compound.

Growing community of inventors

West Roxbury, MA, United States of America

Yichun Wang