1
John E Oltman, Robert B Dopp: Seal for metal-air batteries. Ray O Vac Corporation, Raymond J Kenny, Edward A Steen, August 10, 1982: US04343869 (58 worldwide citation)

An improved metal-oxygen button cell having a thermoplastic sealing annular ring placed between the cathode assembly and the grommet is provided. The cell basically is comprised of the following components: a conductive metal can, a cathode assembly in the can, a conductive metal cover, an anode mat ...


2
Joseph L Passaniti, Robert B Dopp: Metal-air cathode and cell having catalytically active manganese compounds of valence state +2. Rayovac Corporation, Thomas F Woods, May 3, 1994: US05308711 (44 worldwide citation)

An air cathode for a metal-air cell and methods for making it are provided. In the air cathode of the present invention, manganese compounds of valence state +2 act as catalysts for the reduction of oxygen, and are distributed substantially evenly throughout a carbon matrix. Manganese compounds of v ...


3
John E Oltman, Denis D Carpenter, Robert B Dopp: Metal-air cathode button cell. Rayovac Corporation, Kenyon & Kenyon, May 27, 1986: US04591539 (30 worldwide citation)

A button cell having an air cathode assembly wherein grooves are constructed between the cathode and cell container to provide a gas diffusion passage from a port extending through the container to the face of the air cathode.


4
Robert B Dopp, John Edward Oltman: Metal-air cathode can and electrochemical cell made therewith. Rayovac Corporation, Thomas D Wilhelm, Brian R Tumm, March 31, 1998: US05733676 (29 worldwide citation)

This invention pertains to metal-air electrochemical cells wherein one or more air entry ports is located in the bottom of the cathode can, to provide for entry of oxygen-rich air into the cathode can, where the oxygen participates in the chemical reaction whereby the cell produces electrical energy ...


5
Robert B Dopp: Method for manufacturing cells utilizing centrifuging techniques. Ray O Vac Corporation, Edward A Steen, Raymond J Kenny, Gilbert W Rudman, January 25, 1983: US04369568 (28 worldwide citation)

An improved metal-air button cell is provided. The cell is comprised of the following components: a conductive metal can, a cathode assembly in the can, a conductive metal cover, and a separator between the cathode assembly, wherein the metal cover and separator provide borders of a space in which a ...


6
John E Oltman, Robert B Dopp, Denis D Carpenter: Seal tab for a metal-air electrochemical cell. Rayovac Corporation, Kenyon & Kenyon, March 10, 1987: US04649090 (26 worldwide citation)

A seal tab consisting of an acrylic adhesive applied to a biaxially-oriented three-ply synthetic paper of polypropylene is used as a sealing means for metal-air electrochemical cells, and batteries constructed thereof. The seal tabs prevent loss of rate capability and capacity due to interactions wi ...


7
John E Oltman, Robert B Dopp, John D Burns: Metal-air cell having thin-walled anode and cathode cans. Rayovac Corporation, Tom Wilhelm, Brian Tumm, October 22, 1996: US05567538 (26 worldwide citation)

This invention pertains to alkaline electrochemical cells, typically to metal-air cells of the button-type. Non-reactive elements of cells of the invention are thinner than corresponding non-reactive elements of prior art cells. Such elements can be made thinner because of improved structures of suc ...


8
Robert B Dopp: Sealing sleeve. Rayovac Corporation, December 13, 1988: US04791034 (24 worldwide citation)

A sealing sleeve for the interface of metal components of electrochemical cells and the like is disclosed. A highly dependable seal substantially preventing fluid passage results from use of the disclosed sleeve having ridges protruding inwardly of its inner surface and having a flared region wherei ...


9
Rodney Stuart McKenzie, Robert B Dopp: Metal-air cathode can, and electrochemical cell made therewith. Rayovac Corporation, Thomas D Wilhelm, Brian R Tumm, August 18, 1998: US05795667 (22 worldwide citation)

This invention pertains to metal-air electrochemical cells wherein one or more air entry ports is located in the bottom of the cathode can, to provide for entry of oxygen-rich air into the cathode can, where the oxygen participates in the chemical reaction whereby the cell produces electrical energy ...


10
Joseph L Passaniti, Robert B Dopp: Method of making air cathode material having catalytically active manganese compounds of valance state +2. Rayovac Corporation, Thomas F Woods, January 3, 1995: US05378562 (22 worldwide citation)

A method of making an air cathode material for a metal-air cell is provided. In the air cathode material of the present invention, manganese compounds of valence state +2 act as catalysts for the reduction of oxygen, and are distributed substantially evenly throughout a carbon matrix. Manganese comp ...