David B Pappas, Age 379 Pomeroy St, Allston, MA 02134

6447947, Sep 10, 2002

Dec 13, 1999

09/459511

Rokeya Huq - Norwood MA
Peter R. Moses - Windham NH
David Pappas - Waltham MA
Guang Wei - Southborough MA

The Gillette Company - Boston MA

H01M 600

429176, 296231, 429166

A process for heat treating an anode casing of a zinc/air depolarized cell after the casing has been formed but before anode material comprising zinc is inserted therein. The anode casing has a layer of copper on its inside surface. The process comprises heat treating the anode casing by passing a gas at a temperature between about 200Â C. and 700Â C. , preferably between about 300Â C. and 600Â C. in contact therewith to form a heat treated anode casing and then cooling said heat treated anode casing to ambient temperature. The heat treated anode casing is stored away from atmospheric air until anode active material is inserted therein during cell assembly. The heat treating process significantly reduces gassing during cell discharge and storage and eliminates the need to add mercury to the anode material.

6500576, Dec 31, 2002

Jun 28, 2000

09/605902

Stuart M. Davis - Norfolk MA
Peter R. Moses - Windham NH
David L. Pappas - Waltham MA

The Gillette Company - Boston MA

H01M 400

429 27, 429 82, 429 53

A metal-air battery includes (a) an anode; (b) a cathode including a metal that reduces oxygen; (c) a housing for the anode and cathode having an air access that allows oxygen to contact the cathode; (d) a separator between the anode and the cathode; and (e) a hydrogen recombination catalyst within the housing. The hydrogen recombination catalyst can include a Pd, Pt, Ru metal or a salt thereof, and CuO.

6551742, Apr 22, 2003

Nov 13, 2000

09/711470

Rokeya Huq - Norwood MA
Peter R. Moses - Windham NH
Guang Wei - Southborough MA
David Pappas - Waltham MA

The Gillette Company - Boston MA

H01M 600

429176, 296231, 429 27, 429 59, 429229, 429212

A fluorosurfactant, preferably an anionic fluorosurfactant, can be added to the anode mixture of a zinc/air cell. A desirable surfactant is an anionic fluoroaliphaticcarboxylate. The addition of the surfactant reduces gassing and improves cell performance. The anode casing can also be treated with the surfactant solution prior to inserting the anode mixture therein. The anode casing of a zinc/air depolarized cell can also be heat treated after the casing has been formed but before anode material comprising zinc is inserted therein. The anode casing has a layer of copper on its inside surface. The process comprises heat treating the anode casing by passing a gas at a temperature between about 200Â C. and 700Â C. , preferably between about 300Â C.

6632557, Oct 14, 2003

Oct 26, 1999

09/427371

Edward Curelop - Brockton MA
Sharon Lu - Andover MA
Stephen McDevitt - Somerville MA
David Pappas - Waltham MA
Joseph Sunstrom - Stoughton MA

The Gillette Company - Boston MA

H01M 488

429 42, 429 12, 429 13, 429 33, 429 40, 429224, 296231, 296235

A textured dual layer metal air cathode is disclosed. The cathode includes a first layer that contains 30% to 70% organic polymer by weight, a second layer that contains 10% to 30% organic polymer by weight, and a catalyst. The first layer and the second layer contact each other at a textured interface.

2004004, Mar 11, 2004

Sep 4, 2003

10/655171

Edward Curelop - Brockton MA, US
Sharon Lu - Andover MA, US
Stephen McDevitt - Somerville MA, US
David Pappas - Waltham MA, US
Joseph Sunstrom - Stoughton MA, US

The Gillette Company, a Delaware corporation

H01M012/06
H01M004/90
H01M004/86
H01M004/88
H01M004/92

429/027000, 429/042000, 429/043000, 502/101000

A textured dual layer metal air cathode is disclosed. The cathode includes a first layer that contains 30% to 70% organic polymer by weight, a second layer that contains 10% to 30% organic polymer by weight, and a catalyst. The first layer and the second layer contact each other at a textured interface.

5940975, Aug 24, 1999

Jun 17, 1997

8/877137

Thomas G. Decker - Arlington MA
Gregory P. Lundy - Westminster CO
David L. Pappas - Waltham MA
Richard P. Welty - Boulder CO
C. Robert Parent - Westwood MA

B26B 2160

3034654

Improved razors and razor blades and processes for producing razor blades or similar cutting tools with sharp and durable cutting edges, by hard-carbon coating of blades with amorphous diamond, preferably using a filtered cathodic arc plasma source. A coating of amorphous diamond having at least 40 percent sp3 carbon bonding, a hardness of at least 45 gigapascals and a modulus of at least 400 gigapascals is applied to the sharpened edge of a substrate. The substrate may be mechanically honed, and there is no interlayer between the substrate and the amorphous diamond coating. The coating imparts stiffness and rigidity to a thin blade while maintaining a high aspect ratio.

6333123, Dec 25, 2001

Jun 28, 2000

9/605596

Stuart M. Davis - Norfolk MA
Peter R. Moses - Windham NH
David L. Pappas - Waltham MA

The Gillette Company - Boston MA

H01M 1034

429 57

An alkaline battery includes a cathode, an anode, a separator, an alkaline electrolyte, and a hydrogen recombination catalyst. The hydrogen recombination catalyst includes a hydrogen oxidizing material, such as CuO, and an activating material. The activating material includes a first activating component and a second activating component. The components of the activating material can be Pd, Pt, Ru metals or salts thereof.

6289593, Sep 18, 2001

Nov 3, 1999

9/433774

Thomas G. Decker - Arlington MA
Gregory P. Lundie - Westminster CO
David L. Pappas - Waltham MA
Richard P. Welty - Boulder CO
C. Robert Parent - Westwood MA

B26B 2158
B26B 2160

3034654

Improved razors and razor blades and processes for producing razor blades or similar cutting tools with sharp and durable cutting edges, by hard-carbon coating of blades with amorphous diamond, preferably using a filtered cathodic arc plasma source. A coating of amorphous diamond having at least 40 percent sp3 carbon bonding, a hardness of at least 45 gigapascals and a modulus of at least 400 gigapascals is applied to the sharpened edge of a substrate. The substrate may be mechanically honed, and there is no interlayer between the substrate and the amorphous diamond coating. The coating imparts stiffness and rigidity to a thin blade while maintaining a high aspect ratio.