Stephen L Marsh

US Patent:

6815110, Nov 9, 2004

Filed:

Sep 7, 2001

Appl. No.:

09/949301

Inventors:

Stephen A. Marsh - Carlisle MA

Assignee:

Integrated Fuel Cell Technologies, Inc. - Bedford MA

International Classification:

H01M 810

US Classification:

429 30, 429 32, 429 34, 429 38, 429 35, 429 36

Abstract:

A fuel cell is disclosed which is formed on a semiconductor wafer by etching channel in the wafer and forming a proton exchange membrane PEM barrier in the etched channel. The barrier divides the channel into two. A hydrogen fuel is admitted into one of the divided channels and an oxidant into the other reacts with a catalyst formed on an anode electrode at the hydrogen side of the channel to release hydrogen ions (protons) which are absorbed into the PEM. The protons migrate through the PEM and recombine with return hydrogen electrons on a cathode electrode on the oxygen side of the PEM and the oxygen to form water.

US Patent:

6991866, Jan 31, 2006

Filed:

Sep 29, 2004

Appl. No.:

10/953038

Inventors:

Stephen A. Marsh - Carlisle MA, US

Assignee:

Integrated Fuel Cell Technologies, Inc. - Bedford MA

International Classification:

H01M 8/10

US Classification:

429 30, 429 32, 429 34

Abstract:

A fuel cell is disclosed which is formed on a semiconductor wafer by etching channel in the wafer and forming a proton exchange membrane PEM barrier in the etched channel. The barrier divides the channel into two. A hydrogen fuel is admitted into one of the divided channels and an oxidant into the other. The hydrogen reacts with a catalyst formed on an anode electrode at the hydrogen side of the channel to release hydrogen ions (protons) which are absorbed into the PEM. The protons migrate through the PEM and recombine with return hydrogen electrons on a cathode electrode on the oxygen side of the PEM and the oxygen to form water.

US Patent:

7029779, Apr 18, 2006

Filed:

Nov 9, 2004

Appl. No.:

10/985736

Inventors:

Stephen A. Marsh - Carlisle MA, US

Assignee:

Integrated Fuel Cell Technologies, Inc. - Burlington MA

International Classification:

H01M 8/10
H01M 8/02

US Classification:

429 30, 429 32, 429 34

Abstract:

A fuel cell is disclosed which is formed on a semiconductor wafer by etching channel in the wafer and forming a proton exchange membrane PEM barrier in the etched channel. The barrier divides the channel into two. A hydrogen fuel is admitted into one of the divided channels and an oxidant into the other. The hydrogen reacts with a catalyst formed on an anode electrode at the hydrogen side of the channel to release hydrogen ions (protons) which are absorbed into the PEM. The protons migrate through the PEM and recombine with return hydrogen electrons on a cathode electrode on the oxygen side of the PEM and the oxygen to form water.

US Patent:

8172912, May 8, 2012

Filed:

Nov 15, 2004

Appl. No.:

10/989116

Inventors:

Stephen A. Marsh - Carlisle MA, US
Donald M. Parker - Marblehead MA, US
Peter N. Pintauro - Shaker Heights OH, US

Assignee:

Encite, LLC - Burlington MA

International Classification:

B01J 7/00
H01M 8/06
C01B 3/36
C01B 6/24
C01B 3/00

US Classification:

48 61, 48197 R, 423644, 4236582

Abstract:

A self-regulating gas generator that, in response to gas demand, supplies and automatically adjusts the amount of gas (e. g. , hydrogen or oxygen) catalytically generated in a chemical supply chamber from an appropriate chemical supply, such as a chemical solution, gas dissolved in liquid, or mixture. The gas generator may employ a piston, rotating rod, or other element(s) to expose the chemical supply to the catalyst in controlled amounts. The gas generator may be used to provide gas for various gas consuming devices, such as a fuel cell, torch, or oxygen respiratory devices.

US Patent:

8431281, Apr 30, 2013

Filed:

Jul 28, 2008

Appl. No.:

12/220787

Inventors:

Stephen A. Marsh - Carlisle MA, US

Assignee:

Encite, LLC - Burlington MA

International Classification:

H01M 8/00

US Classification:

429431, 429300

Abstract:

A fuel cell is disclosed which is formed on a semiconductor wafer by etching channel in the wafer and forming electronics on the substrate electronically coupled to the fuel cell that controls generation of power by the fuel cell through electrical communication with the fuel cell. A hydrogen fuel is admitted into one of the divided channels and an oxidant into the other. The hydrogen reacts with a catalyst formed on an anode electrode at the hydrogen side of the channel to release hydrogen ions (protons) which are absorbed into the PEM. The protons migrate through the PEM and recombine with return hydrogen electrons on a cathode electrode on the oxygen side of the PEM and the oxygen to form water.

US Patent:

8518594, Aug 27, 2013

Filed:

Mar 2, 2007

Appl. No.:

11/713459

Inventors:

Stephen A. Marsh - Carlisle MA, US

Assignee:

Encite, LLC - Burlington MA

International Classification:

H01M 8/00

US Classification:

429446, 429492

Abstract:

A power cell comprises a membrane with a first side and a second side. The membrane has a geometric structure encompassing a volume. The power cell also has a cover that is coupled to the membrane to separate the first flow path from the second flow path at the membrane. In the power cell, first and second catalyst is in gaseous communication with respective first flow path and second flow path and in ionic communication with respective first and second sides of the membrane. Furthermore, a first electrode is electrically coupled to the first catalyst on the first side of the membrane, and a second electrode is electrically coupled to the second catalyst on the second side of the membrane. In another embodiment, the power cell further includes a substrate on which the membrane is coupled.

US Patent:

8563192, Oct 22, 2013

Filed:

Dec 22, 2009

Appl. No.:

12/645263

Inventors:

Stephen A. Marsh - Carlisle MA, US
Donald M. Parker - Marblehead MA, US
William J. Grande - Pittsford NY, US

Assignee:

Encite LLC - Burlington MA

International Classification:

H01M 8/24
H01M 8/04

US Classification:

429444, 429513

Abstract:

Among other things, a gas storage system includes a group of capsules and an activation element coupled to the group. The group of capsules are formed within a substrate and contain gas stored at a relatively high pressure compared to atmospheric pressure. The activation element is configured to deliver energy in an amount sufficient to cause at least one of the capsules to release stored gas.

US Patent:

20060110636, May 25, 2006

Filed:

Dec 29, 2005

Appl. No.:

11/322760

Inventors:

Stephen Marsh - Carlisle MA, US

International Classification:

H01M 8/00
H01M 6/14

US Classification:

429013000, 429300000

Abstract:

A fuel cell is disclosed which is formed on a semiconductor wafer by etching channel in the wafer and forming electronics on the substrate electronically coupled to the fuel cell that controls generation of power by the fuel cell through electrical communication with the fuel cell. A hydrogen fuel is admitted into one of the divided channels and an oxidant into the other. The hydrogen reacts with a catalyst formed on an anode electrode at the hydrogen side of the channel to release hydrogen ions (protons) which are absorbed into the PEM. The protons migrate through the PEM and recombine with return hydrogen electrons on a cathode electrode on the oxygen side of the PEM and the oxygen to form water.