Christopher S O'Brien

US Patent:

6916564, Jul 12, 2005

Filed:

Dec 31, 2002

Appl. No.:

10/335538

Inventors:

Lawrence G. Clawson - Dover MA, US
Christopher J. O'Brien - Watertown MA, US
Mark R. Hagan - Cambridge MA, US

Assignee:

Nuvera Fuel Cells, Inc. - Cambridge MA

International Classification:

H01M008/04
H01M008/12
H01M002/00
H01M002/02

US Classification:

429 17, 429 26, 429 34

Abstract:

A hydrogen fuel cell power system having improved efficiency comprises a fuel cell, a source of hydrogen gas, a compressor for creating a pressurized air stream, and a liquid supply which is heated by waste heat form the power system and evaporates into the pressurized air stream to produce a pressurized air and steam mixture. The pressurized air/steam mixture, which is preferably used as the oxidant in the fuel cell, is combusted with fuel in a burner to produce a high-temperature steam-laden exhaust stream. The high-temperature steam-laden exhaust stream drives an expander to produce a power output, and a power take-off from the expander uses the expander power to, for instance, drive an electrical generator, or drive other system components. The evaporation of liquid can take place external to the fuel cell, or can take place directly within the fuel cell, preferably using a cooling liquid that is directly injected into the fuel cell. The fuel cell power system advantageously uses the low-temperature waste heat of the fuel cell to evaporate liquid into the pressurized air, resulting in a steam/air mixture having a relatively large expansion potential.

US Patent:

20060188761, Aug 24, 2006

Filed:

Dec 30, 2005

Appl. No.:

11/323336

Inventors:

Christopher O'Brien - Somerville MA, US
Michael Leshchiner - Needham MA, US
James Cross - Melrose MA, US
Olga Polevaya - Needham MA, US
Darryl Pollica - Melrose MA, US

International Classification:

H01M 8/04
H01M 8/06

US Classification:

429019000, 429026000, 429034000, 429020000, 429024000, 429013000

Abstract:

A fuel cell power plant comprises a fuel processor and a fuel cell stack. The fuel cell stack has cooling water directly passing through its anode or cathode compartments. The high humidity cathode exhaust may be used to provide oxygen and steam for the autothermal reaction in the fuel processor, and may also be used in a combustor to generate heat and combustion exhaust. The combustion exhaust can be used to drive a turbine to generate power.

US Patent:

20090258259, Oct 15, 2009

Filed:

Apr 14, 2008

Appl. No.:

12/081298

Inventors:

Michael Leshchiner - Needham MA, US
Christopher O'Brien - Somerville MA, US
Yanlong Shi - Littleton MA, US
Darryl Pollica - Melrose MA, US

International Classification:

H01M 8/04
H01M 8/18

US Classification:

429 17, 429 20

Abstract:

A catalytic heat exchanger comprises a first channel and a second channel, separated by a partition wall. Catalyst coated metal substrates are removably inserted into the first or the second channel or both, which facilitates catalytic reactions in the channel. Energy released in the reaction in one channel is transferred through the partition wall to heat the fluid in the other channel. The catalytic heat exchangers can be used in a fuel processing system to convert hydrocarbon fuels to a hydrogen rich reformate.

US Patent:

60295244, Feb 29, 2000

Filed:

Jul 8, 1997

Appl. No.:

8/889707

Inventors:

Philip R. Klauder - Ambler PA
James O. Moore - Worcester PA
Christopher J. O'Brien - New Britain PA

Assignee:

Moore Products Co. - Springhouse PA

International Classification:

G01L 912

US Classification:

73718

Abstract:

A pressure transducer having a redundant fluid pressure sensor can be used to determine if the pressure transducer needs to be recalibrated. The pressure transducer comprises a fluid pressure sensor for measuring differential pressure. The fluid pressure sensor includes a pair of substantially identical pressure sensors for providing a variable electrical output as a function of a differential fluid pressure and a reference sensor for providing an electrical output independent of the differential fluid pressure. A conditioning circuit is provided for generating a frequency-based signal whose frequency is a function of the electrical output for each fluid pressure sensor. The electrical output of the first and second pressure sensors can be compared to determine whether the pressure transducer needs to be calibrated. In one embodiment, the pressure sensors comprise variable capacitors. The first and second capacitors each have one fixed plate and one movable plate responsive to differential fluid pressure across the movable plate.

US Patent:

56728085, Sep 30, 1997

Filed:

Jun 11, 1996

Appl. No.:

8/661851

Inventors:

Philip R. Klauder - Ambler PA
James O. Moore - Worcester PA
Christopher J. O'Brien - New Britain PA

Assignee:

Moore Products Co. - Spring House PA

International Classification:

G01L 2700

US Classification:

73 4R

Abstract:

A pressure transducer having a redundant fluid pressure sensor can be used to determine if the pressure transducer needs to be recalibrated. The pressure transducer comprises a fluid pressure sensor for measuring differential pressure. The fluid pressure sensor includes a pair of substantially identical pressure sensors for providing a variable electrical output as a function of a differential fluid pressure and a reference sensor for providing an electrical output independent of the differential fluid pressure. A conditioning circuit is provided for generating a frequency-based signal whose frequency is a function of the electrical output for each fluid pressure sensor. The electrical output of the first and second pressure sensors can be compared to determine whether the pressure transducer needs to be calibrated. In one embodiment, the pressure sensors comprise variable capacitors. The first and second capacitors each have one fixed plate and one movable plate responsive to differential fluid pressure across the movable plate.

US Patent:

58047360, Sep 8, 1998

Filed:

Jan 27, 1997

Appl. No.:

8/790253

Inventors:

Philip R. Klauder - Ambler PA
James O. Moore - Worcester PA
Christopher J. O'Brien - New Britain PA

Assignee:

Moore Products Co. - Spring House PA

International Classification:

G01L 912

US Classification:

73724

Abstract:

A pressure transducer having a redundant fluid pressure sensor can be used to determine if the pressure transducer needs to be recalibrated. The pressure transducer comprises a fluid pressure sensor for measuring differential pressure. The fluid pressure sensor includes a pair of substantially identical pressure sensors for providing a variable electrical output as a function of a differential fluid pressure and a reference sensor for providing an electrical output independent of the differential fluid pressure. A conditioning circuit is provided for generating a frequency-based signal whose frequency is a function of the electrical output for each fluid pressure sensor. The electrical output of the first and second pressure sensors can be compared to determine whether the pressure transducer needs to be calibrated. In one embodiment, the pressure sensors comprise variable capacitors. The first and second capacitors each have one fixed plate and one movable plate responsive to differential fluid pressure across the movable plate.

US Patent:

20220372129, Nov 24, 2022

Filed:

May 19, 2022

Appl. No.:

17/748629

Inventors:

- Horsham PA, US
Christopher O'Brien - Lafayette Hill PA, US
Jacqueline Perrigoue - Oreland PA, US
Marion Vetter - Pennington NJ, US

International Classification:

C07K 16/24
A61P 1/04
A61K 38/17
A61K 39/395

Abstract:

A method of treating inflammatory bowel disorders, such as ulcerative colitis, comprises administering an IL-23 inhibitor, such as an anti-IL-23p19 antibody (e.g., guselkumab) and a TNFα inhibitor, such as an anti-TNFα antibody (e.g., golimumab).

US Patent:

20220186879, Jun 16, 2022

Filed:

Jan 28, 2022

Appl. No.:

17/587324

Inventors:

- Waltham MA, US
Christopher John O'Brien - Waltham MA, US
Bryan Gordon - Goffstown NH, US

Assignee:

Ivys Inc. - Waltham MA

International Classification:

F17C 9/00

Abstract:

According to aspects, hydrogen fueling systems and methods are provided, including vehicle-to-vehicle communication techniques, hydrogen cooling techniques and/or hydrogen dispenser control techniques that facilitate improving aspects of a hydrogen fueling station.