Daniel Darga resumes & CV records
Resumes
Daniel J Darga, 54Edgewater, MD
Daniel Darga Phones & Addresses
Edgewater, MD
2142 E Chevy Chase Dr, Glendale, CA 91206
Studio City, CA
3830 Mohr Ave, Pleasanton, CA 94588 925-4257247
10 Ketchum St, Victor, NY 14564 585-9247281
Clarkston, MI
Farmington Hills, MI
Novi, MI
Detroit, MI
Wixom, MI
Ann Arbor, MI
3830 Mohr Ave, Pleasanton, CA 94588
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Daniel J Darga
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Work
Position:
Professional/Technical
Mentions for Daniel J Darga
Publications & IP owners
Us Patents
Bifurcation Of Flow Channels In Bipolar Plate Flowfields
US Patent:
7718298, May 18, 2010
Filed:
Mar 12, 2007
Appl. No.:
11/684705
Inventors:
Thomas W. Tighe - Bloomfield NY, US
Jon P. Owejan - Honeoye NY, US
Daniel J. Darga - Victor NY, US
Pinkhas A. Rapaport - Fairport NY, US
Jeffrey A. Rock - Fairport NY, US
Thomas A. Trabold - Pittsford NY, US
Jon P. Owejan - Honeoye NY, US
Daniel J. Darga - Victor NY, US
Pinkhas A. Rapaport - Fairport NY, US
Jeffrey A. Rock - Fairport NY, US
Thomas A. Trabold - Pittsford NY, US
Assignee:
GM Global Technology Operations, Inc. - Detroit MI
International Classification:
H01M 8/02
US Classification:
429 34, 429 38, 429 39
Abstract:
A bipolar plate for a fuel cell is provided that includes a flowfield having an active surface with an inlet region and an outlet region. The active surface of the flowfield is in communication with the inlet region and the outlet region and has at least one flow channel formed therein. The at least one flow channel further has a cross-sectional area at the outlet region that is less than a cross-sectional area at the inlet region. In particular embodiments, the at least one flow channel is bifurcated. A fuel cell stack including a fuel cell and the bipolar plate is also provided.
Method For Fuel Cell Start-Up With Uniform Hydrogen Flow
US Patent:
7955744, Jun 7, 2011
Filed:
Jun 14, 2007
Appl. No.:
11/762845
Inventors:
Jon R. Sienkowski - Rochester NY, US
Balasubramanian Lakshmanan - Pittsford NY, US
Daniel J. Darga - Victor NY, US
John P. Salvador - Penfield NY, US
Balasubramanian Lakshmanan - Pittsford NY, US
Daniel J. Darga - Victor NY, US
John P. Salvador - Penfield NY, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H01M 8/06
US Classification:
429429
Abstract:
A fuel cell system is provided having a fuel cell stack including a plurality of fuel cells. The fuel cell system includes an anode supply manifold in fluid communication with the plurality of fuel cells, the anode supply manifold adapted to deliver a anode supply stream to the plurality of fuel cells; an anode exhaust manifold in fluid communication with the anodes of the plurality of fuel cells, the anode exhaust manifold adapted to receive an anode exhaust stream from the plurality of fuel cells; a first valve in fluid communication with the anode supply manifold; and a second valve in fluid communication with the anode exhaust manifold. A method of starting the fuel cell system is also provided. The fuel cell system and method militates against a non-uniform distribution of the anode supply stream to the anodes of the plurality of fuel cells.
Fuel Cell Module Design For Robust Pressure Measurements In Freezing Conditions
US Patent:
8133624, Mar 13, 2012
Filed:
Apr 24, 2008
Appl. No.:
12/109003
Inventors:
Daniel J. Darga - Victor NY, US
Mark T. Schluentz - East Rochester NY, US
Steven L. Piedmont - Macedon NY, US
Mark T. Schluentz - East Rochester NY, US
Steven L. Piedmont - Macedon NY, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H01M 8/04
US Classification:
429429, 429411
Abstract:
A fuel cell system is disclosed including a fuel cell stack and pressure sensors, wherein bypass conduits having flow restriction devices disposed therein are provided for bypassing fluids around the fuel cell stack to militate against the accumulation of moisture in conduits in fluid communication with the pressure sensors.
Pem Fuel Cell Stack Hydrogen Distribution Insert
US Patent:
8470491, Jun 25, 2013
Filed:
Mar 10, 2010
Appl. No.:
12/720748
Inventors:
Daniel P. Miller - Victor NY, US
Anthony G. Chinnici - Rochester NY, US
Steven G. Goebel - Victor NY, US
Daniel J. Darga - Pleasanton CA, US
Gary M. Robb - Honeoye Falls NY, US
Clipson M. Class - Avon NY, US
Anthony G. Chinnici - Rochester NY, US
Steven G. Goebel - Victor NY, US
Daniel J. Darga - Pleasanton CA, US
Gary M. Robb - Honeoye Falls NY, US
Clipson M. Class - Avon NY, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H01M 2/38
US Classification:
429459, 429456, 429458, 429512, 429513
Abstract:
A fluid distribution insert adapted to be received within an inlet header of a fuel cell assembly. The fluid distribution insert includes a hollow insert with a first end and a second end. An inlet is formed at the first end of the hollow insert in fluid communication with a source of a reactant gas and adapted to receive the reactant gas therein. An outlet is formed intermediate the first end and the second end. The outlet is adapted to deliver the reactant gas to a plurality of fuel cells of the fuel cell assembly, wherein the hollow insert delivers the reactant gas to the fuel cells in a substantially simultaneous and uniform manner.
Bipolar Plate Having Offsets
US Patent:
2006005, Mar 9, 2006
Filed:
Sep 2, 2005
Appl. No.:
11/218930
Inventors:
Matthew Beutel - Webster NY, US
Daniel Darga - Victor NY, US
Daniel Darga - Victor NY, US
International Classification:
H01M 8/02
US Classification:
429038000, 429039000
Abstract:
A bipolar plate for a PEM fuel cell is disclosed. The plate includes a plurality of channels, wherein the ends of the channels are staggered. The plate also includes a plurality of tunnels, wherein the ends of the tunnels are staggered. The plate further includes a cathode and an anode, wherein a portion of the cathode overhangs a portion of the anode. These staggered/offset features allow for an increase the capillary meniscus of water droplets passing therethrough, allowing for a reduction in the pressure required to move the water through the cell and out to the header volume of the stack.
Fuel Cell Interconnects And Methods Of Fabrication
US Patent:
2013013, May 23, 2013
Filed:
Nov 16, 2012
Appl. No.:
13/678709
Inventors:
Bloom Energy Corporation - Sunnyvale CA, US
Daniel Darga - Pleasanton CA, US
Harald Herchen - Los Altos CA, US
Chockkalingam Karuppaiah - Cupertino CA, US
Daniel Darga - Pleasanton CA, US
Harald Herchen - Los Altos CA, US
Chockkalingam Karuppaiah - Cupertino CA, US
Assignee:
BLOOM ENERGY CORPORATION - Sunnyvale CA
International Classification:
H01M 8/02
US Classification:
429508, 419 66, 419 38
Abstract:
An interconnect for a fuel cell stack includes a first plurality of ribs extending from a first major surface of the interconnect and defining a first plurality of gas flow channels between the ribs, the ribs extending between a first rib end and a second rib end and having a tapered profile in a vertical dimension, perpendicular to the first major surface of the interconnect, proximate at least one of the first rib end and the second rib end, wherein the ribs comprise a flat upper surface and rounded edges between the flat upper surface and the adjacent gas flow channels, the rounded edges having a first radius of curvature, and wherein the gas flow channels comprise a rounded surface having a second radius of curvature, different from the first radius of curvature.
Coatings For Sofc Metallic Interconnects
US Patent:
2013023, Sep 5, 2013
Filed:
Feb 28, 2013
Appl. No.:
13/781206
Inventors:
James Wilson - San Francisco CA, US
Harald Herchen - Los Altos CA, US
Daniel Darga - Pleasanton CA, US
Manoj Pillai - Sunnyvale CA, US
Harald Herchen - Los Altos CA, US
Daniel Darga - Pleasanton CA, US
Manoj Pillai - Sunnyvale CA, US
Assignee:
BLOOM ENERGY CORPORATION - Sunnyvale CA
International Classification:
H01M 8/02
US Classification:
427115, 419 66, 419 62
Abstract:
Various methods of treating a chromium iron interconnect for a solid oxide fuel cell stack and coating the interconnect with a ceramic layer are provided.
Method Of Measurement And Estimation Of The Coefficient Of Thermal Expansion In Components
US Patent:
2018021, Aug 2, 2018
Filed:
Mar 21, 2018
Appl. No.:
15/927415
Inventors:
- Sunnyvale CA, US
Daniel Darga - Pleasanton CA, US
Michael Groesch - Sunnyvale CA, US
Harald Herchen - Los Altos CA, US
Vijay Srivatsan - Sunnyvale CA, US
Daniel Darga - Pleasanton CA, US
Michael Groesch - Sunnyvale CA, US
Harald Herchen - Los Altos CA, US
Vijay Srivatsan - Sunnyvale CA, US
International Classification:
G01N 25/16
G01N 27/02
G01N 27/02
Abstract:
Methods and systems for measuring and/or estimating a coefficient of thermal expansion (CTE) of a component of a fuel cell system. A CTE measurement technique includes securing a measurement member over a surface of the component via a seal having a melting point, heating the seal above its melting point of the seal, cooling the component, measurement member and seal to a second temperature below the melting point of the seal, and determining the CTE of the component based on the change in the span of the measurement member after cooling. A fuel cell component characterization technique includes measuring an electrical resistivity (ER), conductivity (EC), resistance or conductance of the component, measuring at least one additional property of the component which, together with ER, EC, resistance or conductance, correlates to the CTE of the component, and sorting the component based on the measurements.
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