Daniel E Dedrick

US Patent:

20070178042, Aug 2, 2007

Filed:

Nov 20, 2006

Appl. No.:

11/561564

Inventors:

Terry Johnson - Livermore CA, US
Daniel Dedrick - Oakland CA, US
Robert Stephens - Sterling Heights MI, US
Jennifer Chan - Fremont CA, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

C01B 6/24

US Classification:

423644000, 423648100

Abstract:

A hydrogen storage material based on sodium alanate contains aluminum in excess of the stoichiometric aluminum content of sodium aluminum tetrahydride. A particulate mixture of sodium alanates, aluminum, and a suitable metal-containing catalyst readily yields, upon heating of the mixture, its hydrogen content for delivery to a hydrogen-using device. The excess aluminum facilitates the sorption of hydrogen, minimizes the amount of necessary catalyst, and improves packing of the particulate mixture and heat transfer to and from the mixture.

US Patent:

20100061926, Mar 11, 2010

Filed:

Aug 25, 2009

Appl. No.:

12/547065

Inventors:

TERRY A. JOHNSON - LIVERMORE CA, US
DANIEL E. DEDRICK - OAKLAND CA, US
MICHAEL P. KANOUFF - LIVERMORE CA, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

C01B 3/02
B01J 19/00

US Classification:

4236481, 422198

Abstract:

Auxiliary heating systems that can supply heat to a hydrogen storage material, which may comprise at least one hydridable material, located inside a hydrogen storage tank have been developed. These auxiliary heating systems involve the catalytic combustion of hydrogen and oxygen in a catalytic heater to produce heat and combustion products. The heat produced from the catalytic combustion may then be transferred, either indirectly or directly, to the hydrogen storage material to stimulate the release of additional desorbable hydrogen that may be stored in the at least one hydrdidable material.

US Patent:

20100075183, Mar 25, 2010

Filed:

Aug 21, 2009

Appl. No.:

12/545280

Inventors:

Terry A. Johnson - Livermore CA, US
Daniel E. Dedrick - Oakland CA, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

H01M 8/00
H01M 2/00

US Classification:

429 13, 429 34

Abstract:

One exemplary embodiment includes a modular hydrogen storage system including discrete modules constructed and arranged so the hydrogen can be delivered from a discrete module independent of the rest of the system.

US Patent:

7560028, Jul 14, 2009

Filed:

Jul 18, 2006

Appl. No.:

11/489306

Inventors:

Blake A. Simmons - San Francisco CA, US
Robert W. Bradshaw - Livermore CA, US
Daniel E. Dedrick - Berkeley CA, US
David W. Anderson - Riverbank CA, US

Assignee:

Sandia Corporation - Livermore CA

International Classification:

C02F 1/44
C02F 1/469

US Classification:

210639, 62536, 62541, 205747, 210652, 210711, 210714, 210737

Abstract:

Disclosed is a method that achieves water desalination by utilizing and optimizing clathrate hydrate phenomena. Clathrate hydrates are crystalline compounds of gas and water that desalinate water by excluding salt molecules during crystallization. Contacting a hydrate forming gaseous species with water will spontaneously form hydrates at specific temperatures and pressures through the extraction of water molecules from the bulk phase followed by crystallite nucleation. Subsequent dissociation of pure hydrates yields fresh water and, if operated correctly, allows the hydrate-forming gas to be efficiently recycled into the process stream.