Robert A Darling

US Patent:

7651555, Jan 26, 2010

Filed:

Aug 17, 2006

Appl. No.:

11/465432

Inventors:

Jeffrey L. Roseberry - Evanston IL, US
Robert A. Darling - Suwanee GA, US

International Classification:

B01D 39/00
B01D 53/12
B03C 3/68
B03C 3/72
A62B 7/08
B01J 19/08
B01D 47/00

US Classification:

96223, 96 18, 96 19, 96 63, 96 12, 422120, 422121, 422122, 422186, 423210

Abstract:

An onsite chemistry air filtration system to remove gaseous contaminants from air is disclosed. The onsite chemistry air filtration system of the present invention comprises: a conventional particulate filtration section, a photochemical filtration section, a static gas phase filtration section and a catalytic filtration section. The conventional particulate filtration section captures solids and condensables. In the photochemical filtration section, UV lamps generate bio-destruction and surface photochemical activity on a semiconductor catalyst material, provide a radiation source to irradiate airborne contaminant molecules and to energize their states to promote reactions and generate airborne ozone and radicals. In the static gas phase filtration section, gas phase filtration media is used to capture contaminants, concentrate them in a relatively confined space and allow airborne generated chemistries to concentrate and react in-situ, thereby creating a regeneration effect on the media. In the catalytic filtration section, catalytic media scavenges and converts airborne radicals and ozone to harmless by-products.

US Patent:

7828940, Nov 9, 2010

Filed:

Dec 10, 2009

Appl. No.:

12/635510

Inventors:

Jeffrey L. Roseberry - Evanston IL, US
Robert A. Darling - Suwanee GA, US

International Classification:

B01D 39/00
B01D 47/00
B03C 3/68
B03C 3/00
A62B 7/08
B01J 19/08

US Classification:

2041573, 96 22, 96 18, 96 19, 96 63, 96223, 422120, 422121, 422122, 4221863, 423210, 95273

Abstract:

An onsite chemistry air filtration system to remove gaseous contaminants from air is disclosed. The onsite chemistry air filtration system of the present invention comprises: a conventional particulate filtration section, a photochemical filtration section, a static gas phase filtration section and a catalytic filtration section. The conventional particulate filtration section captures solids and condensables. In the photochemical filtration section, UV lamps generate bio-destruction and surface photochemical activity on a semiconductor catalyst material, provide a radiation source to irradiate airborne contaminant molecules and to energize their states to promote reactions and generate airborne ozone and radicals. In the static gas phase filtration section, gas phase filtration media is used to capture contaminants, concentrate them in a relatively confined space and allow airborne generated chemistries to concentrate and react in-situ, thereby creating a regeneration effect on the media. In the catalytic filtration section, catalytic media scavenges and converts airborne radicals and ozone to harmless by-products.

US Patent:

20110104582, May 5, 2011

Filed:

Dec 11, 2008

Appl. No.:

12/734636

Inventors:

Gennady Resnick - Prospect Heights IL, US
Ryan J. Balliet - Oakland CA, US
Nikunj Gupta - Sugar Lake TX, US
Cynthia A. York - Cookeville TN, US
Carl A. Reiser - Stonington CT, US
Robert M. Darling - South Windsor CT, US
Jesse M. Marzullo - Meriden CT, US
Jeremy P. Meyers - Austin TX, US

International Classification:

H01M 8/04
H01M 8/24

US Classification:

429450

Abstract:

A fuel cell stack () includes a plurality of fuel cells () each having an electrolyte such as a PEM (), anode and cathode catalyst layers (), anode and cathode gas diffusion layers (), and water transport plates () adjacent the gas diffusion layers. The cathode diffusion layer of cells near the cathode end () of the stack have a high water permeability, such as greater than 3×10g/(Pa s m) at about 80 C. and about 1 atmosphere, whereas the cathode gas diffusion layer in cells near the anode end () have water vapor permeance greater than 3×10g/(Pa s m) at about 80 C. and about 1 atmosphere. In one embodiment, the anode gas diffusion layer of cells near the anode end () of the stack have a higher liquid water permeability than the anode gas diffusion layer in cells near the cathode end; a second embodiment reverses that relationship.

US Patent:

20120003560, Jan 5, 2012

Filed:

Mar 18, 2009

Appl. No.:

13/256290

Inventors:

Jeremy P. Meyers - Austin TX, US
Michael L. Perry - Glastonbury CT, US
Carl A. Reiser - Stonington CT, US
Ned E. Cipollini - Enfield CT, US
Wayde R. Schmidt - Pomfret Center CT, US
Gopal R. Krishnan - Wethersfield CT, US
John A. Trela - Seattle WA, US
Robert M. Darling - South Windsor CT, US

International Classification:

H01M 8/04
H01M 2/08

US Classification:

429450, 429514, 429509, 429508

Abstract:

A fuel cell includes an electrode assembly having an electrolyte between a cathode catalyst and an anode catalyst, and a flow field plate having a channel for delivering a reactant gas to the electrode assembly. The flow field plate includes a channel having a channel inlet. A porous diffusion layer is located between the electrode assembly and the flow field plate. The porous diffusion layer includes a first region near the channel inlet and a second region downstream from the first region relative to the channel inlet. The first region includes a filler material that partially blocks pores of the first region such that the first region has a first porosity and the second region has a second porosity that is greater than the first porosity.