Jeffrey David Chambers

US Patent:

7201816, Apr 10, 2007

Filed:

Dec 16, 2002

Appl. No.:

10/320086

Inventors:

Dimitri P. Zafiroglu - Wilmington DE, US
Jeffrey Allen Chambers - Hockessin DE, US
Geoffrey David Hietpas - Newark DE, US

Assignee:

Invista North America S.A.R.L. - Wilmington DE

International Classification:

B32B 31/00

US Classification:

156 84, 156160, 156161, 156164, 156229

Abstract:

A multi-layer composite sheet comprising a shrinkable layer intermittently bonded a to a gatherable layer with the bonds separated by a specified distance and wherein the shrinkable layer can shrink and at the same time gather the gatherable layer between the bonds. A process for preparing multi-layer composite sheets by intermittently bonding a shrinkable layer to a gatherable layer with the bonds separated by a specified distance and causing the shrinkable layer to shrink while at the same time gathering the gatherable layer between the bonds. Preferably, the shrinkable layer comprises an array of fibers or nonwoven web comprising fibers having latent spiral crimp.

US Patent:

7588818, Sep 15, 2009

Filed:

Sep 16, 2005

Appl. No.:

11/228128

Inventors:

Dimitri P. Zafiroglu - Wilmington DE, US
Jeffrey Allen Chambers - Hockessin DE, US
Geoffrey David Hietpas - Newark DE, US

Assignee:

INVISTA North America S.a r.l. - Wilmington DE

International Classification:

B32B 7/02
B32B 27/32
B32B 5/12

US Classification:

428212, 428220, 428152, 428198, 4282957, 4282971, 4282974

Abstract:

A multi-layer composite sheet comprising a shrinkable layer intermittently bonded a to a gatherable layer with the bonds separated by a specified distance and wherein the shrinkable layer can shrink and at the same time gather the gatherable layer between the bonds. A process for preparing multi-layer composite sheets by intermittently bonding a shrinkable layer to a gatherable layer with the bonds separated by a specified distance and causing the shrinkable layer to shrink while at the same time gathering the gatherable layer between the bonds. Preferably, the shrinkable layer comprises an array of fibers or nonwoven web comprising fibers having latent spiral crimp.

US Patent:

59023635, May 11, 1999

Filed:

Jul 18, 1997

Appl. No.:

8/896372

Inventors:

Elizabeth Sokolinski Connolly - Wilmington DE
George Daniel Forsythe - Landenberg PA
Daniel Matthew Domanski - New Castle DE
Jeffrey Allen Chambers - Hockessin DE
Govindasamy Paramasivam Rajendran - Boothwyn PA

Assignee:

AlliedSignal Composites Inc. - Newark DE

International Classification:

B01D39/20

US Classification:

55487

Abstract:

A ceramic hot-gas candle filter having a porous support of filament-wound oxide ceramic yarn at least partially surrounded by a porous refractory oxide ceramic matrix, and a membrane layer on at least one surface thereof. The membrane layer may be on the outer surface, the inner surface, or both the outer and inner surface of the porous support. The membrane layer may be formed of an ordered arrangement of circularly wound, continuous filament oxide ceramic yarn, a ceramic filler material which is less permeable than the filament-wound support structure, or some combination of continuous filament and filler material. A particularly effective membrane layer features circularly wound filament with gaps intentionally placed between adjacent windings, and a filler material of ceramic particulates uniformly distributed throughout the gap region. The filter can withstand thermal cycling during backpulse cleaning and is resistant to chemical degradation at high temperatures.

US Patent:

61800546, Jan 30, 2001

Filed:

Feb 2, 1999

Appl. No.:

9/243304

Inventors:

Elizabeth Sokolinski Connolly - Wilmington DE
George Daniel Forsythe - Landenberg PA
Daniel Matthew Domanski - New Castle DE
Jeffrey Allen Chambers - Hockessin DE
Govindasamy Paramasivam Rajendran - Boothwyn PA

Assignee:

AlliedSignal Composites Inc. - Newark DE

International Classification:

C04B 3332
B01D 2400
B01D 3906

US Classification:

264628

Abstract:

A ceramic hot-gas candle filter having a porous support of filament-wound oxide ceramic yarn at least partially surrounded by a porous refractory oxide ceramic matrix, and a membrane layer on at least one surface thereof. The membrane layer may be on the outer surface, the inner surface, or both the outer and inner surface of the porous support. The membrane layer may be formed of an ordered arrangement of circularly wound, continuous filament oxide ceramic yarn, a ceramic filler material which is less permeable than the filament-wound support structure, or some combination of continuous filament and filler material. A particularly effective membrane layer features circularly wound filament with gaps intentionally placed between adjacent windings, and a filler material of ceramic particulates uniformly distributed throughout the gap region. The filter can withstand thermal cycling during backpulse cleaning and is resistant to chemical degradation at high temperatures.