Chiu Cheong Chan

US Patent:

6653363, Nov 25, 2003

Filed:

Dec 4, 2002

Appl. No.:

10/309799

Inventors:

Chiu Y. Chan - Wilmington DE
Beat Niederoest - Marlton NJ

Assignee:

Foamex, L.P. - Linwood PA

International Classification:

C08G 1828

US Classification:

521174, 521126, 521128, 521130, 521137, 521170

Abstract:

Foaming a polyurethane foam at above atmospheric pressure conditions using a mixture of polyisocyanate and a specific mixture of low molecular weight (high OH number) polyether and graft polyols produces viscoelastic foams with high firmness, low energy losses and high temperature sensitivity such that firmness is reduced by at least 25% when the foam is heated from room temperature (e. g. , about 70Â F. (21Â C. )) to 100Â F. (38Â C. ). The foam-forming ingredients are mixed together and foamed at controlled pressures in the range 1. 05 to 1. 5 bar (absolute), preferably 1. 1 to 1. 3 bar (absolute).

US Patent:

7687139, Mar 30, 2010

Filed:

Feb 26, 2008

Appl. No.:

12/037196

Inventors:

Chiu Y. Chan - Wilmington DE, US
Sharon A. Free - Wallingford PA, US
Joshua D. Land - Media PA, US
Marc J. Albero - Springfield PA, US
Jagdish Patel - Sewell NJ, US

Assignee:

Foamex Innovations Operating Company - Media PA

International Classification:

B32B 3/00
B32B 3/26

US Classification:

4283166

Abstract:

A hydrophilic ester polyurethane foam is flame laminated to a substrate using a thin sacrificial layer, preferably a sacrificial foam layer. The sacrificial layer in the resulting laminate structure has a thickness of 1. 5 mm or less, and preferably is substantially burnt away. The resulting laminate exhibits good bond strength along its length and width without loss of liquid wicking and absorptive properties.

US Patent:

20060008633, Jan 12, 2006

Filed:

Jul 6, 2004

Appl. No.:

10/885481

Inventors:

Chiu Chan - Wilmington DE, US
Sharon Free - Wallingford PA, US
Joshua Land - Media PA, US
Marc Albero - Springfield PA, US
Jagdish Patel - Sewell NJ, US
William Burke - Secane PA, US

International Classification:

B32B 3/26

US Classification:

428304400

Abstract:

A hydrophilic ester polyurethane foam is flame laminated to a substrate using a thin sacrificial layer, preferably a sacrificial foam layer. The sacrificial layer in the resulting laminate structure has a thickness of 1.5 mm or less, and preferably is substantially burnt away. The resulting laminate exhibits good bond strength along its length and width without loss of liquid wicking and absorptive properties.

US Patent:

20060029788, Feb 9, 2006

Filed:

Aug 4, 2004

Appl. No.:

10/710811

Inventors:

David Lovell - Eddystone PA, US
Chiu Chan - Eddystone PA, US
Scott Diaczun - Linwood PA, US

Assignee:

FOAMEX L.P. - Linwood PA

International Classification:

C08G 18/00
B32B 3/26

US Classification:

428304400, 521155000

Abstract:

Polyurethane foams formed under vacuum (below atmospheric pressure) conditions using primarily graft polyether polyols reacted with primarily toluene diisocyanate have lower densities (up to 1.3 lb/ft), lower hardness (IFD=up to 50 lbs), and exhibit superb thermoformability and fire retardance while retaining good sound insulating characteristics. The foam-forming ingredients are mixed together and foamed under controlled pressures in the range 0.5 to 0.95 bar (absolute). Such foams taken alone, or in combination with a barrier layer to form a laminate, are thermoformed to create a sound insulator for a motor vehicle instrument panel.

US Patent:

20080178738, Jul 31, 2008

Filed:

Jan 29, 2007

Appl. No.:

11/699098

Inventors:

Chiu Y. Chan - Wilmington DE, US
Xingwu Wang - Chapel Hill NC, US

Assignee:

FOAMEX L.P. - Linwood PA

International Classification:

B01J 21/06
B01D 15/00
B01D 53/14

US Classification:

95141, 210679, 502350, 95 90

Abstract:

Filter and/or absorbent materials comprising an open cell foam having a surface, wherein the surface of the open cell foam is at least partially coated with a layer comprising photocatalytic titanium dioxide; methods for making such materials comprising: (a) providing a mixture comprising photocatalytic titanium dioxide in a binder; (b) immersing an open cell foam article in the mixture; (c) removing the article from the mixture and removing excess mixture from the article; and methods of treating gases or liquids by passing the gas or liquid through such a material wherein the material has been activated by UV radiation are described.

US Patent:

20220296001, Sep 22, 2022

Filed:

Feb 25, 2021

Appl. No.:

17/185945

Inventors:

Chiu Chan - Wilmington DE, US

International Classification:

A47C 27/14
A47C 27/15

Abstract:

This invention includes a method to produce a customizable and user-configurable mattress foam core which comprises a plurality of transversely extended foam rods that were cut during the mattress production process. These transversely extended foam rods typically have a cross section of a convex shape, including triangles, squares, rectangles, circles, ovals and hexagons. These transversely extended foam rods can be replaced with foam rods of different firmness, creating more than 10 zones with varying firmness in each zone thus tailoring to the sleeper's needs, adjusting for their differences in height, weight, sleeping position, and comfort preference. Also, these zones together allow the user to configure the mattress for spinal alignment.The transversely extended replacement foam rods typically have cross sections that are substantially the same shape as the pre-cut foam rods, but may also be of different shape. In one embodiment, the transversely extended replacement foam rods comprises foams of two or more different firmness in the transverse direction, thus allowing the mattress to be customized for multiple users with different sleeping needs.