Hui Xu

US Patent:

6780202, Aug 24, 2004

Filed:

Nov 4, 2002

Appl. No.:

10/287135

Inventors:

Caroline Shi - Allston MA
Sonja Salmon - Raleigh NC
Hui Xu - Wake Forest NC

Assignee:

Novoymes North America, Inc. - Franklinton NC

International Classification:

D06P 116

US Classification:

8137, 8401, 8921, 8922, 8924, 8926, 8927, 8529, 435236

Abstract:

The present invention relates to methods and compositions for removing excess dye from dyed and/or printed materials, such as, textile materials dyed with disperse dyes, by treating a dyed or printed material with an esterase. The improvements resulting form the present invention include, for example, improvements in the washfastness, the wetfastness, the crockfastness, sublimation, and/or the quality of the color, such as, brightness, of dyed and/or printed materials. The present invention also relates to methods for printing or dyeing a material by dyeing or printing the material with a combination of a dye that is affected by esterase treatment and a dye that is not affected by esterase treatment, and after dyeing or printing the material, discharging residual dye by treating the material with an esterase.

US Patent:

6890361, May 10, 2005

Filed:

May 20, 2004

Appl. No.:

10/851843

Inventors:

Caroline Shi - Allston MA, US
Sonja Salmon - Raleigh NC, US
Hui Xu - Wake Forest NC, US

Assignee:

Novozymes North America, Inc. - Franklinton NC

International Classification:

D06P001/12
D06P005/00

US Classification:

8401, 8485, 8137, 8921, 8922, 8924, 8926, 8927

Abstract:

The present invention relates to methods and compositions for removing excess dye from dyed and/or printed materials, such as, textile materials dyed with disperse dyes, by treating a dyed or printed material with an esterase. The improvements resulting form the present invention include, for example, improvements in the washfastness, the wetfastness, the crockfastness, sublimation, and/or the quality of the color, such as, brightness, of dyed and/or printed materials. The present invention also relates to methods for printing or dyeing a material by dyeing or printing the material with a combination of a dye that is affected by esterase treatment and a dye that is not affected by esterase treatment, and after dyeing or printing the material, discharging residual dye by treating the material with an esterase.

US Patent:

20220416260, Dec 29, 2022

Filed:

Jun 24, 2022

Appl. No.:

17/849275

Inventors:

- Buffalo NY, US
- Newton MA, US
Zhi Qiao - Bryan TX, US
Hui Xu - Acton MA, US
Shuo Ding - Boston MA, US

International Classification:

H01M 4/92
H01M 4/88
H01M 8/1004

Abstract:

Hybrid catalyst suitable for use in a proton exchange membrane fuel cell and method of preparing same. In one embodiment, the hybrid catalyst is iron-free and includes an Mn—N—C support and platinum-containing nanoparticles that are dispersed on the Mn—N—C support. The Mn—N—C support preferably comprises atomically dispersed and nitrogen coordinated MnNmoieties and has a particle size of about 30 to 200 nm. The platinum-containing nanoparticles preferably have a particle size ranging from about 2 to 8 nm and are made of platinum or a platinum-cobalt intermetallic alloy, such as a cubic L1PtCo alloy or a tetragonal L1PtCo alloy. The hybrid catalyst may be made by combining a quantity of a hexachloroplatinic acid solution with a quantity of an Mn—N—C support, sonicating the mixture in an ice bath, freeze-drying the sonicated product, calcinating the freeze-dried product under a forming gas, and heating the calcinated product.

US Patent:

20220367895, Nov 17, 2022

Filed:

May 12, 2022

Appl. No.:

17/743303

Inventors:

- Newton MA, US
Hui Xu - Acton MA, US

International Classification:

H01M 8/1004
H01M 8/1041

Abstract:

Membrane electrode assembly and method for fabricating the same. In one embodiment, the method may involve providing an anion exchange membrane and then applying catalyst coatings to opposing surfaces of the anion exchange membrane, whereby a membrane electrode assembly may be formed. Next, the membrane electrode assembly may be subjected to a two-part treatment process. In a first part of the process, the membrane electrode assembly may be swelled, at room temperature, by exposure to an aqueous ethanol solution vapor while being retained under tension in a frame. The aqueous ethanol solution vapor may be, for example, 80:20 by volume ethanol and water. In a second part of the process, the swollen membrane electrode assembly may be removed from the frame and then pressed, at room temperature, between two plates. A layer of rubber and a layer polytetrafluoroethylene may be placed between each plate and the swollen membrane electrolyte assembly.