Weiguo Miao

7112050, Sep 26, 2006

Jun 26, 2003

10/606508

James J. Bernas - Horseheads NY, US
Thomas W. Brew - Corning NY, US
Rodney I. Frost - Corning NY, US
Mark L. Humphrey - Corning NY, US
Weiguo Miao - Corning NY, US
Kenneth R. Miller - Addison NY, US
Yawei Sun - Horseheads NY, US
Sujanto Widjaja - Corning NY, US

Corning Incorporated - Corning NY

B29C 47/12

425190, 425464, 425467

A honeycomb substrate includes an inner body having an inner skin and an array of inner webs defining an array of inner cells within the inner skin. The honeycomb substrate further includes an outer body having an outer skin formed concentric with the inner skin and an array of outer webs defining an array of triangle cells between the inner skin and the outer skin. The triangle cells are oriented along a radial direction with respect to a center of the inner body. An extrusion assembly for forming the honeycomb substrate includes an inner cell forming die, an outer cell forming die, and a skin forming mask, all mounted coaxially. An outer skin slot formed between the outer cell forming die and the skin forming mask is in communication with feedholes in the inner cell forming die through an opening in the outer cell forming die.

7485170, Feb 3, 2009

Nov 30, 2005

11/291831

Douglas Munroe Beall - Painted Post NY, US
Thomas Richard Chapman - Painted Post NY, US
Weiguo Miao - Big Flats NY, US
Jianguo Wang - Horseheads NY, US

Corning Incorporated - Corning NY

B01D 46/00
F01N 3/022

55523, 552822, 552823, 553853, 55524, 55DIG 5, 55DIG 10, 55DIG 30, 60299, 60311, 422180, 264628, 264630, 264631, 264DIG 48, 428116

Disclosed are ceramic honeycomb articles, which are composed predominately of a crystalline phase cordierite composition. The ceramic honeycomb articles possess a microstructure characterized by a unique combination of relatively high porosity between 42% and 56%, and relatively narrow pore size distribution wherein less than 15% of the total porosity has a pore diameter less than 10 μm, less than 20% of the total porosity has a pore diameter greater than 30 μm, and d≦1. 50 wherein d=(d−d)/d. The articles exhibits high thermal durability and high filtration efficiency coupled with low pressure drop across the filter. Such ceramic articles are particularly well suited for filtration applications, such as diesel exhaust filters or DPFs. Also disclosed is a method for manufacturing the ceramic article wherein the pore former is preferably potato starch having a median particle diameter greater than 40 μm.

7575618, Aug 18, 2009

Mar 30, 2006

11/394594

Weiguo Miao - Corning NY, US
Jianguo Wang - Horseheads NY, US

Corning Incorporated - Corning NY

B01D 46/00
B01D 39/20

55523, 552823, 553853, 55524, 55DIG 5, 55DIG 10, 55DIG 30, 60299, 60611, 95273, 422180, 428118, 264 41, 264 44, 264628, 264630, 264631, 264DIG 48

Porous ceramic articles such as ceramic filters are provided from ceramic extrusion batches comprising mixtures of oxides and oxide precursors with a reactive binder system, the binder system comprising a cellulosic temporary binder and two or more reactive binder components such as colloidal alumina, carbohydrate pore formers, reactive high charge density polymers, and chemical cross-linkers, the reactive binder system promoting cross-linking or networking reactions in the batch that enhance the fine pore structures of the porous ceramic products.

7575794, Aug 18, 2009

Aug 29, 2007

11/897141

Margaret Kathleen Faber - Corning NY, US
Weiguo Miao - Horseheads NY, US
Tinghong Tao - Big Flats NY, US

Corning Incorporated - Corning NY

B32B 3/12
B01D 39/06
C03C 10/08

428116, 55523, 501 9

Porous, non-microcracked cordierite ceramic bodies having high strength, high strain tolerance, and high thermal shock resistance are produced from cordierite powder batch mixtures of controlled powder particle size fired according to a schedule that prevents objectionable cordierite grain growth, maintaining a small cordierite crystalline domain size in order to minimize or prevent microcracking in the product.

7601194, Oct 13, 2009

Mar 24, 2005

11/089642

Douglas M. Beall - Painted Post NY, US
Rodney I. Frost - Corning NY, US
Weiguo Miao - Corning NY, US

Corning Incorporated - Corning NY

B01D 46/00
F01N 3/022

55523, 553853, 55DIG 30, 60311, 428116

A honeycomb filter includes an array of interconnecting porous walls which define an array of first channels and second channels. The first channels are bordered on their sides by the second channels and have a larger hydraulic diameter than the second channels. The first channels have a square cross-section, with corners of the first channels having a shape, such as a bevel or fillet, such that the thickness, t, of the porous walls adjoining the corners of the first channels is comparable to the thickness, t, of the porous walls adjoining edges of the first and second channels. Embodiments having a corner fillet with a radius, R, are also disclosed. Embodiments wherein 0. 30 t≦R≦1. 0 texhibit combinations of low wall pressure drop and low thermal stress.

7648548, Jan 19, 2010

May 10, 2006

11/432038

Weiguo Miao - Corning NY, US
Steven Bolaji Ogunwumi - Painted Post NY, US
Paul John Shustack - Elmira NY, US
Jianguo Wang - Horseheads NY, US

Corning Incorporated - Corning NY

B01D 46/00
F01N 3/022
B01D 39/20

55523, 552823, 553853, 55524, 55DIG 5, 55DIG 10, 55DIG 30, 60297, 60299, 60311, 422177, 422180, 264 41, 264 44, 264628, 264631, 264DIG 48, 428116, 95273

Disclosed are ceramic articles, which in one aspect are composed predominately of a cordierite having a composition close to that of MgAlSiO. The ceramic articles possess a microstructure characterized by a unique combination of relatively high porosity and relatively narrow pore size distribution, both as measured by mercury porosimetry, that render the ceramic structure useful for ceramic filter applications requiring high thermal durability and high filtration efficiency coupled with low pressure drop along the length of the filter. Such ceramic bodies are particularly well suited for filtration applications, such as diesel exhaust filters or DPFs. Also disclosed are methods for the manufacture of the ceramic articles described herein.

7674513, Mar 9, 2010

Oct 6, 2006

11/544265

Izhar Zahoor Ahmed - Painted Post NY, US
Weiguo Miao - Corning NY, US

Corning Incorporated - Corning NY

B32B 3/12

428116, 428117, 50252718

A ceramic honeycomb structure includes a honeycomb body having an array of interconnecting webs bounded by a skin. The interconnecting webs define an array of longitudinal cells having diagonal corners. Fillets are formed only in diagonally opposed corners traversed by lines perpendicular and/or substantially perpendicular to the skin.

7744670, Jun 29, 2010

Nov 30, 2006

11/606797

Weiguo Miao - Big Flats NY, US
Paul John Shustack - Elmira NY, US
Jennifer Lynn Skolny - Corning NY, US
Jianguo Wang - Horseheads NY, US
Yuming Xie - Horseheads NY, US

Corning Incorporated - Corning NY

B01D 39/06
B01D 24/00
B01D 39/14
B01D 50/00
F01N 3/00
F01N 3/10
F01N 3/08

55523, 55522, 55524, 60297, 502303, 422172, 422173, 422174, 422175, 422176, 422177, 422178, 422179, 422180

A porous ceramic honeycomb filter manufactured from an oxide-based ceramic material having a pore size distribution with d≧7. 0 microns. Preferably, the oxide-based material is cordierite or aluminum titanate. Alternatively, the filter contains a cordierite-containing ceramic body with a narrow pore size distribution with d≦1. 00, wherein d=(d−d)/d. Also disclosed is a batch mixture, method and honeycomb green body made from mixture of inorganic source materials selected from the group of magnesia sources, alumina sources, and silica sources, and a pore former having a narrow particle size distribution with d≦0. 90, wherein d={(dp−dp)/dp}. The pore former is preferably selected from a group consisting of canna starch, sago palm starch, green mung bean starch, and single-mode potato starch.