Patents by Inventor Weiguo Miao
Weiguo Miao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8673207Abstract: A porous ceramic honeycomb article comprising a honeycomb body formed from cordierite ceramic, wherein the honeycomb body has a porosity P %?55% and a cell channel density CD?150 cpsi. The porous channel walls have a wall thickness T, wherein (11+(300?CD)*0.03)?T?(8+(300?CD)*0.02), a median pore size ?20 microns, and a pore size distribution with a d-factor of ?0.35. The honeycomb body has a specific pore volume of VP?0.22. The porous ceramic honeycomb article exhibits a coated pressure drop increase of ?8 kPa at a flow rate of 26.5 cubic feet per minute when coated with 100 g/L of a washcoat catalyst and loaded with 5 g/L of soot.Type: GrantFiled: November 14, 2013Date of Patent: March 18, 2014Assignee: Corning IncorporatedInventors: Thorsten Rolf Boger, Weiguo Miao, Zhen Song, Jianguo Wang
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Publication number: 20140070441Abstract: A porous ceramic honeycomb article comprising a honeycomb body formed from cordierite ceramic, wherein the honeycomb body has a porosity P %?55% and a cell channel density CD?150 cpsi. The porous channel walls have a wall thickness T, wherein (11+(300?CD)*0.03)?T?(8+(300?CD)*0.02), a median pore size?20 microns, and a pore size distribution with a d-factor of ?0.35. The honeycomb body has a specific pore volume of VP?0.22. The porous ceramic honeycomb article exhibits a coated pressure drop increase of ?8 kPa at a flow rate of 26.5 cubic feet per minute when coated with 100 g/L of a washcoat catalyst and loaded with 5 g/L of soot.Type: ApplicationFiled: November 14, 2013Publication date: March 13, 2014Applicant: Corning IncorporatedInventors: Thorsten Rolf Boger, Weiguo Miao, Zhen Song, Jianguo Wang
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Publication number: 20140060116Abstract: A downstream roll for glass manufacture comprises at least one millboard piece. At least a portion of an outer peripheral surface of the downstream roll comprises infiltrated ceramic particles. The infiltrated ceramic particles are infiltrated to a depth of about 1 mm to about 10 mm. Further examples of the disclosure include methods for manufacturing a glass ribbon and a downstream roll for glass manufacture.Type: ApplicationFiled: September 6, 2012Publication date: March 6, 2014Inventors: Ralph Alfred Langensiepen, Yanxia Ann Lu, Weiguo Miao
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Patent number: 8609032Abstract: A porous ceramic honeycomb article comprising a honeycomb body formed from cordierite ceramic, wherein the honeycomb body has a porosity P %?55% and a cell channel density CD ?150 cpsi. The porous channel walls have a wall thickness T, wherein (11+(300?CD)*0.03)?T?(8+(300?CD)*0.02), a median pore size ?20 microns, and a pore size distribution with a d-factor of ?0.35. The honeycomb body has a specific pore volume of VP?0.22. The porous ceramic honeycomb article exhibits a coated pressure drop increase of ?8 kPa at a flow rate of 26.5 cubic feet per minute when coated with 100 g/L of a washcoat catalyst and loaded with 5 g/L of soot.Type: GrantFiled: November 29, 2010Date of Patent: December 17, 2013Assignee: Corning IncorporatedInventors: Thorsten Rolf Boger, Weiguo Miao, Zhen Song, Jianguo Wang
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Patent number: 8454886Abstract: A method for manufacturing an inorganic honeycomb structure that resists water damage after drying comprises compounding a base batch mixture including inorganic powders, a batch cross-link agent, an aqueous vehicle, and a cross-linkable batch constituent, and forming the batch mixture into a honeycomb core or skin component while reacting the cross-link agent with cross-linkable batch constituent.Type: GrantFiled: November 29, 2006Date of Patent: June 4, 2013Assignee: Corning IncorporatedInventors: Margaret Kathleen Faber, Robert Gordon Lawrence, Weiguo Miao, Jianguo Wang
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Publication number: 20120272823Abstract: An article comprising a plurality of intersecting walls having outer surfaces that define a plurality of cells extending from one end to a second end, wherein the walls forming each cell in a first subset of cells are covered by a barrier layer to form a plurality of heat exchange flow channels, and wherein the walls forming each cell in a second subset of cells different from the first subset of cells, comprise a CO2 sorbent and form reaction flow channels. Heat exchange flow channels allow quick and uniform heating and cooling of the sorbent body. The article may be useful, for example, for removing CO2 from a gas stream.Type: ApplicationFiled: April 29, 2011Publication date: November 1, 2012Inventors: Amit Halder, Dayue David Jiang, Weiguo Miao, Steven Bolaji Ogunwumi, Zhen Song
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Publication number: 20120134891Abstract: A porous ceramic honeycomb article comprising a honeycomb body formed from cordierite ceramic, wherein the honeycomb body has a porosity P %?55% and a cell channel density CD ?150 cpsi. The porous channel walls have a wall thickness T, wherein (11+(300?CD)*0.03)?T?(8+(300?CD)*0.02), a median pore size ?20 microns, and a pore size distribution with a d-factor of ?0.35. The honeycomb body has a specific pore volume of VP?0.22. The porous ceramic honeycomb article exhibits a coated pressure drop increase of ?8 kPa at a flow rate of 26.5 cubic feet per minute when coated with 100 g/L of a washcoat catalyst and loaded with 5 g/L of soot.Type: ApplicationFiled: November 29, 2010Publication date: May 31, 2012Inventors: Thorsten Rolf Boger, Weiguo Miao, Zhen Song, Jianguo Wang
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Patent number: 8097203Abstract: The invention describes a high porosity ceramic article and method of manufacturing the same and intermediate dried honeycomb green body articles. The article may have a total porosity of at least about fifty-five percent, above sixty percent, or even above sixty-five percent. The method of manufacture includes mixing a ceramic-forming powder, an organic pore former, water, and a crosslinker. Drying causes a condensation reaction between the pore former and the crosslinker thereby forming a network within the green body that strengthens the green body and reduces cracking. The pore former may include starch or an activated cellulose compounds. Secondary pore forming agents, such as graphite may also be included.Type: GrantFiled: January 29, 2007Date of Patent: January 17, 2012Assignee: Corning IncorporatedInventors: Weiguo Miao, Steven Bolaji Ogunwumi, Jianguo Wang
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Publication number: 20110291313Abstract: Processes for manufacturing porous ceramic honeycomb articles are disclosed. The processes include mixing a batch of inorganic components with processing aids to form a plasticized batch. The batch of inorganic components include talc having dpt50?10 ?m, a silica-forming source having dps50?20 ?m, an alumina-forming source having a median particle diameter dpa50 of less than or equal to 10.0 ?m, and a pore former having dpp50?20 ?m. The plasticized batch is formed into a green honeycomb article and fired under conditions effective to form a porous ceramic honeycomb article comprising a cordierite crystal phase and having a microcrack parameter (Nb3) of from about 0.05 to about 0.25. After firing, the green honeycomb article the porous ceramic honeycomb article is exposed to a microcracking condition, which increases the microcrack parameter (Nb3) by at least 20%.Type: ApplicationFiled: May 28, 2010Publication date: December 1, 2011Inventors: Weiguo Miao, Jianguo Wang
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Publication number: 20110293883Abstract: Porous ceramic honeycomb articles for use as particulate filters and processes for making the same are described herein. The porous ceramic honeycomb articles include a fired cordierite body. The fired cordierite body has a microcrack parameter (Nb3) of about 0.05 to about 0.25 prior to exposure to a microcracking condition. After exposure to the microcracking condition, the fired cordierite body has a microcrack parameter (Nb3) at least 20% greater than the microcrack parameter prior to exposure to the microcracking condition. The fired cordierite body has a coefficient of thermal expansion (CTE) of about 7.0×10?7/° C. to about 15.0×10?7/° C. over from about 25° C. to about 800° C. prior to exposure to the microcracking condition and a coefficient of thermal expansion of about 1.0×10?7/° C. to about 10.0×10?7/° C. over from about 25° C. to about 800° C. after exposure to the microcracking condition. The microcrack parameter may include a thermal cycle or a chemical treatment.Type: ApplicationFiled: May 28, 2010Publication date: December 1, 2011Inventors: Weiguo Miao, Jianguo Wang
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Patent number: 8017067Abstract: A method for manufacturing a honeycomb structure comprises providing an aqueous ceramic solution, providing a batch cross-link agent, mixing the agent with the solution, extruding the aqueous ceramic solution containing the cross-link agent into a honeycomb structure, and drying the honeycomb structure via a single drying step thereby forming a hardened, substantially water resistant, honeycomb structure. The method may further comprise addition of a ceramic surfactant to the aqueous ceramic solution, as well as plugging channels within the honeycomb structure with a plugging material comprising an aqueous ceramic solution that includes batch cross-link agents and ceramic surfactants therein.Type: GrantFiled: August 29, 2007Date of Patent: September 13, 2011Assignee: Corning IncorporatedInventors: Martha Blanche Custer, Margaret Kathleen Faber, Weiguo Miao, Jianguo Wang
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Patent number: 7981188Abstract: A porous ceramic honeycomb filter manufactured from an oxide-based ceramic material having a pore size distribution with d1?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 db?1.00, wherein db=(d90?d10)/d50. 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 dps?0.90, wherein dps={(dp90?dp10)/dp50}. 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.Type: GrantFiled: May 19, 2010Date of Patent: July 19, 2011Assignee: Corning IncorporatedInventors: Weiguo Miao, Paul John Shustack, Jennifer Lynn Skolny, Jianguo Wang, Yuming Xie
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Publication number: 20100234206Abstract: A porous ceramic honeycomb filter manufactured from an oxide-based ceramic material having a pore size distribution with d1?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 db?1.00, wherein db=(d90?d10)/d50. 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 dps?0.90, wherein dps={(dp90?dp10)/dp50}. 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.Type: ApplicationFiled: May 19, 2010Publication date: September 16, 2010Inventors: Weiguo Miao, Paul John Shustack, Jennifer Lynn Skolny, Jianguo Wang, Yuming Xie
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Patent number: 7744670Abstract: A porous ceramic honeycomb filter manufactured from an oxide-based ceramic material having a pore size distribution with d1?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 db?1.00, wherein db=(d90?d10)/d50. 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 dps?0.90, wherein dps={(dp90?dp10)/dp50}. 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.Type: GrantFiled: November 30, 2006Date of Patent: June 29, 2010Assignee: Corning IncorporatedInventors: Weiguo Miao, Paul John Shustack, Jennifer Lynn Skolny, Jianguo Wang, Yuming Xie
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Patent number: 7674513Abstract: 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.Type: GrantFiled: October 6, 2006Date of Patent: March 9, 2010Assignee: Corning IncorporatedInventors: Izhar Zahoor Ahmed, Weiguo Miao
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Patent number: 7648548Abstract: Disclosed are ceramic articles, which in one aspect are composed predominately of a cordierite having a composition close to that of Mg2Al4Si5O18. 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.Type: GrantFiled: May 10, 2006Date of Patent: January 19, 2010Assignee: Corning IncorporatedInventors: Weiguo Miao, Steven Bolaji Ogunwumi, Paul John Shustack, Jianguo Wang
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Publication number: 20100009024Abstract: 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, t3, of the porous walls adjoining the corners of the first channels is comparable to the thickness, t4, of the porous walls adjoining edges of the first and second channels. Embodiments having a corner fillet with a radius, Rc, are also disclosed. Embodiments wherein 0.30 t4?Rc?1.0 t4 exhibit combinations of low wall pressure drop and low thermal stress.Type: ApplicationFiled: September 14, 2009Publication date: January 14, 2010Inventors: Douglas M. Beall, Rodney I. Frost, Weiguo Miao
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Patent number: 7601194Abstract: 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, t3, of the porous walls adjoining the corners of the first channels is comparable to the thickness, t4, of the porous walls adjoining edges of the first and second channels. Embodiments having a corner fillet with a radius, Rc, are also disclosed. Embodiments wherein 0.30 t4?Rc?1.0 t4 exhibit combinations of low wall pressure drop and low thermal stress.Type: GrantFiled: March 24, 2005Date of Patent: October 13, 2009Assignee: Corning IncorporatedInventors: Douglas M. Beall, Rodney I. Frost, Weiguo Miao
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Patent number: 7575794Abstract: 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.Type: GrantFiled: August 29, 2007Date of Patent: August 18, 2009Assignee: Corning IncorporatedInventors: Margaret Kathleen Faber, Weiguo Miao, Tinghong Tao
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Patent number: 7575618Abstract: 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.Type: GrantFiled: March 30, 2006Date of Patent: August 18, 2009Assignee: Corning IncorporatedInventors: Weiguo Miao, Jianguo Wang