141 |
Resistive type humidity sensor based on porous magnesium ferrite pellet |
US14466723 |
2014-08-22 |
US09671359B2 |
2017-06-06 |
Ravinder Kumar Kotnala; Jyoti Shah; Hari Kishan; Bhikham Singh |
The present invention relates to a process for preparing a humidity sensor based on resistive type porous Magnesium Ferrite (MgFe2O4) pellets and a humidity sensor thereof. More particularly, the present invention includes a synthesis process of preparing 30 to 40% porous MgFe2O4 pellets. The process further includes making Ohmic contacts on the porous MgFe2O4 pellets. The process is very cost effective and optimized to keep the resistance of the porous MgFe2O4 pellets in the range 200-300 MΩ. Further, the response and recovery time of the porous MgFe2O4 pellets to humidity is in the range of few seconds only. Further, the porous MgFe2O4 pellets can be used for humidity sensing for more than 12 months. Due to resistance stability even after long-term exposure in humidity, the porous MgFe2O4 pellets do not require flash heating. Further, the humidity sensor prepared according to the process is highly sensitive towards relative humidity changes as the same is based on the measurement of resistance changes as compared to known humidity sensors which are based on the measurement of capacitance changes. |
142 |
MONOLITH |
US15312727 |
2015-05-14 |
US20170144938A1 |
2017-05-25 |
Kang Li; Zhentao Wu |
The present invention relates to a method of making a monolith having a plurality of channels extending therethrough, the method comprising,providing a suspension of polymer-coated particles in a first solvent;extruding the suspension from a primary orifice, while passing one or more second solvents from a plurality of secondary orifices arranged within the first orifice, into a third solvent, whereby a monolith precursor is formed from the polymer and particles,and sintering the monolith precursor to form a monolith. |
143 |
Proton conducting membranes for hydrogen production and separation |
US14502303 |
2014-09-30 |
US09527044B2 |
2016-12-27 |
Eric D. Wachsman; Hee Sung Yoon; Takkeun Oh; Jianlin Li |
In one embodiment, a membrane of proton-electron conducting ceramics that is useful for the conversion of a hydrocarbon and steam to hydrogen has a porous support coated with a film of a Perovskite-type oxide. By including the Zr and M in the oxide in place of Ce, the stability can be improved while maintaining sufficient hydrogen flux for efficient generation of hydrogen. In this manner, the conversion can be carried out by performing steam methane reforming (SMR) and/or water-gas shift reactions (WGS) at high temperature, where the conversion of CO to CO2 and H2 is driven by the removal of H2 to give high conversions. |
144 |
Method for producing electrode assembly |
US14172006 |
2014-02-04 |
US09350013B2 |
2016-05-24 |
Tsutomu Teraoka; Sukenori Ichikawa; Hirofumi Hokari; Tomofumi Yokoyama |
A method for producing an electrode assembly includes: obtaining a porous active material molded body by molding a constituent material containing a lithium multiple oxide in the form of particles by compression, and then performing a heat treatment at a temperature of 850° C. or higher and lower than the melting point of the used lithium multiple oxide; forming a solid electrolyte layer by applying a liquid containing a constituent material of an inorganic solid electrolyte to the surface of the active material molded body including the inside of each pore of the active material molded body, and then performing a heat treatment; and bonding a current collector to the active material molded body exposed from the solid electrolyte layer. |
145 |
Porous material, manufacturing method of the same, and honeycomb structure |
US14478051 |
2014-09-05 |
US09259721B2 |
2016-02-16 |
Shuichi Ichikawa; Atsushi Mizuno |
There is disclosed a porous material. The porous material contains aggregates, and a bonding material which bonds the aggregates to one another in a state where pores are formed among the aggregates, the bonding material contains crystalline cordierite, the bonding material further contains a rare earth element or a zirconium element, and a ratio of a mass of the bonding material to a total mass of the aggregates and the bonding material is from 12 to 45 mass %. The bonding material preferably contains, in the whole bonding material, 8.0 to 15.0 mass % of MgO, 30.0 to 60.0 mass % of Al2O3, 30.0 to 55.0 mass % of SiO2, and 1.5 to 10.0 mass % of a rare earth oxide or zirconium oxide. |
146 |
POROUS MATERIAL, MANUFACTURING METHOD OF THE SAME, AND HONEYCOMB STRUCTURE |
US14478051 |
2014-09-05 |
US20150093540A1 |
2015-04-02 |
Shuichi ICHIKAWA; Atsushi MIZUNO |
There is disclosed a porous material. The porous material contains aggregates, and a bonding material which bonds the aggregates to one another in a state where pores are formed among the aggregates, the bonding material contains crystalline cordierite, the bonding material further contains a rare earth element or a zirconium element, and a ratio of a mass of the bonding material to a total mass of the aggregates and the bonding material is from 12 to 45 mass %. The bonding material preferably contains, in the whole bonding material, 8.0 to 15.0 mass % of MgO, 30.0 to 60.0 mass % of Al2O3, 30.0 to 55.0 mass % of SiO2, and 1.5 to 10.0 mass % of a rare earth oxide or zirconium oxide. |
147 |
RESISTIVE TYPE HUMIDITY SENSOR BASED ON POROUS MAGNESIUM FERRITE PELLET |
US14466723 |
2014-08-22 |
US20150061706A1 |
2015-03-05 |
Ravinder Kumar KOTNALA; Jyoti SHAH; Hari KISHAN; Bhikham SINGH |
The present invention relates to a process for preparing a humidity sensor based on resistive type porous Magnesium Ferrite (MgFe2O4) pellets and a humidity sensor thereof. More particularly, the present invention includes a synthesis process of preparing 30 to 40% porous MgFe2O4 pellets. The process further includes making Ohmic contacts on the porous MgFe2O4 pellets. The process is very cost effective and optimized to keep the resistance of the porous MgFe2O4 pellets in the range 200-300MΩ. Further, the response and recovery time of the porous MgFe2O4 pellets to humidity is in the range of few seconds only. Further, the porous MgFe2O4 pellets can be used for humidity sensing for more than 12 months. Due to resistance stability even after long-term exposure in humidity, the porous MgFe2O4 pellets do not require flash heating. Further, the humidity sensor prepared according to the process is highly sensitive towards relative humidity changes as the same is based on the measurement of resistance changes as compared to known humidity sensors which are based on the measurement of capacitance changes. |
148 |
PROCESS FOR MAKING A CERAMIC ARTICLE |
US13925899 |
2013-06-25 |
US20140374938A1 |
2014-12-25 |
Tihana FUSS; Laurie San-Miguel; Kevin R. Dickson; Walter T. Stephens |
Disclosed is a process for producing ceramic particles, such as proppants, that have at least 10 percent total porosity. The process includes forming a particle precursor that includes 5 percent to 30 percent of a first ceramic material and at least 40 percent of a second ceramic material. The sintering temperature of the first ceramic material may be lower than the sintering temperature of a second ceramic material. Heating the precursor to a maximum temperature above the sintering temperature of the first material and below the sintering temperature of the second material. Also disclosed is a ceramic article that has a particular combination of chemistry and alumina crystalline phase. |
149 |
CERAMIC FILTER ELEMENT AND METHOD FOR MANUFACTURING A CERAMIC FILTER ELEMENT |
US13898693 |
2013-05-21 |
US20140346104A1 |
2014-11-27 |
Bjarne Ekberg; Olli Högnabba; Rolf Hindstöm; David Eveland; Edward Vroman |
The invention relates to a ceramic filter element (22) for removal of liquid from solids containing material in a capillary suction dryer. The filter element comprises a ceramic substrate covered by a sintered ceramic microporous layer (31). The sintered microporous membrane layer is provided with coarse solid particles (71) of a particle size larger than a pore size of the membrane material layer (31) so as to form a textured surface (50) which prevents a filter cake from sliding off the surface of the filter element prior to the intended cake discharge. |
150 |
POROUS STABILIZED BEDS, METHODS OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME |
US14131357 |
2012-07-06 |
US20140291570A1 |
2014-10-02 |
James F. Klausner; Renwei Mei; Ayyoub Mehdizadeh Momen; Kyle Allen |
Disclosed herein is a method comprising disposing a first particle in a reactor; the first particle being a magnetic particle or a particle that can be influenced by a magnetic field, an electric field or a combination of an electrical field and a magnetic field; fluidizing the first particle in the reactor; applying a uniform magnetic field, a uniform electrical field or a combination of a uniform magnetic field and a uniform electrical field to the reactor; elevating the temperature of the reactor; and fusing the first particles to form a monolithic solid. |
151 |
Proton conducting membranes for hydrogen production and separation |
US12996687 |
2009-06-10 |
US08845768B2 |
2014-09-30 |
Eric D. Wachsman; Heesung Yoon; Takkeun Oh; Jianlin Li |
In one embodiment, a membrane of proton-electron conducting ceramics that is useful for the conversion of a hydrocarbon and steam to hydrogen has a porous support of M′-Sr1-z′M″z′Ce1-x′-y′Zrx′M′″y′O3-δ, Al2O3, mullite, ZrO2, CeO2 or any mixtures thereof where: M′ is Ni, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, W, Zn, Pt, Ru, Rh, Pd, alloys thereof or mixtures thereof; M″ is Ba, Ca, Mg, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, or Yb; M′″ is Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, W, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, or Yb; z′ is 0 to about 0.5; x′ is 0 to about 0.5; y′ is 0 to about 0.5; and x′+y′>0; for example, Ni—SrCe1-x′Zrx′O3-δ, where x′ is about 0.1 to about 0.3. The porous support is coated with a film of a Perovskite-type oxide of the formula SrCe1-x-yZrxMyO3-δ where M is at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, W, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb, x is 0 to about 0.15 and y is about 0.1 to about 0.3. By including the Zr and M in the oxide in place of Ce, the stability can be improved while maintaining sufficient hydrogen flux for efficient generation of hydrogen. In this manner, the conversion can be carried out by performing steam methane reforming (SMR) and/or water-gas shift reactions (WGS) at high temperature, where the conversion of CO to CO2 and H2 is driven by the removal of H2 to give high conversions. Methods of preparing the membrane cells and a system for use of the membrane cells to prepare hydrogen are presented. A method for sequestering CO2 by reaction with methane or other hydrocarbon catalyzed by the novel membrane to form a syngas is also presented. |
152 |
METHOD FOR PRODUCING ELECTRODE ASSEMBLY |
US14172006 |
2014-02-04 |
US20140216631A1 |
2014-08-07 |
Tsutomu TERAOKA; Sukenori ICHIKAWA; Hirofumi HOKARI; Tomofumi YOKOYAMA |
A method for producing an electrode assembly includes: obtaining a porous active material molded body by molding a constituent material containing a lithium multiple oxide in the form of particles by compression, and then performing a heat treatment at a temperature of 850° C. or higher and lower than the melting point of the used lithium multiple oxide; forming a solid electrolyte layer by applying a liquid containing a constituent material of an inorganic solid electrolyte to the surface of the active material molded body including the inside of each pore of the active material molded body, and then performing a heat treatment; and bonding a current collector to the active material molded body exposed from the solid electrolyte layer. |
153 |
Making carbon articles from coated particles |
US13285391 |
2011-10-31 |
US08703027B2 |
2014-04-22 |
Zhenhua Mao |
Methods and compositions relate to manufacturing a carbonaceous article from particles that have pitch coatings. Heating the particles that are formed into a shape of the article carbonizes the pitch coatings. The particles interconnect with one another due to being formed into the shape of the article and are fixed together where the pitch coatings along adjoined ones of the particles contact one another and are carbonized to create the article. |
154 |
METHOD AND APPARATUS FOR SINTERING FLAT CERAMICS |
US13865950 |
2013-04-18 |
US20130277613A1 |
2013-10-24 |
Hiroaki Miyagawa; Guang Pan; Hironaka Fujii; Bin Zhang; Amane Mochizuki; Toshitaka Nakamura |
A method and apparatus for sintering flat ceramics using a mesh or lattice is described herein. |
155 |
THERMAL INSULATOR AND METHOD OF MANUFACTURING THE SAME |
US13993849 |
2011-12-13 |
US20130266801A1 |
2013-10-10 |
Akifumi Sakamoto; Yoshihiko Goto; Yasuo Ito; Ken Maeda |
A thermal insulator with both excellent heat insulation and strength and a method of manufacturing the thermal insulator are provided. A thermal insulator according to the present invention includes metal oxide fine particles with an average particle diameter equal to or smaller than 50 nm and a reinforcing fiber, wherein the thermal insulator has a bridge structure between the metal oxide fine particles which is formed by elution of part of the metal oxide fine particles. A method of manufacturing a thermal insulator according to the present invention includes a curing step of curing a dry pressed compact including metal oxide fine particles with an average particle diameter equal to or smaller than 50 nm and a reinforcing fiber under a pressurized vapor saturated atmosphere at a temperature equal to or higher than 100° C. for four hours and a drying step of drying the cured dry pressed compact. |
156 |
METHOD FOR APPLYING DISCRIMINATING LAYER ONTO POROUS CERAMIC FILTERS VIA GAS-BORNE PREFABRICATED POROUS ASSEMBLIES |
US13813167 |
2011-08-17 |
US20130149440A1 |
2013-06-13 |
Aleksander J. Pyzik; Jun Cai; Andrey N. Soukhojak; Robert A. Newman |
A porous discriminating layer is formed on a ceramic support having at least one porous wall by (a) establishing a flow of a gas stream containing highly porous particles through the support to deposit a layer of the highly porous particles of a ceramic or ceramic precursor onto wall(s) of the support and (b) calcining said deposited layer to form the discriminating layer. This method is an inexpensive and effective route to forming a discriminating layer onto the porous wall. |
157 |
MAKING CARBON ARTICLES FROM COATED PARTICLES |
US13285391 |
2011-10-31 |
US20120119398A1 |
2012-05-17 |
Zhenhua Mao |
Methods and compositions relate to manufacturing a carbonaceous article from particles that have pitch coatings. Heating the particles that are formed into a shape of the article carbonizes the pitch coatings. The particles interconnect with one another due to being formed into the shape of the article and are fixed together where the pitch coatings along adjoined ones of the particles contact one another and are carbonized to create the article. |
158 |
Porous silicon carbide and process for producing the same |
US12206600 |
2008-09-08 |
US08029882B2 |
2011-10-04 |
Yoshio Kikuchi; Shinji Kawasaki |
A silicon carbide porous object includes silicon carbide as an aggregate and metal silicon as a binder, the particles of silicon carbide being bonded to one another so as to have pores thereamong. A method for producing a silicon carbide porous object includes: firing raw materials formed by mixing silicon carbide and metal silicon with metal aluminum or an alloy including metal silicon and metal aluminum in an inert gas atmosphere or a reduced-pressure atmosphere to produce a metal aluminum-metal silicon-silicon carbide porous object; and oxidizing and firing the metal aluminum-metal silicon-silicon carbide porous object in an oxygen atmosphere. |
159 |
Method for producing porous substances |
US11631174 |
2005-07-11 |
US07968490B2 |
2011-06-28 |
Shinichi Takeshima; Akio Koyama |
A porous substance producing method for producing a porous substance; by holding particles for precursors of the porous substance in micelles or inverse micelles kept in a dispersed state in a solvent with a surfactant; by agglomerating the particles of the micelles or inverse micelles to each other; and by baking the agglomerated particles. The method comprises the step of agglomerating the particles of the micelles or inverse micelles to each other by performing a treatment to resolve the dispersed state of the micelles or inverse micelles containing the particles for the precursors, with the surfactant. |
160 |
CMC with multiple matrix phases separated by diffusion barrier |
US11489855 |
2006-07-20 |
US07745022B2 |
2010-06-29 |
Jay E. Lane; Jay A. Morrison; Steven C. Butner; Andrew Szweda |
A ceramic matrix composite (CMC) material (10) with increased interlaminar strength is obtained without a corresponding debit in other mechanical properties. This is achieved by infusing a diffusion barrier layer (20) into an existing porous matrix CMC to coat the exposed first matrix phase (19) and fibers (12), and then densifying the matrix with repeated infiltration cycles of a second matrix phase (22). The diffusion barrier prevents undesirable sintering between the matrix phases and between the second matrix phase and the fibers during subsequent final firing and use of the resulting component (30) in a high temperature environment. |