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Engelhard Corporation Patents
Assignee:
Engelhard Corporation
Address:
Iselin, NJ
No. of patents:
612
Patents:


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Patent Number Title Of Patent Date Issued
4526001 Method and means for controlling air-to-fuel ratio July 2, 1985
A method for controlling the air-to-fuel ratio fed to an engine or other combustion device provides for periodically adjusting the air-to-fuel ratio to stoichiometric or near stoichiometric, within the response range of the conventional exhaust gas sensor employed. This establishes a
4525518 Chalking-resistant, calcined kaolin clay pigment and method of making June 25, 1985
Novel pigments useful as primary extenders in exterior grade latex formulations are described. The pigments are composed of particles of calcined clay, substantially all the particles of which are finer than about 44 microns and having an average particle size, equivalent spherical d
4522894 Fuel cell electric power production June 11, 1985
A process for generating electricity from a fuel cell includes generating a hydrogen-rich gas as the fuel for the fuel cell by treating a hydrocarbon feed, which may be a normally liquid feed, in an autothermal reformer utilizing a first monolithic catalyst zone having palladium and plat
4520422 Ceramic multilayer electrical capacitors May 28, 1985
Ceramic multilayer capacitors are prepared having a reduced metal content in the electrode by the use of finely-divided metal alloy flaked particles.
4520119 Cracking catalyst and manufacture thereof May 28, 1985
By-product fines from the manufacture of zeolitic cracking catalysts from microspheres of calcined clay have heretofore been discarded as a waste stream. These fines, recovered as a moist cake, are slurried in a sodium, silicate solution, spray dried to form microspheres and ion-exchange
4513065 Hydrogen generator April 23, 1985
This disclosure relates to a replaceable cartridge hydrogen generator of the type which relies at least partially on the process of anodic corrosion to produce hydrogen. A drum contains a plurality of the cartridges.
4510369 Rotary furnace April 9, 1985
The rotary furnace has a generally cylindrical rotatable outer member that is driven by a belt and pulley arrangement. An inner member that defines the confines of the heating chamber is freely supported on the outer member to permit free expansion and contraction of the inner member wit
4510265 Platinum/silver vanadate catalyzed diesel exhaust particulate filter April 9, 1985
A self-cleaning diesel exhaust particulate filter is disclosed wherein burn-off of collected particulate matter is accomplished at normal exhaust gas temperatures, the filter being provided with a catalyst mixture of a platinum group metal and silver vanadate, the presence of which lower
4505992 Integral gas seal for fuel cell gas distribution assemblies and method of fabrication March 19, 1985
A porous gas distribution plate assembly for a fuel cell, such as a bipolar assembly, includes an inner impervious region wherein the bipolar assembly has good surface porosity but no through-plane porosity and wherein electrical conductivity through the impervious region is maintained.
4505928 Pharmaceutical composition containing cis-platinum (II) amine lactate and a method of using same March 19, 1985
A pharmaceutical composition having as the active ingredient a cis-platinum(II) amine lactate complex in which said amine is derived from ammonia or a monodentate or bidentrate amine ligand such as an alkylamine or alkylene diamine. Said compositions may be administered orally or par
4502444 Air-fuel ratio controller March 5, 1985
A system for the control of the air-fuel ratio in an internal combustion engine incorporates an electronic control unit, a sensor of exhaust emissions and a valve for metering fuel with air to control the air-fuel ratio. The electronic control unit provides for the comparison of succ
4500465 Solubilized platinum (II) complexes February 19, 1985
There are described platinum-polyhydroxylated amine compounds which exhibit anti-tumor activity in mammalian species. The products are highly soluble in aqueous solutions and they may be administered either orally or in parenteral form.
4497657 Method for recovering platinum in a nitric acid plant February 5, 1985
Improved recovery of platinum lost from the catalyst gauze in a nitric acid plant is obtained by using palladium containing recovery gauzes configured to enhance the mass transfer characteristics of the system.
4493902 Fluid catalytic cracking catalyst comprising microspheres containing more than about 40 percent January 15, 1985
This application discloses novel fluid catalytic cracking catalysts comprising microspheres containing more than about 40%, preferably 50-70%, by weight Y-faujasite zeolite, methods for making such catalysts, and the use of such catalysts to crack petroleum feedstocks, particularly those
4486276 Method for suppressing hydrogen formation in an electrolytic cell December 4, 1984
A method of operating an electrolytic cell in which cathodic hydrogen formation is suppressed by contacting the catalytic cathode with air or other oxygen-containing gas. The cells are of two types: (1) those in which a membrane is present as a distinct body to seperate the anode from
4483691 Production of synthetic natural gas from coal gasification liquid by-products November 20, 1984
In coal gasification processes for the production of synthetic natural gas by the reaction of coal with steam and oxygen under pressure to form a gasifier synthesis gas and a liquid hydrocarbon by-product, the liquid hydrocarbon by-product is treated for solids and metal removal and is t
4473657 Zeolite restoration September 25, 1984
Molecular sieve catalysts, such as alumino-silicate zeolites, used in hydrocarbon conversion and separation processes, are restored after their recommended use-cycle service, by novel methods of regeneration and metal redispersion, or rejuvenation.An additive compound is injected into th
4470955 Removal of tritiated species from gas streams comprised thereof September 11, 1984
Tritiated species, e.g., tritium, tritiated water, and/or tritiated hydrocarbons, are removed from gas streams comprised thereof by reacting the same over a precious metal catalyst with sufficient air or oxygen to convert all tritiated species to tritiated water and, if hydrocarbons are
4467019 Fuel cell with electrolyte feed system August 21, 1984
A fuel cell having a pair of electrodes at the sites of electrochemical reactions of hydrogen and oxygen and a phosphoric acid electrolyte provided with an electrolyte supporting structure in the form of a laminated matrix assembly disposed between the electrodes. The matrix assembly
4463068 Fuel cell and system for supplying electrolyte thereto with wick feed July 31, 1984
An electrolyte distribution and supply system for use with a fuel cell having a means for drawing electrolyte therein is formed by a set of containers of electrolyte joined to respective fuel cells in a stack of such cells. The electrolyte is separately stored so as to provide for el
4463067 Fuel cell and system for supplying electrolyte thereto utilizing cascade feed July 31, 1984
An electrolyte distribution supply system for use with a fuel cell having a wicking medium for drawing electrolyte therein is formed by a set of containers of electrolyte joined to respective fuel cells or groups thereof in a stack of such cells. The electrolyte is separately stored so
4463066 Fuel cell and system for supplying electrolyte thereto July 31, 1984
An electrolyte distribution and supply system for use with a fuel cell having means for drawing electrolyte therein is formed by a set of containers of electrolyte joined to respective fuel cells in a stack of such cells. The electrolyte is separately stored so as to provide for elec
4463063 Hydrogen generator July 31, 1984
This disclosure relates to a replaceable cartridge hydrogen generator of the type which relies at least partially on the process of anodic corrosion to produce hydrogen. The cartridge has an outer container wall which holds a consumable anodic material and an electrolyte therein. The
4462998 Method of using a cis-platinum(II) amine ascorbate July 31, 1984
A pharmaceutical composition in which the active ingredient is an ascorbate complex of platinum (II) coordinated to ammonia, a monodentate amine ligand or a bidentate amine ligand as, for example, an alkylamine, an alkylenediamine or a cycloalkylamine. Said compositions are useful in the
4457926 Cis-Platinum(II) amine ascorbate complexes July 3, 1984
There are described ascorbate complexes of platinum(II) coordinated to ammonia, a monodentate amine ligand or a bidentate amine ligand as, for example, an alkylamine, an alkylenediamine or a cycloalkylamine. Said complexes are useful in the treatment of malignant tumors in animals and
4450212 Edge seal for a porous gas distribution plate of a fuel cell May 22, 1984
In an improved seal for a gas distribution plate of a fuel cell, a groove is provided extending along an edge of the plate. A member of resinous material is arranged within the groove and a paste comprising an immobilized acid is arranged surrounding the member and substantially fill
4448674 Control of emissions in FCC regenerator flue gas May 15, 1984
A system is described for control of sulfur oxides in emissions to the atmosphere from regenerators of cyclic Fluid Catalytic Cracking Units (FCC). By the disclosed system, hot regenerator flue gas is cooled, air (oxygen) is injected into the cooled flue gas unless oxygen is already
4446009 Selective vaporization process and apparatus May 1, 1984
An improvement is disclosed on selective vaporization for decarbonizing and demetallizing heavy petroleum stocks by short time riser contact with hot inert solid contact material. Flexibility is imparted to that process by suspending the contact material in steam generated by injection o
4444728 Iridium-rhenium crucible April 24, 1984
A crucible for preparing a single crystal which comprises an iridium-rhenium alloy comprised of from about 80 to about 99 parts of iridium and from about 1 to about 20 parts of rhenium. The crucible has excellent creep resistance and compatability properties and is especially useful
4444665 Treated mineral and method for purifying liquids therewith April 24, 1984
Attapulgus clay rendered substantially non-swelling and non-gelling by calcination is treated with a large organophilic quaternary ammonium or phosphonium compound to yield a sorbent material effective for purifying liquids from inorganic and organic contaminants. Treatment of the minera
4440874 Catalyst composition and method for its manufacture April 3, 1984
A catalyst composition well suited for oxidation, reduction and oxidation-reduction reactions comprises a platinum group metal component, an oxide composite, and a refractory metal oxide support. The oxide composite comprises at least one member selected from a first group consisting
4438082 Platinum gold catalyst for removing NO.sub.x and NH.sub.3 from gas streams March 20, 1984
Selective reduction of NO.sub.x with NH.sub.3 as well as decomposition of excess NH.sub.3 is provided over a wide temperature range by a platinum-gold catalyst.
4437455 Stabilization of solar films against hi temperature deactivation March 20, 1984
A multi-layer solar energy collector of improved stability comprising: (1) a solar absorptive film consisting essentially of copper oxide, cobalt oxide and manganese oxide; (2) a substrate of quartz, silicate glass or a stainless steel; and (3) an interlayer of platinum, plus a method fo
4436793 Control system for hydrogen generators March 13, 1984
A control system for a hydrogen generator having a consumable anode, a cathode and an aqueous electrolyte therebetween. The system includes a circuit means which enables electrical current to pass between the anode and cathode in addition to the electrolyte. A control means in the circui
4435272 Process for upgrading crude oil and residual fractions thereof by vaporizing the charge in a fal March 6, 1984
A process for upgrading a petroleum charge of crude oil or residual fractions thereof, in which the charge is dispersed into a descending curtain of heated, substantially inert contact material. This contact material preferably has a conversion rate not substantially greater than 10%
4433191 Skeletal isomerization of n-alkenes February 21, 1984
A novel process for the efficient, selective and steady conversion of n-alkenes, such as n-butylenes, to their skeletal isomers is disclosed. Catalysts and catalytic conditions are also disclosed.
4431462 Method of making multi-bonded silver-cadmium oxide material February 14, 1984
A silver-cadmium oxide material having throughout a substantially uniform cadmium oxide distribution and suitable for use as electrical contact material is made from silver-cadmium oxide having an internal cadmium oxide depleted zone. The layers are bonded together by hot rolling which
4430390 Compact fuel cell stack February 7, 1984
A compact fuel cell stack in which a plurality of fuel cells are arranged in a stack between end plates. Resilient means such as springs are connected between the end plates, imposing on the end plates a force which urges the end plates together to apply a predetermined compressive loadi
4430199 Passivation of contaminant metals on cracking catalysts by phosphorus addition February 7, 1984
High gas and coke make due to contamination of a zeolitic fluid cracking catalyst by metal species such as nickel and vanadium during a cracking process is reduced by adding a phosphorus compound to the process. When the catalyst already contains a metals passivating agent or such agents
4430188 Electrodes for use in an electrolytic process February 7, 1984
An electrode for use in an electrolytic reaction in an electrolytic cell, such as an anode in the manufacture of chlorine or hypochlorites, or the production of organic compounds or the electrolysis of water, comprises a valve metal base or substrate, at least a portion of the exposed su
4427538 Selective vaporization process and apparatus January 24, 1984
An improvement is disclosed on selective vaporization for decarbonizing and demetallizing heavy petroleum stocks by short time contact with hot inert solid contact material. Flexibility is imparted to that process by suspending the contact material in steam or other carrier gas and addin
4427450 Chalking-resistant, calcined kaolin clay pigment and method of making January 24, 1984
Novel pigments useful as primary extenders in exterior grade latex formulations are described. The pigments are composed of particles of calcined clay, substantially all the particles of which are finer than about 44 microns and having an average particle size, equivalent spherical d
4426262 Promotion of Pt-Ir catalytic electrodes with lead, tantalum, ruthenium and oxygen January 17, 1984
Platinum and iridium in catalytic electrodes for electrochemical uses is partially replaced with lead ruthenate-tantalum oxide composite. Electrodes are fabricated by first coating a film-forming metal substrate with a platinum-iridium composite undercoat, then overcoating with a com
4421617 Photolytic production of hydrogen from water December 20, 1983
A catalytic dispersion of fine metal particles mediates the photodissociation of water into hydrogen gas. A protective agent adsorptive to said particles and selected from among homopolymers, copolymers, hydrocarbyl radicals and polysaccharides stabilizes the said dispersion.
4418099 Non-burnished precious metal composition November 29, 1983
A composition containing a vehicle or solvent, one or more precious metal metallo-organic compounds, a base metal metallo-organic compound, and at least one non-metallic luster or pearlescent pigment; plus a method for obtaining lustrous burnish-like precious metal films on glass and cer
4416916 Thin film solar energy collector November 22, 1983
A multi-layer solar energy collector of improved stability comprising: (1) a substrate of quartz, silicate glass, stainless steel or aluminum-containing ferritic alloy; (2) a solar absorptive layer comprising silver, copper oxide, rhodium/rhodium oxide and 0-15% by weight of platinum
4412859 Method for recovering platinum in a nitric acid plant November 1, 1983
Improved recovery of platinum lost from the catalyst gauze in a nitric acid plant is obtained by using palladium containing recovery gauzes configured to enhance the mass transfer characteristics of the system.
4407785 Method of conducting catalytically promoted gas-phase reactions October 4, 1983
There is disclosed a method for conducting catalytic reactions, particularly hydrogenation or oxidation of vaporous, carbonaceous materials, utilizing a plurality of thin catalyst bodies in a spaced-apart relationship.
4405507 Ozone abatement catalyst having improved durability and low temperature performance September 20, 1983
Precious metal ozone decomposition catalyst, its stabilization and method for decomposing ozone for purification and detoxification purposes by contacting with a decomposition catalyst containing a platinum group metal and a nonprecious Group VIII metal oxide or aluminate on a support,
4394293 Catalyst for the photolytic production of hydrogen from water July 19, 1983
A catalytic dispersion of fine metal particles mediates the photodissociation of water into hyrogen gas. A protective agent adsorptive to said particles and selected from among homopolymers, copolymers, hydrocarbyl radicals and polysaccharides stabilizes the said dispersion.
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