| Patent Number |
Title Of Patent |
Date Issued |
| 4740538 |
Coated minerals for filling plastics |
April 26, 1988 |
| A filled engineering plastic is provided with improved impact strength by pretreating the filler to provide separate coating deposits of a coupling agent and an impact modifier for the plastic matrix. For a nylon plastic composite, a kaolin filler coated with separate deposits of an amin |
| 4738947 |
Three-way catalysts of improved efficiency |
April 19, 1988 |
| A three-way catalyst of improved efficiency suitable for simultaneously oxidizing both gaseous hydrocarbons and carbon monoxide, while reducing nitrogen oxides is disclosed. The three-way catalyst includes alumina, a platinum group metal and a rare earth metal oxide having deposited ther |
| 4738726 |
Treatment of clays with cationic polymers to prepare high bulking pigments |
April 19, 1988 |
| A highly bulked kaolin pigment is prepared by mixing a small but effective amount of a water-soluble cationic polyelectrolyte flocculant with a kaolin clay pigment in the presence of water to prepare a bulked clay pigment product. Upon dewatering, the resultant polyelectrolyte treated |
| 4732637 |
Method of fabricating an integral gas seal for fuel cell gas distribution assemblies |
March 22, 1988 |
| 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. |
| 4728533 |
Process for forming integral edge seals in porous gas distribution plates utilizing a vibratory |
March 1, 1988 |
| A process for forming an integral edge seal in a gas distribution plate for use in a fuel cell. A seal layer is formed along an edge of a porous gas distribution plate by impregnating the pores in the layer with a material adapted to provide a seal which is operative dry or when wetted b |
| 4727052 |
Catalyst compositions and methods of making the same |
February 23, 1988 |
| A method of making a catalyst composition comprising an activated alumina coating stabilized against thermal degradation includes applying a coating of alumina having one or more platinum group metal catalytic components dispersed thereon onto a carrier substrate and calcining the coatin |
| 4724065 |
Hydrocarbon conversion with hot and cooled regenerated catalyst in series |
February 9, 1988 |
| An improved heat balanced hydrocarbon conversion process is disclosed of the type employing circulating solids between a riser reactor (contactor) and regenerator (combustor). The ratio of circulating solid to hydrocarbon feed (C/O or cat-oil ratio) is increased by: directly cooling a po |
| 4714694 |
Aluminum-stabilized ceria catalyst compositions, and methods of making the same |
December 22, 1987 |
| A catalyst material comprises an aluminum-stabilized ceria which optionally may be combined with an activated alumina and may also comprise one or more platinum group metal catalytic components. A method of making the material includes impregnating bulk ceria or a bulk ceria precursor wi |
| 4699893 |
Fluid cracking catalyst and method of making same from waste catalyst manufacture fines |
October 13, 1987 |
| An improved process for ion-exchanging sodium ions in particles containing sodium form zeolite crystals and sodium silicate. The process involves an initial ion-exchange at pH about 4.5 to 5.0 with an ammonium salt followed by exchange with an ammonium salt at about pH 2.0 to 3.5. Cracki |
| 4685019 |
Controlled electrical contacts for electrical switchgear |
August 4, 1987 |
| Most contacts that are used in electrical switchgear are prone to erosion due to electrical arcs that are developed at the make and break of a circuit. Arcing is one of the major problems that can cause catastrophic failure of switchgear. In accordance with the invention, a discreet, |
| 4678770 |
Three-way catalyst for lean exhaust systems |
July 7, 1987 |
| Three-way catalysts containing rhodium, rare earth oxide and platinum and/or palladium of improved durability, when subjected to exhaust gases containing excess oxygen, are formed, when the rhodium is segregated from the rare earth oxide, thereby preventing undesirable interactions betwe |
| 4677095 |
Stabilized alumina catalyst support coatings |
June 30, 1987 |
| A method for stabilizing alumina supports for metal catalysts by impregnating the support with an aqueous dispersion of a high molecular weight, water dispersible polyorganosiloxane and calcining. |
| 4675308 |
Three-way catalyst for lean operating engines |
June 23, 1987 |
| The invention relates to improved catalytic compositions for controlling gaseous contaminants from the combustion of carbonaceous fuels and, in particular, to three-way catalysts having improved ability to convert unburnt hydrocarbons, carbon monoxide and nitrogen oxides to less harmful |
| 4674474 |
Stone cutting wire saw |
June 23, 1987 |
| A wire saw for cutting of stone is disclosed. Abrasive cutter elements are borne on slidable rotatable carriers encompassing a single filament metallic wire. The longitudinal motion of the slidable carrier elements is limited by helical spring restraining elements which are joined to the |
| 4670359 |
Fuel cell integrated with steam reformer |
June 2, 1987 |
| A H.sub.2 -air fuel cell integrated with a steam reformer is disclosed wherein a superheated water/methanol mixture is fed to a catalytic reformer to provide a continuous supply of hydrogen to the fuel cell, the gases exhausted from the anode of the fuel cell providing the thermal en |
| 4668124 |
Disposal of material containing vanadium as landfill |
May 26, 1987 |
| Materials containing vanadium values which are leachable by water are treated to reduce the leachability of vanadium to minimum practical values, thereby rendering the material suitable for disposal as landfill. Vanadium is insolubilized by adding a polyvalent metal salt which is cap |
| 4663189 |
Ceramic multilayer electrical capacitors |
May 5, 1987 |
| Ceramic multilayer capacitors are prepared having a reduced metal content in the electrode by the use of finely-divided metal alloy flaked particles. |
| 4640752 |
Method for producing silver colored brazing alloy |
February 3, 1987 |
| A strip of silver-copper brazing alloy, connected to the positive terminal of a rectifier, is passed through an acid treatment bath containing a cathode adjacent each face of the strip. The strip is resistively heated to a temperature of at least 350.degree. C. prior to its entry into th |
| 4640716 |
High bulking pigment and method of making same |
February 3, 1987 |
| A pigment comprising particles of uncalcined kaolin clay combined in the absence of a binder with an amount of an added source of zirconium ion, such as ammonium zirconium carbonate, at least sufficient to enhance optical character of a dried composition containing the pigment. In ap |
| 4631262 |
Method of making seed solution useful in zeolite catalyst manufacture |
December 23, 1986 |
| The useful storage life of a clear solution of seeds used to initiate the crystallization of zeolite in porous microspheres of calcined clay is increased by adding sodium silicate solution to a matured seed solution. |
| 4628042 |
Porous mullite |
December 9, 1986 |
| Clay convertible by thermal treatment into crystalline mullite and silica is formed into green coherent bodies of desired size and shape such as, for example, microspheres, pellets or honeycombs. The bodies are then calcined to convert the clay into a mixture of crystalline mullite and |
| 4626283 |
Corrosion and marine growth inhibiting compositions |
December 2, 1986 |
| Amine-complexed zinc salts of organic diacids selected from the group consisting of (i) dicarboxylic acids, (ii) diphenols, and (iii) phthalic acids. Specifically disclosed compounds include C.sub.2 -C.sub.3 alkylene diamine-complexed zinc salts of thiodiphenol and sulfonyldiphenol, and |
| 4624940 |
High temperature catalyst compositions for internal combustion engine |
November 25, 1986 |
| Catalysts having three types of particles dispersed on a monolith have surprising oxidation and three-way activity even after exposure to temperatures above 1000.degree. C. The particle types are: (1) palladium dispersed on stabilized alumina; (2) ceria-containing promoter particles |
| 4619705 |
Nonionic surfactant treated clays, methods of making same, water-based paints, organic solvent-b |
October 28, 1986 |
| A dry clay product useful as a filler in organic solvent-based paints and water-based paints to impart improved gloss to dried films of the paints and in paper coatings to improve the gloss of paint films and paper coatings and to improve gloss ink holdout in paper coatings and comprisin |
| 4609563 |
Metered charge system for catalytic coating of a substrate |
September 2, 1986 |
| Method and apparatus for coating catalytic converter substrates with an exact amount of a precious metal. In the course of operation of the apparatus, a hollow substrate to be treated having opposed open ends is transferred from a starting location such that one end is lowered into a |
| 4608357 |
Catalytic cracking with mullite composition promoted combustion of carbon monoxide |
August 26, 1986 |
| The present invention provides novel catalyst products for promoting the combustion of carbon monoxide, particularly in catalytic cracking units, especially FCC units. The improved products of the invention comprise one or more catalytically active metals selected from the group consisti |
| 4608229 |
Palladium metal base dental alloy |
August 26, 1986 |
| A palladium alloy for use in making porcelain jacketed dental restorations having the following composition: 60-85 percent by weight palladium, 5-20 percent by weight copper, 3-15 percent by weight gallium, and a modifier metal selected from gold, indium, ruthenium, tin, nickel and mixtu |
| 4606813 |
Fluid catalytic cracking catalyst for cracking sulfur containing petroleum feedstocks and a proc |
August 19, 1986 |
| The present invention is directed to a fluid catalytic cracking catalyst comprising a blend of a catalytically active first component and a second component for reducing the emissions of oxides of sulfur from the regenerator of a catalytic cracking unit and the use of that catalyst to |
| 4606797 |
Method for recovery of high grade gold alloy from karat gold-clad base metal substrates |
August 19, 1986 |
| A method for recovering high grade gold alloy in an unoxidized condition from karat gold clad to a base metal substrate without significant oxidation of the substrate, wherein the substrate is employed as an anode in an aqueous solution of from about 0.02 to about 2% by weight nitric |
| 4605602 |
Corrosion protected, multi-layer fuel cell interface |
August 12, 1986 |
| An improved interface configuration for use between adjacent elements of a fuel cell stack. The interface is impervious to gas and liquid and provides resistance to corrosion by the electrolyte of the fuel cell. The multi-layer configuration for the interface comprises a non-cupreous |
| 4601997 |
Porous mullite |
July 22, 1986 |
| Clay, preferably kaolin, is calcined through its exotherm, but without substantial mullite formation (e.g., 1 hour at 1000.degree. C.). The calcined clay is leached with an alkaline aqueous solution to remove (i.e., leach) silica. The severity of leaching, i.e., amount of silica remo |
| 4588661 |
Fabrication of gas impervious edge seal for a bipolar gas distribution assembly for use in a fue |
May 13, 1986 |
| A bipolar gas reactant distribution assembly for use in a fuel cell is disclosed, the assembly having a solid edge seal to prevent leakage of gaseous reactants wherein a pair of porous plates are provided with peripheral slits generally parallel to, and spaced apart from two edges of |
| 4583583 |
Fuel cell crimp-resistant cooling device with internal coil |
April 22, 1986 |
| A cooling assembly for fuel cells having a simplified construction whereby coolant is efficiently circulated through a conduit arranged in serpentine fashion in a channel within a member of such assembly. The channel is adapted to cradle a flexible, chemically inert, conformable conduit |
| 4583285 |
Method of making self-supporting electrode for sea-water batteries |
April 22, 1986 |
| A process for manufacturing a cathode for a sea-water battery by forming a particulate mixture of silver chloride and a substitute therefor. |
| 4581341 |
Method for producing cracking catalyst |
April 8, 1986 |
| An improved process for preparing a fluid cracking catalyst is disclosed. A slurry of microspheres of kaolin clay calcined to undergo the characteristic exotherm, microspheres of kaolin clay calcined to metakaolin condition and sodium hydroxide solution is formed. The weight ratio of |
| 4581340 |
Fluid cracking catalyst and method of making same from waste catalyst manufacture fines |
April 8, 1986 |
| Co-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-exchanged |
| 4578491 |
Bis(thiocyanato)palladium(II) complexes |
March 25, 1986 |
| There are described novel bis(thiocyanato)palladium(II) complexes containing bidentate amine ligands. These complexes exhibit an anti-tumor effect and are characterized by low mammalian toxicity. |
| 4578490 |
Ionic bis(dicarboxylato)palladate(II) anti-tumor agents |
March 25, 1986 |
| There are described ionic bis(dicarboxylato)palladate(II) products derived from aliphatic and aromatic dicarboxylic acids useful as anti-tumor agents in mammals. Certain of the compounds are novel. |
| 4578118 |
Kaolin clay-based pigment |
March 25, 1986 |
| A substantially white, anhydrous, amorphous aluminosilicate pigment is obtained by calcining a combination of previously uncalcined kaolin clay and an alumina source. The calcination is carried out at a temperature of about 870.degree. C. to 1400.degree. C., preferably about 870.degree. |
| 4575415 |
Apparatus and process for catalytic reforming with continuous sulfur removal |
March 11, 1986 |
| An apparatus and process for continuously removing residual sulfur from a naphtha stream has a primary manganous oxide absorber, a secondary parallel manganous oxide absorber and valve and duct means for by-passing the primary absorber and directing the naphtha feed stream to the sec |
| 4569770 |
Barium compound-containing thickening agent and drilling fluids made therefrom |
February 11, 1986 |
| A drilling fluid comprises uncalcined colloidal attapulgite clay and up to about 10% by weight (of the weight of attapulgite clay) of a barium compound additive such as BaO or Ba(OH).sub.2. The admixture of clay and barium compound may be slurried in either fresh or salt water to provide |
| 4569754 |
Selective vaporization process |
February 11, 1986 |
| Coke or coke and hydrogen production may increase when the Asphalt Residual Treating (ART) Process for removing metallic and carbonaceous contaminants from hydrocarbons is operated with feed stock containing impurities that result in the deposition on the solid particulate contact materi |
| 4552733 |
Polyfunctional catalysts and method of use |
November 12, 1985 |
| This invention provides polyfunctional catalysts comprising a composite of platinum and one or more of rhodium, ruthenium and iridium, a substantially larger quantity of one or more base metal oxides in which the metal is selected from the group consisting of metals having an atomic |
| 4552628 |
Palladium electroplating and bath thereof |
November 12, 1985 |
| Palladium electroplating baths comprising palladium in the form of a palladium tetraammine compound, sulfamate anions, optionally sulfate anions, at least some ammonium cations, and the balance of the cations, if any, being alkali metal cations, the bath operating at a pH of about 5 to |
| 4550034 |
Method of impregnating ceramic monolithic structures with predetermined amounts of catalyst |
October 29, 1985 |
| A method for impregnating the interior skeletal structure of a ceramic monolithic catalyst support with a slurry of catalyst material is disclosed wherein a predetermined amount of catalyst slurry is metered into contact with a first end of the support. A cover is placed over the per |
| 4539307 |
Activation of platinum containing reforming catalysts |
September 3, 1985 |
| A metal catalyst preferably comprised of a platinum/rhenium metal combination, supported on alumina is activated for the reforming of hydrocarbon feedstock, by being contacted with an oxygen-containing gas at a temperature sufficient to oxidize the metal catalyst and then being reduc |
| 4534943 |
Apparatus for catalytic reforming with continuous sulfur removal |
August 13, 1985 |
| An apparatus for continuously removing residual sulfur from a naptha stream has a primary manganous oxide absorber, a secondary parallel manganous oxide absorber and valve and duct means for by-passing the primary absorber and directing the naptha feed stream to the secondary absorber. |
| 4534315 |
Animal litter container |
August 13, 1985 |
| An animal litter container has a receptacle containing a lower layer of moisture-absorbent material covered by a liquid-permeable upper layer of particulate material which is relatively moisture-impervious. The lower layer may be segregated from the upper layer by a liquid-permeable barr |
| 4526843 |
Film bonded fuel cell interface configuration |
July 2, 1985 |
| An improved interface configuration for use between adjacent elements of a fuel cell stack. The interface is impervious to gas and liquid and provides resistance to corrosion by the electrolyte of the fuel cell. A multi-layer arrangement for the interface provides bridging electrical |
| 4526614 |
Method for recovering platinum in a nitric acid plant |
July 2, 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. |
