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| Number | Title | Issue Date |
| 4791088 | Crystalline layered material MCM-20 and process for its preparation Layered silicate materials of high thermal stability and surface area which contain interspathic oxides such as silica as prepared by treating a layered silicate, with organic cation, to spread the layers apart. A compound such as tetraethylorthosilicate,... | 12/13/1988 |
| 4786487 | Preparation of crystalline silicoaluminophosphates There is provided a process for preparation of crystalline microporous silicoaluminophosphates. The process involves the incorporation of a silicate complexing agent, such as fluoride, into an aqueous reaction mixture.... | 11/22/1988 |
| 4780194 | Organic compound conversion with ammonium hydroxide and alkali metal aluminate treated zeolite This invention relates to acid catalysis, e.g. cracking, of organic compound feedstock, e.g. hydrocarbons, over catalyst material treated in a special way for increasing the acid catalytic activity thereof. In particular, a novel catalyst activation proce... | 10/25/1988 |
| 4780227 | Grease composition containing borated alkoxylated alcohols Grease compositions, wherein the grease is thickened with a metal hydroxy-containing soap grease thickener are provided. Another essential ingredient of the compositions is a borated alkoxylated alcohol. The compositions may also contain phosphorus and su... | 10/25/1988 |
| 4780444 | Activation of metallophophates There is provided a method for activating preformed, crystalline aluminum phosphates by combining these aluminum phosphates with an activating metal oxide, such as silica, and water under conditions, such as mulling, sufficient to increase the acid cataly... | 10/25/1988 |
| 4752625 | Thermoplastic foam molding A method for forming a molded thermoplastic foam structure comprising partially filling a mold with solvent imbibed particles of a thermoplastic resin, pressurizing said mold under conditions such as to prevent vaporization of said blowing agent during su... | 06/21/1988 |
| 4752595 | Catalyst pretreatment for regenerated noble metal on zeolite catalyst A process is described for regenerating a coke and poison deactivated noble metal-containing zeolite catalyst material. The activity of the catalyst after oxygen regeneration can be improved by treating the oxidized catalyst at temperatures from 100° to ... | 06/21/1988 |
| 4747815 | Collection of bags and method of preparing the same The present invention relates to a collection of ultra-thin bags and a collection of bags per se wherein said bags are made by providing two separated thermoplastic films; forming transversely across each separated film, lines of weakness extending from o... | 05/31/1988 |
| 4744200 | Thermoplastic bag pack with single tab suspension A bag pack of a plurality of stacked bags made from thermoplastic film, each bag comprising front and rear walls; a bottom; an open-mouth portion, said open-mouth portion being characterized by having handles which are integral extensions of said walls an... | 05/17/1988 |
| 4728439 | Method for flocculating suspensions containing swelled layered chalcogenide A method is disclosed for flocculating suspensions containing (a) layered oxide materials intercalated with a hydrophobic swelling agent and (b) nonintercalated hydrophobic swelling agent. The suspension is contacted with a ketone, water, and a cationic o... | 03/01/1988 |
| 4724066 | Composites of microporous aluminum phosphates and zeolites and conversions over these catalysts There is provided a catalyst comprising a zeolite component and a microcrystalline, microporous aluminum phosphate component. Examples of the zeolite component are ZSM-5 and zeolite Beta, and an example of an aluminum phosphate component is AlPO4 | 02/09/1988 |
| 4720348 | Waterflooding employing thickened surfactant solutions Waterflooding process for the recovery of oil from a subterranean formation in which at least a portion of the injected water is thickened by the addition of a mixture of sulfonated polyethoxylated aliphatic alcohol surfactants. The thickened water has a ... | 01/19/1988 |
| 4720427 | Oriented multi-layer heat sealable film An oriented multi-layer heat sealable film structure comprising a polyolefin film substrate, a layer of a linear very low density copolymer of ethylene and a C4 -C8 alpha olefin or a blend of the same with polypropylene. This structu... | 01/19/1988 |
| 4720872 | Thermoplastic bag and method of forming the same The present invention relates to a sack made of thermoplastic film, said sack having front and rear panels and an open mouth top portion, gusseted side walls wherein the innermost reach of the gusset folds overlap and at the bottom of said sack a heat sea... | 01/19/1988 |
| 4719189 | Reactivation of noble metal-containing zeolite catalyst materials A process is described for rejuvenating a coke-deactivated noble metal-containing zeolite catalyst material which comprises removing coke from a non-sulfided catalyst by contacting the catalyst with oxygen only in the presence of sulfur dioxide, and there... | 01/12/1988 |
| 4711302 | Gravel pack void space removal via high energy impulse Voids in a gravel pack, particularly in deviated wellbores, are substantially eliminated via a process which utilizes a high energy impulse device. Said device is lowered into the vicinity of the voids and detonated thereby causing turbulence through the ... | 12/08/1987 |
| 4711970 | Catalytic conversion A method for increasing the total amount of lattice metal in the framework of a particular porous inorganic crystalline composition, its conversion to hydrogen or hydronium form and use thereof as a catalyst component having enhanced catalytic activity fo... | 12/08/1987 |
| 4709118 | Removal of mercury from natural gas and liquid hydrocarbons utilizing downstream guard chabmer Hydrocarbon liquids an gas, particularly gas to be processed in LNG plants, are treated to remove mercury by contacting them with free bismuth or tin or a mixture of these on silica, alumina, or other type of non-reactive base. The sorbent is prepared by ... | 11/24/1987 |
| 4705829 | Low density polyethylene resin compositions and thermoplastic films thereof Terblends of linear low density polyethylene resins provide enhanced processability and improved output without losing overall film properties.... | 11/10/1987 |
| 4704492 | Selective hydrogenation of acetylenic impurities in crude butadiene In a process wherein the vinyl acetylenes present as an impurity in a stream of butadienes are removed by hydrogenating the stream over a catalyst the loss of butadiene is lessened and catalyst aging is diminished by injecting the hydrogen in reduced quan... | 11/03/1987 |
| 4703025 | Method for purifying zeolitic material A method for purifying zeolitic materials comprising a plurality of solid crystalline phases is disclosed which utilizes the variation in solubility between the phase components comprising the materials. Impure zeolite is contacted with a caustic solution... | 10/27/1987 |
| 4701212 | Recovery of mercury and heat energy from waste using fluidized beds Sulfur-impregnated activated carbon which has become spent by the absorption of mercury is made non hazardous for disposal purposes such as by burying. The spent carbon is at least partially combusted in a fluidized combustion zone. The solid residue is s... | 10/20/1987 |
| 4700562 | Method for determining effectiveness of catalytic dewaxing reactor The pour point of a catalytically dewaxed hydrocarbon oil is determined manually by the ASTM D-97-66 method and also by automatic apparatus such as the Herzog Electronic Pour Point Automatic MC 850 apparatus. A substantial divergence of the two indicates ... | 10/20/1987 |
| 4699608 | Method of making thermoplastic bag and bag pack A thermoplastic bag structure having, in its lay-flat condition, a front and rear bag wall, a two-film heat seal bottom; the outer side margins of the full length of said bag being folded toward but spaced from each other. The top most edge of each fold i... | 10/13/1987 |
| 4698169 | Reaction products of alkenylsuccinic compounds with aromatic amines and lubricant compositions thereof Products made by reacting (i) an alkenylsuccinic compound with (ii) an arylamine and (iii) an alkanolamine, an aminomethane or a hindered alcohol and borated reaction products thereof which provide superior dispersant and antioxidant activity to lubricant... | 10/06/1987 |
| 4696733 | Process for selectively hydrogenating polycondensed aromatics A process is disclosed for hydrogenating or partially hydrogenating polynuclear aromatics by contacting them with manganese nodules in the presence of hydrogen at elevated temperatures. The resulting partially hydrogenated products are useful as hydrogen ... | 09/29/1987 |
| 4695642 | Method for preparing crystalline zirconium phosphates A new crystalline zirconium phosphate composition and method for its synthesis are provided. The composition has ion exchange properties and is readily convertible to catalytically active material by thermal treatment.... | 09/22/1987 |
| 4694114 | Process for isomerizing alkyl aromatic hydrocarbons utilizing ZSM-23 zeolite and a hydrogenation/dehydrogenation metal Alkyl aromatic hydrocarbons including ethyl benzene are isomerized to xylenes utilizing a catalyst consisting essentially of ZSM-23 zeolite, platinum (or other metal such as palladium, nickel, gold, zinc, or gallium) and an alumina support.... | 09/15/1987 |
| 4692423 | Method for preparing structured catalytic solids A method for manufacturing structured catalysts in which a zeolite is uniformly dispersed on at least one surface of a porous support. The porous support may be organic or inorganic, and in the form of a particle, a sheet, a rod, a tube, or a shape object... | 09/08/1987 |
| 4690903 | Process for preparing organic fuels and chemicals from biomass An ethanol fermentation process in which an aqueous solution of fermentable sugar is converted by an ethanol-producing microorganism such as a yeast to a dilute aqueous solution of ethanol with the ethanol being present in the solution at a concentration ... | 09/01/1987 |
| 4686313 | Low nitrogen iron-containing Fischer-Tropsch catalyst and conversion of synthesis gas therewith Synthesis gas (a mixture of hydrogen gas and carbon monoxide) is converted to hydrocarbons by flowing the gas first over iron-containing Fischer-Tropsch catalyst and then over a zeolite. The Fischer-Tropsch catalyst contains relatively little nitrogen as ... | 08/11/1987 |
| 4683052 | Method for non-oxidative hydrogen reactivation of zeolite dewaxing catalysts A method is described for non-oxidatively reactivating coked dewaxing catalyst comprising a zeolite component such as ZSM-5 or zeolite beta. Use of a noble metal as a hydrogenation component associated with the zeolite component, preferably palladium, res... | 07/28/1987 |
| 4683214 | Noble metal-containing catalysts A process is disclosed for preparing a noble metal-containing zeolite catalyst of high noble metal dispersion. The process of crystallizing a zeolite from a forming mixture which contains an organic template, treating the zeolite by calcining or chemical ... | 07/28/1987 |
| 4678764 | Reactivation of noble metal-zeolite catalysts A method for reactivating noble metal-containing zeolites containing sulfur oxide poisoned noble metal such as oxygen regenerated platinum zeolite beta catalysts, by contacting the catalyst with an acidic aqueous solution having a pH below about 7. The so... | 07/07/1987 |
| 4678483 | Methods of particulate measurement Method for measuring particulates in flue gas streams containing chemicals reactive with trace elements in the filters is disclosed which features pretreating the filters with chemicals comparable to those in the process stream whereby the reactions are c... | 07/07/1987 |
| 4678763 | Method for reclaiming heat-damaged catalysts Heat-damaged ZSM-5 type catalysts are reclaimed by hydrothermal treatment with an aqueous medium followed by base exchange with an ammonium salt.... | 07/07/1987 |
| 4678766 | Enhancement of shape selectivity of zeolites A method is provided for enhancing the shape selectivity of a crystalline zeolite having a silica-to-alumina mol ratio greater than 10. The method consists of treating the zeolite with an ammonium fluoride solution at moderately elevated temperature, in t... | 07/07/1987 |
| 4669546 | Method to improve vertical hydraulic fracturing in inclined wellbores A method for improving vertical hydraulic fracturing of an inclined wellbore through in-line openings in said wellbore. Via this method, the initiation, growth, and propagation of vertical fractures are controlled.... | 06/02/1987 |
| 4670412 | Modification of crystalline microporous zeolites Natural and synthetic micorporous crystalline minerals that have a robust three-dimensional framework are modified by treatment with a molten salt that contains a component that reacts with the framework. Highly siliceous ZSM-5 and some aluminum phosphate... | 06/02/1987 |
| 4670615 | Hydrocarbon compound conversion A process is provided for converting feedstock comprising aromatic hydrocarbon compounds to product comprising aromatic hydrocarbon compounds which differs from the feedstock over a catalyst composition comprising a crystalline layered silicate material.... | 06/02/1987 |
