Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 5879655 | Method of making microporous non-zeolitic molecular sieves The present invention is a method for synthesizing non-zeolitic molecular sieves which have a three-dimensional microporous framework structure comprising AlO2 ! and PO2 ! units. In preparing the reaction mixture, a critical feat... | 03/09/1999 |
| 5625004 | Two-step thermal process for the preparation of alkenyl succinic anhydride A process for the preparation of an alkenyl-substituted succinic anhydride wherein the alkenyl substituent has a number average molecular weight of from about 500 to 5000 and the average number of succinic groups per alkenyl group is greater than 1.2 whic... | 04/29/1997 |
| 5556900 | Process for producing a polyepoxy polymer-linked-asphalt thermoplastic composition Disclosed is a thermoplastic polymer-linked-asphalt and a process for making a thermoplastic polymer-linked-asphalt. More particularly, disclosed is a reaction process for linking epoxide-containing polymers to asphalt. The improved thermoplastic polymer-... | 09/17/1996 |
| 5439583 | Sulfur removal systems for protection of reforming crystals A process is disclosed for removing residual sulfur from a hydrotreated naphtha feedstock. The feedstock is contacted with molecular hydrogen under reforming conditions in the presence of a less sulfur sensitive reforming catalyst to convert trace sulfur ... | 08/08/1995 |
| 5415037 | Method and apparatus for monitoring downhole temperatures A method and apparatus for determining the temperature in a wellbore is disclosed. The apparatus is lowered into a wellbore to a desired depth and logged over a selected interval. At least one first heat flux and temperature sensor contacts the wellbore w... | 05/16/1995 |
| 5416697 | Method for determining rock mechanical properties using electrical log data A method for determining rock mechanical properties and for selecting a drill bit is disclosed. A set of electrical log data parameters over a selected zone in a wellbore is provided, and the respective shale and non-shale volumes are determined. A fluid-... | 05/16/1995 |
| 5413700 | Treating oxidized steels in low-sulfur reforming processes A method for reforming hydrocarbons comprising coating portions of a reactor system with a material more resistant to carburization, reacting the material with metal oxides existing in the portions of the reactor system prior to coating, fixating or remov... | 05/09/1995 |
| 5407558 | Method for controlling multistage aromatization process to give high aromatic barrel per calendar day throughput A method is provided of selecting operating parameters for an aromatization process having at least penultimate and final stages, each containing a respective catalyst, for optimum aromatic barrel per calendar day (AB/CD) production of product having a se... | 04/18/1995 |
| 5405525 | Treating and desulfiding sulfided steels in low-sulfur reforming processes A method for reforming hydrocarbons comprising coating portions of a reactor system with a material more resistant to carburization, reacting the material with metal sulfides existing in the portions of the reactor system prior to coating, fixating and re... | 04/11/1995 |
| 5406014 | Dehydrogenation processes, equipment and catalyst loads therefor Disclosed are methods for dehydrogenation of alkanes into alkenes in reactor systems of improved resistance to carburization under dehydrogenation conditions. The reactor walls are provided with a carburization and abrasion resistant protective layer by a... | 04/11/1995 |
| 5393408 | Process for the stabilization of lubricating oil base stocks A process is disclosed for producing a hydrogenated lubricating oil base stock having improved stability. A lube oil base stock is contacted with hydrogen in a first hydrogenation zone under hydrogenation reaction conditions in the presence of a macroporo... | 02/28/1995 |
| 5393309 | Fuel additive compositions containing polyisobutenyl succinimides A fuel additive composition comprising (a) a polyisobutenyl succinimide derived from ethylenediamine or diethylenetriamine, wherein the polyisobutenyl group has an average molecular weight of about 1200 to 1500 and (b) a nonvolatile paraffinic or naphthen... | 02/28/1995 |
| 5393410 | Hydrocarbon conversion processes and catalysts used therein This invention relates to catalyst compositions useful in converting hydrocarbonaceous oils. The catalyst comprises an ultra stable Y zeolite base, wherein said Y zeolite has a unit cell size greater than about 24.55 Å and a crystal size less than about ... | 02/28/1995 |
| 5391289 | FCC process with rapid separation of products A method of fluid catalytic cracking of hydrocarbon feed which for rapid separation of the fluid catalytic cracking catalyst from the mixture of gases and products, utilizes a U-turn inertial separator directly coupled to cyclone separation.... | 02/21/1995 |
| 5391287 | Hydrocarbon conversion process using zeolite SSZ-35 The present invention relates to new crystalline zeolite SSZ-35 prepared by processes for preparing crystalline molecular sieves, particularly large pore zeolites, using conformationally constrained aza-polycyclic ring system templating agents.... | 02/21/1995 |
| 5389111 | Low emissions diesel fuel A low emissions diesel fuel with prescribed levels of aromatics and cetane number is disclosed which, when combusted in a diesel engine, results in lower emissions than the California Reference diesel fuel.... | 02/14/1995 |
| 5389112 | Low emissions diesel fuel A low emissions diesel fuel with prescribed levels of aromatics and cetane number is disclosed which, when combusted in a diesel engine, results in lower emissions than the California Reference diesel fuel.... | 02/14/1995 |
| 5380345 | Polyalkyl nitro and amino aromatic esters and fuel compositions containing the same Polyalkyl nitro and amino aromatic esters having the formula: ##STR1## wherein A1 is nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to ... | 01/10/1995 |
| 5376260 | Process for producing heavy lubricating oil having a low pour point Heavy waxy oil is dewaxed by a mild cracking and isomerization process using a catalyst comprising SSZ-32 and at least one Group VIII metal. The heavy oil contains naphthenic wax, which includes only a relatively small amount of normal alkanes. Naphthenic... | 12/27/1994 |
| 5376259 | Staged catalyst processing to produce optimum aromatic barrel per calendar day aromatic production A naphtha feed is contacted in a penultimate aromatic forming stage under catalytic aromatic forming conditions with a first catalyst. The effluent from the penultimate stage is contacted in a final aromatic forming stage under catalytic aromatic forming ... | 12/27/1994 |
| 5375660 | Method to increase the flow capacity of a geologic formation Minerals in a subterranean formation are dissolved by treating them in the presence of an organic acid with a fluoride-containing compound having a concentration in the range of from 0.007 N to 0.05 N. The hydrogen ion concentration can be less than 0.02 ... | 12/27/1994 |
| 5370776 | Electrochemical impedance spectroscopy method for evaluating corrosion inhibitor performance A simple, expedient method for measuring the effectiveness of a corrosion inhibitor provided to a metallic surface by a surface layer, wherein the layer is formed by use of the corrosion inhibitor is a corrosive fluid. The method employs the measuring of ... | 12/06/1994 |
| 5371121 | Bitumen compositions containing bitumen, polymer and sulfur Disclosed are asphalt compositions prepared from bitumen, a tri-block copolymer of styrene and butadiene, and from about 0.015 to about 0.075 weight percent of elemental sulfur. The asphalt compositions described herein are useful in industrial applicatio... | 12/06/1994 |
| 5366517 | Fuel additive compositions containing poly(oxyalkylene) hydroxyaromatic ethers and poly(oxyalkylene) amines A fuel additive composition comprising: (a) a poly(oxyalkylene) hydroxyaromatic ether having the formula: ##STR1## or a fuel-soluble salt thereof; where R1 and R2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 ca... | 11/22/1994 |
| 5366519 | Fuel additive compositions containing poly(oxyalkylene) hydroxyaromatic esters and poly(oxyalkylene) amines A fuel additive composition comprising: (a) a poly(oxyalkylene) hydroxyaromatic ester having the formula: ##STR1## or a fuel-soluble salt thereof; where R1 and R2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 c... | 11/22/1994 |
| 5366615 | Process for producing a hydrocarbon product having selectivity for jet fuel A process for producing a hydrocarbon product using a catalyst prepared from an ultra-stable Y-type zeolite having a silica/alumina ratio from about 27 to about 33 with the free acid sites passivated using a basic nitrogen-containing compound. The hydroca... | 11/22/1994 |
| 5363915 | Enhanced oil recovery technique employing nonionic surfactants A method for enhancing the recovery of petroleum from an oil bearing formation during injection of a non-condensible gas comprises the at least periodic injection of a foam forming composition or a preformed foam into the reservoir. The foam which is prod... | 11/15/1994 |
| 5364517 | Perovskite-spinel FCC NOx reduction additive The NOx content of FCC regenerator flue gas is reduced using a spinel/perovskite additive which maintains activity during FCC operation in the presence of high levels of sulfur oxides and oxygen. Additionally, a stabilization component may be added to enh... | 11/15/1994 |
| 5361632 | Method and apparatus for determining multiphase holdup fractions using a gradiomanometer and a densitometer A method and apparatus determines three phase holdup fractions and flow rates for the individual phases of a fluid flowing in a well. A logging tool comprising a temperature compensated gradiomanometer having a differential pressure detector comprised of ... | 11/08/1994 |
| 5358631 | Dehydrocyclization or catalytic reforming using sulfur tolerant zeolite catalyst A process is provided for catalytic reforming or dehydrocyclization of hydrocarbons using a catalyst comprising a noble metal, and an intermediate pore size crystalline silicate having a high silica to alumina ratio and a relatively low alkali content. Pr... | 10/25/1994 |
| 5351757 | Method for silica gel emplacement for enhanced oil recovery A method for emplacing a silicate gel to improve the sweep efficiency of a water, gas, or steam flood operation by reducing the permeability of high-permeability thief zones is disclosed. Controlled quantities of a silicate solution and either a gas or a ... | 10/04/1994 |
| 5347069 | Treating oily wastes Disclosed is a process for treating oily wastes, which have a predominantly liquid phase, by mixing the oily waste with a granulating medium under turbulent flow conditions. The process comprises mixing the oily waste with a granulating medium under such ... | 09/13/1994 |
| 5345819 | Method and apparatus for wellbore stability analysis Method and apparatus for the nondestructive testing of rock samples as a function of time are disclosed. A rock sample is placed in a sample vessel which simulates in-situ wellbore conditions of pressure, temperature and fluid effects. Ultrasonic signals ... | 09/13/1994 |
| 5344313 | Fugitive volatile organic compound vapor collection system A system is provided for controlling volatile organic compound emissions from rotating and reciprocating mechanical equipment. The system comprises a vapor flow, a combustor, and a device for preventing combustion of the volatile organic compound within t... | 09/06/1994 |
| 5345022 | Saturate minimization in normal alpha olefins Disclosed is a process for producing normal alpha olefins having low saturates content. The process involves the use of a Group VIII metal-containing transalkylation catalyst to minimize the amount of saturates formed.... | 09/06/1994 |
| 5340563 | Preparation of zeolites using low silica/alumina zeolites as a source of aluminum An improved method of synthesizing large pore zeolites is disclosed and claimed. The method comprises preparing a reaction mixture containing a source zeolite on alkali metal, nitrogen containing organic cation, a source of silica, and water, and having t... | 08/23/1994 |
| 5330569 | Industrial asphalts Disclosed is a method of producing an industrial asphalt from a bituminous material. One preferred embodiment comprises mixing together without air-blowing: a. a feed material comprising a bituminous material having a viscosity of at least 50 centistokes ... | 07/19/1994 |
| 5330663 | Neutral and low overbased alkylphenoxy sulfonate additive compositions This invention is directed to neutral and low overbased alkylphenoxy sulfonates having a dialkyl content sufficient to provide an essentially neutral alkylphenoxy sulfonate having a viscosity no greater than about 1000 cSt at a temperature of 100° C. in ... | 07/19/1994 |
| 5330664 | Neutral and low overbased alkylphenoxy sulfonate additive compositions derived from alkylphenols prepared by reacting an olefin or an alcohol with phenol in the presence of an acidic alkylation catalyst This invention is directed to neutral and low overbased alkylphenoxy sulfonates derived from alkylphenols prepared by alkylating phenol with an acidic alkylation catalyst having a Hammett (Ho) acidity function of about -2.3 or less (more negati... | 07/19/1994 |
| 5328595 | Reforming naphtha with large-pore zeolites Catalytic reforming of a naphtha feed with large-pore zeolites containing Group VIII metals and Group IA or Group IIA metal cations.... | 07/12/1994 |
