| Patent Number |
Title Of Patent |
Date Issued |
| RE31604 |
Multi-layer well screen |
June 19, 1984 |
| This is a special downhole multi-layer sand screen for oil and other fluids containing sand. The preferred embodiment of the sand filter includes an outer screen, an intermediate screen and an inner screen although another embodiment may have only an outer and an inner screen. The outerm |
| RE31331 |
Group Va and VII oxygen mineral acids as catalyst modifiers |
August 2, 1983 |
| A propylene polymerization catalyst is formed by incorporation into a catalytic mixture, comprising a transition metal compound and an organoaluminum compound, effective amounts of Group Va or Group VII oxygen mineral acids whereby the amount of n-hexane-soluble polymeric product is |
| RE31243 |
Catalyst system |
May 17, 1983 |
| A propylene polymerization catalyst is formed by incorporation into a catalytic mixture, comprising a transition metal compound and an organoaluminum compound, effective amounts of hexavalent sulfur mineral acid or anhydride whereby the amount of n-hexane-soluble polymeric product is |
| RE31187 |
Catalyst system |
March 22, 1983 |
| A propylene polymerization catalyst is formed by incorporation into a catalytic mixture, comprising a transition metal compound and an organoaluminum compound, effective amounts of Group Va or Group VII oxygen mineral acids whereby the amount of n-hexane-soluble polymeric product is |
| RE30767 |
Method using lignosulfonates for high-temperature plugging |
October 13, 1981 |
| A method of selective plugging of undesirable high permeability streaks and channels in oil-bearing reservoirs during high temperature (250.degree. F. or higher) injection recovery processes such as steamflooding, underground combustion, flooding of a naturally occurring high-temperature |
| RE30590 |
Vertically moored platform |
April 28, 1981 |
| This invention relates to a structure floating on a body of water. Three or more spar buoy-type floats support the structure above the water. The structure is connected to anchors in the floor of the body of water by .[.elongated members such as.]. large diameter pipe .Iadd.for examp |
| RE30148 |
Melt finishing process for polymers produced by vapor state polymerization processes |
November 13, 1979 |
| A melt finish process is disclosed herein for working up solid, particulate polymer from a vapor state polymerization reactor, which reactor employs high yield catalysts, whereby the polymer is moved out of the reactor and into a post polymerization zone characterized by essentially adia |
| D302820 |
Combined fuel pump and canopy structure for a service station |
August 15, 1989 |
|
| D279167 |
Bottle |
June 11, 1985 |
|
| 6982342 |
Ammoxidation of carboxylic acids to a mixture of nitriles |
January 3, 2006 |
| A process for increasing the yield of acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a carboxylic acid, ammonia and air into a reaction zone containing an ammoxidation cat |
| 5270112 |
Hybrid reinforcements for high temperature composites and composites made therefrom |
December 14, 1993 |
| The subject invention relates to a hybrid reinforcement material comprising a refractory metal core having a first coating comprising aluminum, oxygen and nitrogen, this coating of the general formula:whereinx is up to about 670 atomic % of the coatingy is from about 20 atomic % to about 55 |
| 5227249 |
Boride coatings for SiC reinforced Ti composites |
July 13, 1993 |
| The subject invention relates to a coated reinforcement material comprising a SiC reinforcement having an outer core coating of the general formula:wherein M is at least one of V, Nb, Ta, Cr, Mo, W, Zr, and Hf; x is between about 30 and 60 atomic percent; y is between about 5 and 30 atomic |
| 5212137 |
Catalyst for the manufacture of acrylonitrile and methacrylonitrile |
May 18, 1993 |
| Olefins such as propylene and isobutylene are converted to the corresponding unsaturated nitriles, acrylonitrile, and methacrylonitrile, respectively, by reacting a mixture of the olefin, ammonia, and molecular oxygen-containing gas in the presence of a catalyst containing the oxides |
| 5204079 |
HCN by catalytic ammoxidation of crude acetonitrile |
April 20, 1993 |
| A process of producing hydrogen cyanide from crude acetonitrile comprising contacting the crude acetonitrile with an ammoxidation catalyst at an elevated temperature in the presence of an oxygen containing gas and ammonia. Preferably, the process is performed in the absence of propylene. |
| 5068215 |
Catalyst for upgrading low molecular weight hydrocarbons |
November 26, 1991 |
| A multi-component oxide catalyst comprising zinc and an alkali metal is described which is useful particularly for converting methane and/or natural gas to higher molecular weight hydrocarbon products such as ethane and ethylene. The catalyst is characterized by the formulawhereinA is Li |
| 4955328 |
Leading piston engine with two cylinders interconnected through a transfer port |
September 11, 1990 |
| A compression ignition, internal combustion engine has at least one pair of pistons operating in separate cylinders interconnected through a transfer port. Said at least one pair of pistons includes a leading piston linked to a leading crankshaft and operating in a leading cylinder, and |
| 4909857 |
Electrodeposited doped II-VI semiconductor films and devices incorporating such films |
March 20, 1990 |
| A method of electrodepositing a doped compound semiconductor film including tellurium and a metal selected from Group IIB of the Period Table of Elements by adding an effective concentration of dopant ions to the electrolyte bath. Cadmium telluride, mercury cadmium telluride and zinc |
| 4903244 |
Multisource multireceiver method and system for geophysical exploration |
February 20, 1990 |
| A method and system for geophysical exploration including obtaining, processing, displaying and interpreting seismic data. Seismic energy is imparted into the earth's subterranean formation along at least two linear independent lines of action in a seismic survey. At least two linearly |
| 4893286 |
System and method for preprocessing and transmitting echo waveform information |
January 9, 1990 |
| In the field of the echography, the present invention is a system and method of preprocessing and transmitting information (such as echo waveform information) from a source (such as a transducer) to a destination (such as a rule-based computer system). The present invention reduces t |
| 4886395 |
Pipeline to riser connection method and apparatus |
December 12, 1989 |
| Method and apparatus for remotely connecting an offshore structure to an underwater pipeline using a remotely operated vehicle (ROV). The structure has a bell-mouthed bending guide at its base through which a winch line from the surface passes and is temporarily looped back and attached |
| 4876992 |
Crankshaft phasing mechanism |
October 31, 1989 |
| A variable compression ratio engine has a pair of crankshafts connected by a phase adjuster mechanism operative to change the phase angle between the crankshafts so as to vary the compression ratio of the engine. The phase adjuster mechanism includes two pairs of helical phasing gears. E |
| 4861751 |
Production of high temperature superconducting materials |
August 29, 1989 |
| A process is provided for the production of superconducting wires, ribbons, tapes, fibers and the like including the steps of forming an amorphous metal alloy containing at least one of scandium, yttrium or the rare earths; copper; and at least one alkaline earth as an elongated body, an |
| 4829486 |
Transmitting multiple borehole parameters in sonic logging |
May 9, 1989 |
| In an acoustic logging system for providing information regarding selected parameters of the wall of a borehole in the earth, and of the rock formation which is adjacent the borehole, in which a single transmit/receive transducer system (T/RTS) mounted on a rotating assembly probes t |
| 4803666 |
Multisource multireceiver method and system for geophysical exploration |
February 7, 1989 |
| A method and system for geophysical exploration including obtaining, processing, displaying and interpreting seismic data. Seismic energy is imparted into the earth's subterranean formation along at least two linear independent lines of action in a seismic survey. At least two linearly |
| 4788317 |
Ammoxidation of paraffins and catalysts therefor |
November 29, 1988 |
| Disclosed is a process for ammoxidation of paraffins containing 3-5 C atoms using a complex metal oxide catalyst which is essentially free of bismuth, and has the elements and the proportions which are represented by the following empirical formula:whereA is one of more of W, Sn, B, Mo a |
| 4780380 |
Porous lithium electrodes and their use in nonaqueous electrochemical cells |
October 25, 1988 |
| Porous lithium electrodes for use in nonaqueous electrochemical cells are prepared by depositing lithium from solution in liquid ammonia. |
| 4762961 |
Preparation of vanadium III oxidic compounds and dehydrogenation of paraffins |
August 9, 1988 |
| The vapor phase dehydrogenation of hydrocarbons is achieved with a spinel of the formula AV.sub.2-x C.sub.x O.sub.4 where A is a bivalent metal, V is vanadium substantially in +3 oxidation state, C is a trivalent metal, or with a crystalline perovskite DV.sub.1-y C.sub.y O.sub.3 where D |
| 4746641 |
Ammoxidation of paraffins and catalysts therefor |
May 24, 1988 |
| Disclosed is a process for ammoxidation of paraffins containing 2-5 C atoms over a vanadium-antimony oxide catalyst, the catalyst, and a precursor slurry for making such catalyst. |
| 4746327 |
Ethylene-unsaturated, ester-substituted olefin terpolymer flow improvers |
May 24, 1988 |
| An ethylene-unsaturated, ester-substituted olefin distillate flow improver and cold-flow plugging point improvers are disclosed. |
| 4729101 |
Method for identifying and separating the effects of elastic and anelastic formation properties |
March 1, 1988 |
| The present invention relates to a method for identifying and separating the effects of elastic and anelastic formation properties in a seismic signal representative of the earth's response to seismic energy imparted therein. The seismic signal is decomposed into a measure of the absorpt |
| 4727207 |
Process for converting methane and/or natural gas to more readily transportable materials |
February 23, 1988 |
| The invention relates to a process for converting light hydrocarbon feedstocks such as methane and/or natural gas, to higher molecular weight hydrocarbon products that are more readily handleable and transportable. The process comprises heating a gaseous mixture comprising said light |
| 4722992 |
Injection moldable polymer comprising phthalic anhydride, aniline and trimellitic anhydride moie |
February 2, 1988 |
| Novel polymers and molding compositions are prepared from acyl halide derivatives of tricarboxylic acids and diamines and about 1 to about 10 percent by weight of phthalic anhydride, or trimellitic anhydride or aniline moieties. The polymers are useful in engineering plastics. |
| 4722782 |
Method for solvent treating of tar sands with water displacement |
February 2, 1988 |
| A method for the recovery of bitumen from tar sand comprises slurrying tar sand with about 0.5 to about 4.0 pound of a organic solvent per pound of tar sand, then adding greater than about 0.50 pound water per pound of tar sand, and separating a bitumen rich solvent phase. The method has |
| 4717489 |
Heavy duty diesel engine oil blend |
January 5, 1988 |
| A blend of solvent-extracted neutral (SEN) oils is described which is particularly useful in formulating heavy duty motor oils for lubrication of both diesel and gasoline engines. SEN 100, 140, and 300 are combined in required proportions to meet specified viscosity and boiling range |
| 4713731 |
Double layer capacitor |
December 15, 1987 |
| Improved electrical double layer capacitors having carbon electrodes include in the electrolyte a voltage regulating agent selected from the group of bromides, chlorides, fluorides and iodides. |
| 4713421 |
Process for obtaining narrow molecular weight distribution in vinyl aromatic mass polymerization |
December 15, 1987 |
| In a process for the mass polymerization of vinyl aromatic monomer wherein vinyl aromatic monomer is polymerized in successive stages of increasing temperature, the improvement which narrows the molecular weight distribution of the resulting polymer comprising incorporating a polymer |
| 4711766 |
Apparatus for mixing cracking catalyst with a fluid hydrocarbon |
December 8, 1987 |
| The present invention relates to a plug valve which effects the immediate and intimate mixing of fluidizable cracking catalyst with a fluid hydrocarbon in a riser reactor. Further, a stationary guide tube is located around a portion of the plug valve stem so as to define an upper and |
| 4709080 |
Polyacyl aryl arylates |
November 24, 1987 |
| Aryl arylate esters substituted with an acyl moiety on both the aryl and arylate groups of said esters which can be produced by the oxidation of alkyl substituted aryl arylate esters using a heavy metal/bromine catalyst. |
| 4705832 |
Injection moldable amide-imide copolymers containing polyetherimides |
November 10, 1987 |
| The toughness properties of a polyamide-imide copolymer are improved by the addition of polyetherimides. These copolymers are useful as engineering resins, films are molded objects. |
| 4705643 |
Detergent lubricant compositions |
November 10, 1987 |
| An ashless two-stroke cycle additive is prepared by condensing isostearic acid and tetraethylenepentamine. The additive maintains excellent engine cleanliness and has excellent low-temperature storage stability in a lubricant composition. |
| 4699895 |
Process for the manufacture of catalysts for the production of maleic anhydride |
October 13, 1987 |
| A process for the manufacture of a phosphorus-vanadium and phosphorus-vanadium co-metal catalysts suitable for use in the manufacture of maleic anhydride from benzene, butane, and other C.sub.4 hydrocarbons which process comprises reacting at a temperature of about 0.degree. C. to ab |
| 4696752 |
System for acidizing oil and gas wells |
September 29, 1987 |
| A composition comprising methanol and ethanol, a propanol, or tertiary-butanol, or any combination thereof and a mixture of C.sub.6 -alcohols through C.sub.10 -alcohols is suitable for use in acidizing oil and gas wells. |
| 4684674 |
Injection moldable polyamide-imide containing aromatic sulfone polymers |
August 4, 1987 |
| Novel polyamide-imide-phthalamide copolymers and polyamide-imide copolymers containing aromatic sulfone polymers are disclosed. These copolymers are useful in the manufacture of molded objects and engineering resins. |
| 4684376 |
Process for the modification of aromatic polymers via Friedel-Crafts reactions to produce novel |
August 4, 1987 |
| A process for the addition of pendant groups to polyarylenes comprises the steps of charging a reaction vessel with a solution of a polyarylene and a Friedel-Crafts catalyst; said polyarylene having the formula ##STR1## adding to the reaction vessel a pendant forming group G, wherein |
| 4677598 |
Seismic data acquisition method |
June 30, 1987 |
| Three-dimensional seismic prospecting is conducted using a less than complete multifold array of seismic sources and receivers which are positioned so that the resulting system of linear static connection equations according to common depth point are continuously coupled. |
| 4677597 |
Method for enhancing common depth point seismic data |
June 30, 1987 |
| A method for processing and displaying seismic data. More particularly, a novel method for enhancing the display of common depth point seismic data. Common Depth point gathers of seismic data are processed to enhance the signal-to-noise ratio by reducing the averaging effects of lateral |
| 4673717 |
Process for the modification of aromatic polymers via Friedel-Crafts reactions to produce novel |
June 16, 1987 |
| A process for the addition of pendant groups to polyarylenes comprises the steps of charging a reaction vessel with a solution of a polyarylene and a Friedel-Crafts catalysts; said polyarylene having the formula ##STR1## adding to the reaction vessel a pendant forming group G, wherei |
| 4673442 |
Decoking process |
June 16, 1987 |
| A specially constructed decoking apparatus is provided to effectively and efficiently bore a pilot hole and ream the remainder of a bed of coke with a high pressure stream of water or other cutting fluid without first changing nozzle heads or using different cutting instruments. The nove |
| 4672169 |
Apparatus and method for heating materials with a laser heat source |
June 9, 1987 |
| An apparatus and method for heating materials with photoelectric radiant energy include directing photoelectric radiant energy onto a reflective conical member positioned at one focal line of an ellipsoidal reflective surface. The radiant energy is dispersed by the conical member and |
| 4670104 |
Polar solvent dedusting |
June 2, 1987 |
| A process and system is provided to produce and dedust oil from oil shale and other types of solid hydrocarbon-containing material. In the process, raw oil shale is retorted, preferably with solid heat carrier material, to liberate an effluent product stream of hydrocarbons containing en |
