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| Number | Title | Issue Date |
| 4016104 | Recovery of particulate carbon from synthesis gas A process for recovering particulate carbon from the effluent gas stream from a partial oxidation synthesis gas generator by scrubbing the effluent gas with water in a scrubbing zone to form a carbon-water dispersion, by mixing said dispersion in a mixing... | 04/05/1977 |
| 4016103 | Recovery of particulate carbon from synthesis gas A process for recovering particulate carbon from the effluent gas stream from a partial oxidation synthesis gas generator by scrubbing the effluent gas with water in a scrubbing zone to form a carbon-water dispersion, mixing said dispersion in mixing and ... | 04/05/1977 |
| 4014786 | Carbon separation This is a process and apparatus for continuously separating a liquid mixture comprising particulate carbon produced by the partial oxidation of a hydrocarbonaceous fuel, water, and liquid organic extractant into two separate immiscible streams i.e. a stre... | 03/29/1977 |
| 4014982 | Combined process for upgrading spent alkylation acid and reducing noxious gas content of waste gaseous streams The effluent streams from utility stack gases containing nitric oxides and sulfur dioxide are sequentially oxidized, absorbed with effluent spent alkylation acid, the unabsorbed remaining gases contacted with carbon monoxide from alkylation units in refin... | 03/29/1977 |
| 4015270 | Shock proof event recorder A pivoted pointer or stylus is mounted for actuation by reciprocatory plunger action. It has a stop associated with the plunger to hold the stylus locked in a neutral position until the plunger is actuated. The stylus has a cam action surface for cooperat... | 03/29/1977 |
| 4014780 | Recovery of oil from refinery sludges by steam distillation A process for deoiling and dewatering refinery sludges in which sludges, optionally mixed with a diluent oil such as recycle oil recovered in the process, are contacted in a heating zone with steam or superheated steam to effect separation of the sludges ... | 03/29/1977 |
| 4014721 | Ignition mixture for initiating underground in-situ combustion A method for the initiation of an in-situ combustion in an underground formation by injecting into the formation an ignition mixture containing an olefinic hydrocarbon or an unsaturated fatty acid, an organic peroxide and a heavy metal salt.... | 03/29/1977 |
| 4013584 | Processes for regenerating dispersions of ligand-stabilized, palladium and platinum (II) halide complexes used in carbonylation and hydroformylation catalysis This invention concerns chlorinating processes for the regeneration of carbonylation and hydroformylation catalysts consisting of dispersions of ligand-stabilized palladium(II) and platinum(II) halide complexes in quaternary ammonium, phosphonium and arso... | 03/22/1977 |
| 4013712 | Process for making alkane-1,2-diol diesters Disclosed is a controlled two stage process for converting 1-olefins to 1,2-diacetoxyalkanes. In the first stage, the olefins are oxidized to peroxides by preaerating the olefin with oxygen until the measured peroxide value has reached its maximum, then d... | 03/22/1977 |
| 4013546 | Removing metal contaminant from regenerated catalyst in catalytic cracking process This invention relates to a process for catalytically cracking hydrocarbon feedstocks containing a contaminant deleterious to the process and catalyst and to a method for removing the contaminant from a crystalline aluminosilicate cracking catalyst used i... | 03/22/1977 |
| 4013697 | Preparation of carboxylic acids from salts of nitroketones A method of preparing carboxylic acids is provided by contacting an ammonium, Group IA or Group IIA metal salt of a nitroketone in an aqueous medium. The method is preferably undertaken in the presence of an acidic mineral acid salt.... | 03/22/1977 |
| 4013729 | Hydrocarbon upgrading process in secondary alcohol production A process for producing secondary alcohols from n-paraffins wherein a portion of the n-paraffin is converted to a borate ester along with oxygenated by-products and the borate ester is separated and hydrolyzed to a secondary alcohol. The mixtures of C | 03/22/1977 |
| 4013583 | Processes for regenerating dispersions of ligand stabilized, palladium and platinum (II) halide-complexes used in carbonylation and hydroformylation catalysts This invention concerns using mineral acid treatment for the regeneration of carbonylation and hydroformylation catalysts consisting of dispersions of ligand-stabilized palladium(II) and platinum(II) halide complexes in quaternary ammonium, phosphonium an... | 03/22/1977 |
| 4012408 | Lubricating oil additives Lubricating oils of superior copper corrosion inhibiting properties may be made using an additive of 3,5-bis(alkyldithio)-4-substituted isothiazoles as additives.... | 03/15/1977 |
| 4012689 | Radio frequency resistivity and dielectric constant well logging utilizing phase shift measurement The invention disclosed herein includes methods and apparatus for determining the resistivity and dielectric constant of earth materials in the vicinity of a well borehole. A radio frequency electromagnetic field in the frequency range from 20 to 40 megah... | 03/15/1977 |
| 4011845 | Internal combustion engine operation utilizing exhaust gas recirculation The invention relates to a method and apparatus for reducing the amount of undesirable products of combustion which are discharged to the atmosphere from an internal combustion engine during operation of the latter. The apparatus comprises, means for segr... | 03/15/1977 |
| 4011280 | Process for the production of binders for weather-proof wood materials and product Improved resin solutions derived from phenol-acetone-formaldehyde co-condensates useful as binder in weather-proof wood materials and a process for the production of said solutions.... | 03/08/1977 |
| 4009702 | Piston with turbulence inducing face configuration A piston structure for an internal combustion engine which utilizes fuel injection to furnish the engine charge. To provide a more effective operation, and to more fully utilize the air induced into the engine, the piston face is formed with a main cavity... | 03/01/1977 |
| 4010462 | Seismic playback system Hereinafter disclosed is methodology and apparatus for converting wide dynamic amplitude range digital data recorded in floating point digital word form, comprising a binary coded mantissa and a binary coded exponent, to an analog signal, or oscillogram, ... | 03/01/1977 |
| 4009434 | Dielectric induction logging system for obtaining water and residual oil saturation of earth formations Radio frequency electromagnetic fields are used to excite earth formations in the vicinity of a well borehole. The total field amplitude at a single coil receiver and at a dual coil receiver are detected and signals representative thereof are combined acc... | 02/22/1977 |
| 4009094 | Stabilizing pyrolysis naphtha Pyrolysis naphtha is contacted with a residuum hydrocarbon charge stock under process conditions suitable for delayed coking of said residuum hydrocarbon charge. Unstable olefinic and diolefinic components of said pyrolysis naphtha are reduced in the prod... | 02/22/1977 |
| 4008764 | Carrier gas vaporized solvent oil recovery method Viscous petroleum may be recovered from viscous petroleum-containing formations including tar sand deposits by injecting into the formation a gaseous mixture of a carrier gas and a solvent which is liquid at reservoir conditions, such as pentane, hexane, ... | 02/22/1977 |
| 4008181 | Steam dealkylation catalyst and process for preparing it Alkylaromatic hydrocarbons are dealkylated with steam in the presence of catalyst (typically containing oxides of nickel, potassium, chromium, and aluminum) which has been hydrogen-treated at high temperature.... | 02/15/1977 |
| 4008178 | Alkylation catalyst for production of motor fuels A liquid phase alkylation process for production of alkylate useful as motor fuel, wherein low molecular weight isoparaffin hydrocarbons are alkylated with olefin hydrocarbons in the presence of a catalyst comprising HFSO3 and H2 SO | 02/15/1977 |
| 4007786 | Secondary recovery of oil by steam stimulation plus the production of electrical energy and mechanical power The subject process pertains to the secondary recovery of oil by the steam stimulation of an underground oil reservoir. As an added benefit, mechanical power and/or electrical energy may be simultaneously produced. In the subject process, raw fuel gas is ... | 02/15/1977 |
| 4007785 | Heated multiple solvent method for recovering viscous petroleum Viscous petroleum may be recovered from viscous petroleum-containing formations including tar sand deposits by contacting the formation with a heated multiple-component solvent for the petroleum. At least one solvent component is normally gaseous material... | 02/15/1977 |
| 4008165 | Surfactant oil recovery process usable in high temperature formations having high concentrations of polyvalent ions A three surfactant system usable in high temperature petroleum formations containing water having from about 200 to about 14,000 parts per million polyvalent ions such as calcium and/or magnesium dissolved therein and a pH of from 5 to 9, and a method of ... | 02/15/1977 |
| 4007161 | Polymers containing carbon atoms in the backbone with pendant N-hydrocarbylcarboxamide groups Lube oil, characterized by improved properties, may be prepared containing polymers having pendant N-hydrocarbylcarboxamide groups - typically N-(N',N'-dihydrocarbylaminohydrocarbyl) carboxamide groups.... | 02/08/1977 |
| 4007121 | Lubricating oil compositions containing a dispersant amount of aminated nitroketonized hydrocarbon terpolymers Lube oil, characterized by improved properties, may be prepared containing polymers having pendant N-hydrocarbylcarboxamide groups -- typically N-(N',N'-dihydrocarbylaminohydrocarbyl) carboxamide groups.... | 02/08/1977 |
| 4007019 | Production of clean synthesis or fuel gas An improved continuous partial oxidation process for producing clean synthesis or fuel gas and by-product steam from a hydrocarbonaceous fuel feed is disclosed wherein hot gases from the process are simultaneously cooled and cleaned by direct contact with... | 02/08/1977 |
| 4007018 | Production of clean synthesis or fuel gas An improved continuous partial oxidation process for producing clean synthesis or fuel gas from a hydrocarbonaceous fuel feed is disclosed wherein hot gases from the process are simultaneously cooled and cleaned by direct contact with hydrocarbon oil. Thu... | 02/08/1977 |
| 4007015 | Apparatus useful for the production of hydrogen Hydrogen is produced by the combustion of carbon with air to produce a combustion gas effluent containing carbon dioxide and nitrogen. The carbon dioxide is separated and reacted with carbon to produce carbon monoxide. The resulting produced carbon monoxi... | 02/08/1977 |
| 4006779 | Lignosulfonates as sacrificial agents in oil recovery processes A process for producing petroleum from subterranean formations is disclosed wherein production from the formation is obtained by driving a fluid from an injection well to a production well. The process involves injecting via the injection well into the fo... | 02/08/1977 |
| 4006794 | Seismic pneumatic energy source with flap valves for attenuation of bubble pulse amplitude and reduction of period of bubble oscillation A method for decreasing the amplitude and period of bubble pulses following a primary seismic energy pulse comprises generating an expanding air bubble around a body and preventing the air bubble from contracting into the body for attenuating the sudden c... | 02/08/1977 |
| 4006077 | Demetallization of asphaltene-containing petroleum hydrocarbons Metals are removed from metal- and asphaltene-containing petroleum oils by contacting the oil with pellets of sorptive type attapulgus clay which has been extruded and then dried at a temperature between about 100° and 650° C. to a volatile content of l... | 02/01/1977 |
| 4006099 | Manufacture of gaseous mixtures comprising hydrogen and carbon monoxide In the subject partial oxidation process for the continuous production of gaseous mixtures comprising hydrogen and carbon monoxide separate streams of a free-oxygen-containing gas are simultaneously passed through the center conduit and through the outer ... | 02/01/1977 |
| 4006100 | Manufacture of gaseous mixtures comprising hydrogen and carbon monoxide A liquid hydrocarbonaceous fuel in liquid phase is passed through the center conduit of an annulus-type burner at a linear velocity of one foot per second and below. Simultaneously, a gaseous mixture of substantially pure oxygen and steam is passed throug... | 02/01/1977 |
| 4006104 | Process for converting γ-butyrolactone into tetrahydrofuran A process for converting γ-butyrolactone to tetrahydrofuran by treating the lactone with hydrogen in the presence of a cobalt-copper chromite catalyst at elevated pressures and temperatures.... | 02/01/1977 |
| 4006165 | Process for converting maleic anhydride to γ-butyrolactone A process for converting maleic anhydride to γ-butyrolactone by treating the anhydride with hydrogen in the presence of co-catalysts comprising palladium and nickel-copper chromite at elevated pressures and temperatures.... | 02/01/1977 |
| 4004531 | Drilling system for deep water offshore locations A system for drilling and for producing subsea wells in relatively deep waters normally subjected to severe wave and current conditions. A floating drilling vessel or production unit is maintained in position over the well site. A riser pipe, maintained u... | 01/25/1977 |
