| Patent Number |
Title Of Patent |
Date Issued |
| 3967957 |
Aqueous ammonia oxidative leach and recovery of metal values |
July 6, 1976 |
| Certain mineral values are recovered from source material such as ore, scrap metal, and mixtures in the presence of another metal thereof by aqueous ammonia leaching solution, and the mineral values are precipitated by ammonia from said solution as a complex, and the mineral values are |
| 3967860 |
Method of transporting a sulfur-hydrocarbon slurry in a pipeline |
July 6, 1976 |
| The present invention relates to an improved method of transporting a sulfur-hydrocarbon slurry in a pipeline with a minimum of sulfur precipitation and adherence to the internal parts of the pipeline system. The improvement comprises maintaining the flow rate of the slurry to at lea |
| 3966588 |
Catalytic hydrodesulfurization |
June 29, 1976 |
| A process and catalyst for converting hydrocarbon oils to desirable components by contacting said oils in the presence of hydrogen under hydrocarbon conversion conditions with a catalyst comprising a catalytic amount of a catalytic metal supported on gamma alumina. |
| 3966567 |
Electrolysis process and apparatus |
June 29, 1976 |
| An improved process and apparatus for electrolysis of a high purity metal from an aqueous pregnant liquor acid electrolyte at high efficiency and high current density in the presence of impurities. In one embodiment the electrolysis cell employed in such process is provided with a fluid |
| 3966261 |
Coal slurry recovery systems |
June 29, 1976 |
| Improvement structure for use in mine slurry conveyor systems of the type which transport mined material from a plurality of work spaces in the mine to a remotely disposed recovery and finishing plane. The system utilizes permanent tank or silo storage of slurry and water at a centralize |
| 3966088 |
Leak detection apparatus |
June 29, 1976 |
| A leak detection apparatus for a dispensing apparatus having a pump and a pressure-sensing apparatus with an output switch responsive to a predetermined pressure has a pump interrupter circuit with a control input. A pump interrupter control circuit has an input and an output connect |
| 3965984 |
Waterflood method using overbased normal alkylaromatic sulfonates |
June 29, 1976 |
| An improved anionic waterflood additive is prepared by partially chlorinating a normal alkane having about 10 to about 18 carbon atoms to about 2 to about 15 weight percent chlorine content, employing the chlorinated alkane to alkylate an aromatic hydrocarbon, such as benzene; sulfon |
| 3965978 |
Subsurface transient pressure testing apparatus and method of use thereof |
June 29, 1976 |
| Wireline apparatus and method for measuring pressure downhole in well tubing comprising a main plug body which seats in a seating nipple forming part of the tubing, a pressure gauge in communication with the tubing below the main plug body, and means for equalizing the tubing pressure |
| 3965178 |
Method for preparing tetrabutylammonium bromide |
June 22, 1976 |
| Tetrabutylammonium bromide is prepared buy mixing n-butylbromide with tributylamine in acetonitrile, in an inert atmosphere, under reflux conditions for a sufficient period of time to form a solution containing tetrabutylammonium bromide, cooling the resulting solution; mixing the so |
| 3965045 |
Iron catalyst |
June 22, 1976 |
| An improved iron catalyst is provided which is useful in catalytically synthesizing hydrocarbons from carbon monoxide and hydrogen. The catalyst comprises a calcined and reduced mixture of magnetite and alumina derived from water hydrolysis of aluminum alkoxides wherein at least 70 wt % |
| 3964993 |
Removal of HF from the sludge resulting from the treatment of a hydrocarbon |
June 22, 1976 |
| A process for removing HF (hydrogen fluoride) from the sludge resulting from the HF treatment of a hydrocarbon is disclosed. The process comprises concurrently treating the sludge with aqueous caustic and a liquid aromatic hydrocarbon. |
| 3962509 |
Waterproof paperboard and method for producing same |
June 8, 1976 |
| Waterproof corrugated paperboard and other paper constructions and a process for producing such waterproof paperboard by impregnating paperboard with a mixture containing from about 10 to about 50 weight percent tung oil and from about 90 to about 50 weight percent paraffin wax and c |
| 3962196 |
Technique for reducing polymer deposit during polymerization in aqueous dispersion |
June 8, 1976 |
| Polymer deposit or build-up on the interior surfaces of a polymerization vessel during polymerization of monoethylenically unsaturated monomers in aqueous dispersion may be inhibited by adding certain heterocyclic compounds to the dispersion prior to polymerization. |
| 3962124 |
Oxidation stabilized organic compositions |
June 8, 1976 |
| The use of a condensation reaction product of (1) meta-cresol, para-cresol or a mixture of meta and para cresols, and (2) an aldehyde defined by R-CHO wherein R is hydrogen or an alkyl group having at least 1 carbon atom as an antioxidant in organic compositions. |
| 3962099 |
Water base drilling mud composition |
June 8, 1976 |
| An improved water base drilling mud composition wherein calcium ions are controlled and converted to water-insoluble plant nutrient compounds by the use of monocalcium phosphate compounds, said composition comprising an aqueous suspension containing from about 5 to 35 pounds per barrel o |
| 3961972 |
High strength silicate form and method for producing same |
June 8, 1976 |
| A silicate foam composition having improved strength is produced using a particular combination of ingredients comprising an alkali metal silicate, a filler material, a cementing agent, a vinyl chloride telomer having an average molecular weight from about 600-1,000, a gelling agent, and |
| 3961772 |
Control system for positioning extensible pipeline system |
June 8, 1976 |
| A control system for use in controlling the positioning of a continuous hydraulic pipeline system of extensible type. The system includes automatic control apparatus responsive to pipeline or hydraulic transport position sensing apparatus which functions to maintain the pipeline appa |
| 3960704 |
Manufacture of isotropic delayed petroleum coke |
June 1, 1976 |
| Isotropic petroleum coke is produced by air blowing a petroleum residuum to produce a delayed coking feedstock having a particular softening point and then coking said air-blown residuum with or without diluent under delayed coking conditions. |
| 3959323 |
Oil soluble mercury compound for an analytical standard |
May 25, 1976 |
| A stable oil-soluble metal carboxylate composition for use as an analytical standard for metal-in-oil analysis is provided. The composition is an equilibrium product represented as follows: ##EQU1## WHEREIN M is a metal selected from the group consisting of mercury, vanadium, iro |
| 3958216 |
Two-wire multiplex seismic recording system |
May 18, 1976 |
| Apparatus for interconnection of seismic receivers using a two-wire connection and utilizing frequency diversification to maintain separation of received energy from each of the individual seismic receivers. Each seismic receiver is used in combination with a local oscillator having an |
| 3956359 |
Alkylidenedithiobisphenols |
May 11, 1976 |
| Compounds having the general formula: ##EQU1## where R is an alkyl radical substituted by a radical selected from the class consisting of alkoxy, carbonyl and ester radicals. The compounds are useful for reducing blood cholesterol in warm-blooded animals. |
| 3955624 |
Safety valve for controlling flow in a flow conductor |
May 11, 1976 |
| Well tools comprising a go-devil actuated well safety valve, a locking assembly for releasably locking the safety valve at a desired depth in a well, running and pulling tools for installing and removing the safety valve, a go-devil ball for closing the safety valve, and apparatus for |
| 3955593 |
Conveyor for flexible slurry hose |
May 11, 1976 |
| A conveyor for a flexible slurry hose of the type carried on a plurality of wheel-supported carts interconnected by an articulated linkage. The conveyor provides guidance and track means for transporting the carts and hose through a 180.degree. turn by lifting the wheels from the ground |
| 3954798 |
Process for preparing phosphorotriamidothioates |
May 4, 1976 |
| A process is disclosed for preparing novel compounds represented by the formula ##EQU1## wherein R is a C.sub.10 -C.sub.100 alkylene group, R' is a C.sub.1 -C.sub.5 alkylene group, n is an integer of 1 to 4, X is NH.sub.2, NHR", or NR"R", and Y is NH.sub.2, NHR", NR"R", or haloge |
| 3954664 |
Addition polymerization process |
May 4, 1976 |
| A polymerization catalyst consisting of a cupric salt, a copper chelating agent, and a cyanide salt is disclosed for polymerizing vinyl monomers. Such a catalyst system is less hazardous than are the persulfate and peroxide catalysts; the molecular weight of the polymer is higher under |
| 3954660 |
Anionic surfactant slurry having increased viscosity and method of providing said slurry |
May 4, 1976 |
| The viscosity of anionic surfactant slurries is increased by admixing with such slurries an effective amount of a viscosity increasing additive selected from the group consisting of dialkyl ethers wherein the alkyl radicals of said ethers contain from 2 to 5 carbon atoms, alkoxyethox |
| 3952803 |
Oil recovery method using overbased waterflood additive containing sulfonates derived from alkyl |
April 27, 1976 |
| An improved anionic overbased waterflood additive comprises a base component, a first sulfonate component derived from an alkylation reaction product employing a branched-chain alkene as the alkylating agent, and a second sulfonate component derived from an alkylation reaction product |
| 3951854 |
Stabilized analytical standards |
April 20, 1976 |
| This invention is directed to stabilization of analytic standards comprising (a) an oil-soluble metal sulfonate wherein said metal is selected from the group consisting of molybdenum, vanadium, iron, boron, beryllium, tin, silver, copper, magnesium, or mixtures thereof, (b) a normall |
| 3951824 |
Dry drilling fluid composition |
April 20, 1976 |
| A dry powdered drilling fluid composition and method of use thereof prepared by mixing together under conditions of high shear a major portion of water and a minor portion of a hydrophobic silica. |
| 3949593 |
Diffusion monitoring apparatus |
April 13, 1976 |
| Apparatus for connecting the open end of an elongated hollow probe member to a chamber whereby the interiors of the probe member and the chamber can be evacuated while the probe member and chamber are disconnected from each other and then the probe member sealingly connected to the chamb |
| 3949353 |
Underground mine surveillance system |
April 6, 1976 |
| A system for maintaining a continuous log of activity in and around an underground mine wherein seismic energy in the area is continually monitored, processed and classified into meaningful relative data indications; and which system further includes selectively deployable seismic en |
| 3949220 |
Method for detecting and locating sand producing zones in friable, unconsolidated sandstone form |
April 6, 1976 |
| A method for locating and identifying sand producing zones in friable, unconsolidated sandstone formations of a subterranean reservoir traversed by a well bore. The method comprises the following steps:A. introducing into said reservoir through said well bore, a radioactive material whic |
| 3948055 |
Method for controlling stress and increasing the strength of support members in coal mines |
April 6, 1976 |
| A method for controlling stress and increasing the load-bearing strength of support members, the support members comprising coal, of a coal mine wherein the method consists essentially of injecting ammonia or hydrochloric acid into the interior portions of the support members. |
| 3942841 |
Slurry handling system |
March 9, 1976 |
| An underground, improved slurry transportation system consists of a first and second vertical cavity. Both cavities have a vent means to the surface of the earth. Slurry input means from a plurality of mine faces communicates with the upper portion of the first vertical cavity and sl |
| 3942546 |
Corrosion monitoring and composition-analytical apparatus |
March 9, 1976 |
| A simple apparatus and process for monitoring a selected component of a fluid system are provided wherein the apparatus comprises a simple diffusion probe, an electronic pumping means and a reading means whereby the diffusion and pumping rate are read directly as electrical current. |
| 3941820 |
Predominantly aliphatic hydrocarbon materials from carbonaceous solids |
March 2, 1976 |
| Predominantly aliphatic hydrocarbon materials may be obtained from carbonaceous solids by a sequence of steps comprising gasifying the carbonaceous solids, combining the gasification product stream with an internal recycle stream, separating certain impurities from the combined strea |
| 3940612 |
Method for detecting and locating water-producing zones and/or water thief zones in subterranean |
February 24, 1976 |
| A method for locating water-producing zones and/or water thief zones in a subterranean formation penetrated by a well bore comprising the sequential steps of:A. injecting into said formation an aqueous solution containing from about 0.01 to 7.5 weight percent of an irradiated water solub |
| 3940184 |
Methods and systems for hydraulically transporting solids |
February 24, 1976 |
| Methods and systems for forming a particulated solids-carrier liquid slurry and transporting it through a conduit are provided wherein a continuous stream of carrier liquid is flowed into a sump, particulated solids to be transported are introduced into the sump so that a pumpable solids |
| 3939912 |
Method for reducing the production of water from oil wells |
February 24, 1976 |
| A method for reducing the production of water from oil wells by injecting into the oil wells a viscous oil containing from about 0.01 to about 10 weight percent of a coupling agent in an amount sufficient to saturate the subterranean formations penetrated by the wellbore radially for dis |
| 3938600 |
Hydraulic mining nozzle-air lift device |
February 17, 1976 |
| A hydraulic nozzle device for removing soil from the interior and below a hollow structure. |
| 3937788 |
Treatment of gases containing sulfur dioxide |
February 10, 1976 |
| An improvement in wet regenerative SO.sub.2 scrubbing systems using a sulfite-forming additive wherein a thiosulfate-rich aqueous solution is used to prevent oxidation of sulfite to sulfate, to serve as a source of the sulfite-forming additive, and also to increase the salt concentration |
| 3937787 |
Treatment of gases containing sulfur dioxide |
February 10, 1976 |
| An improvement in regenerative SO.sub.2 scrubbing systems which use sodium, potassium or ammonium carbonate to react with the SO.sub.2 to form sulfite, wherein a thiosulfate-rich aqueous solution of the carbonate is used to prevent oxidation of the sulfite to sulfate; to serve both as a |
| 3937728 |
Low-temperature synthesis of urea |
February 10, 1976 |
| Urea is produced by reacting phosgene and ammonia, one of the reactants being in the liquid state and the other gaseous, at -50.degree. to -20.degree.C. |
| 3937520 |
In situ mining using bacteria |
February 10, 1976 |
| Mineral values are recovered in situ by generating a leaching agent in the formation containing the mineral to be recovered. |
| 3936318 |
Electrical energy storage battery means |
February 3, 1976 |
| An improved electrical energy storage battery is provided having a case, at least two porous electrolyte containers positioned within the case, a solid hydrogel positioned within the case and between the electrolyte containers, the hydrogel containing an effective amount of an electron |
| 3935632 |
Method of preparing an insulated negative buoyancy flow line |
February 3, 1976 |
| Method of preparing an insulated negative buoyancy conduit wherein a jacket is placed around the conduit and an insulating material comprising a porous filler and a resin-forming composition is positioned in the annulus between the jacket and the conduit. |
| 3933685 |
Method for producing catalyst impregnated alumina extrudates |
January 20, 1976 |
| An improvement in a method for producing alpha alumina monohydrate extrudates by mixing acid, water, and alpha alumina monohydrate to form an extrudable mixture; extruding the mixture to produce green alpha alumina monohydrate extrudates and drying the green extrudates, wherein the i |
| 3933514 |
High strength, water resistant silicate foam |
January 20, 1976 |
| An alkali metal silicate foam composition comprising preferably sodium silicate, cementing agent such as sodium silicofluoride, gelling agent such as linoleic acid and filler such as glass fiber mixed with water and blowing agent to provide foams having high strength, high water resistan |
| 3933201 |
Method using overbased branched-chain alkylaromatic sulfonates as waterflood additives |
January 20, 1976 |
| An improved anionic waterflood additive is prepared by alkylating an aromatic hydrocarbon such as benzene with a branched-chain alkene having about 10 to about 35 carbon atoms such as a propylene tetramer dimerization reaction product in the presence of an alkylation catalyst such as |
| 3932552 |
Integrated process for producing C.sub.2 hydrocarbons from carbon monoxide and hydrogen |
January 13, 1976 |
| C.sub.2 hydrocarbons may be produced from carbon monoxide and hydrogen using an integrated process scheme involving reacting carbon monoxide and hydrogen to produce a hydrocarbon effluent containing hydrogen and subsequently hydropyrolyzing said effluent and recovering C.sub.2 hydroc |
