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| Number | Title | Issue Date |
| 4740569 | Arylene sulfide polymer, contacted with polyhaloaromatic compound A process for the production and use of branched polymers of arylene sulfide in which (A) a reaction mixture of (1) at least one p-dihalo-benzene, (2) at least one alkali metal sulfide, (3) at least one organic amide, (4) water in an amount of about 1.0 m... | 04/26/1988 |
| 4709755 | Heat exchanger In a shell and tube heat exchanger, cooperation between a shell and shroud within the shell is established by at least one boss extending radially outward from the exterior surface of the shroud and at least one channel on the inside of the shell. The cha... | 12/01/1987 |
| 4707402 | Formation of laminated structures by selective dielectric heating of bonding film Multiple materials are bonded together by means of an RF-sensitized bonding film or sheet, wherein the RF-sensitized bonding film or sheet is inserted at an intermediate position adjacent to the multiple materials to be bonded, and exposed to a dielectric... | 11/17/1987 |
| 4705766 | Mixture of a molybdenum carboxylate and a molybdenum dithiophosphate or a molybdenum dithiocarbamate for use in a hydrovisbreaking process A decomposable molybdenum compound selected from the group consisting of a mixture of a molybdenum dithiophosphate and a molybdenum carboxylate and a mixture of a molybdenum dithiocarbamate and a molybdenum carboxylate is disclosed. The decomposable molyb... | 11/10/1987 |
| 4705769 | Composition of matter for conversion of C3 and C4 hydrocarbons Compositions of matter comprise oxides of silicon, aluminum and/or titanium mixed with combinations of manganese oxide and magnesium oxide; iron oxide and magnesium oxide; calcium, strontium, barium, tin and/or antimony oxides, manganese oxide and magnesi... | 11/10/1987 |
| 4705772 | Composition of matter and method for conversion of C3 and C4 hydrocarbons Novel compositions of matter include: mixed oxides of (a) at least one oxide of chromium, at least one oxide of manganese and at least one oxide of magnesium, Lanthanum Series Metals, preferably lanthanum and cerium, and/or niobium; (b) at least one oxide... | 11/10/1987 |
| 4703081 | Poly(arylene sulfide) resin ternary blends A ternary polymer alloy containing a poly(arylene sulfide), a poly(amide imide), and at least one of a poly(aryl ketone) and a poly(aryl sulfone). The polymer alloy optionally can contain a fibrous reinforcing material such as a glass fiber.... | 10/27/1987 |
| 4698080 | Feed control for cryogenic gas plant Overloading of a plurality of turbine drivers driving compressors in a plurality of compression cycles, such as the compression of refrigerants and the compression of normally gaseous feed in a method for cryogenically cooling such normally gaseous feed, ... | 10/06/1987 |
| 4687639 | Apparatus for accommodating temperature and pressure variations in tubular conduits An improved universal expansion joint having counterthrust means for controlling pressure-induced expansion. Movable bellows means in the form of one or more expansible bellows or one or more contractile fluid power cylinders are disclosed for applying co... | 08/18/1987 |
| 4687867 | Metallotetradecadiene compounds Process for the production of the insect sex attractant, gossyplure, is provided. The process comprises first disproportionating 1,5-cyclooctadiene and 1-hexene to give 1,5,9-tetradecatriene, then metallating the triene to form a 1-metallo-5,9-tetradecadi... | 08/18/1987 |
| 4681854 | Geochemical oil prospecting method using in situ simulation of diagenetic processes A process for in situ simulation of diagenetic processes in a subterranean formation is provided. A mineral substrate is placed in the formation of interest in a sealed vessel. The vessel is opened so as to expose the mineral substrate to formation fluids... | 07/21/1987 |
| 4681743 | Catalytic cracking apparatus A catalytic cracking apparatus comprises a catalyst lift pot having a first diameter, a riser-reactor having a mouth connected to the lift pot and defining a second diameter which is smaller than the first diameter, and a plug member which axially extends... | 07/21/1987 |
| 4681266 | Method of particulating agglomerated catalyst materials A method for producing particles having a controlled particle size from agglomerated material is provided. Agglomerated material is passed through a beater mill and subjected simultaneously to the beating action of a plurality of blades and a vigorous str... | 07/21/1987 |
| 4679579 | Method and apparatus for controlling the pressure of gases flowing through a conduit Method and apparatus for the control of velocity and pressure of hot gases flowing through a conduit wherein generally spherically shaped objects of refractory material are disposed within such conduit during the operation thereof to provide a constrictio... | 07/14/1987 |
| 4675099 | Flowing catalyst particles in annular stream around a plug in lift pot Catalyst/oil mixing in a catalytic cracking unit can be effected at approximately right angles by introducing the liquid oil axially into the mouth of the riser and bringing the catalyst radially inwardly into the mouth of the riser from substantially the... | 06/23/1987 |
| 4671908 | Extrusion control process and apparatus In an extrusion process, desired product quality parameters are maintained very accurately by manipulating the rotational speed of the screw associated with the extrusion process so as to maintain a desired ratio of feed rate to drag flow in the extrusion... | 06/09/1987 |
| 4668461 | Polymers and rotationally molding same A composition that can be rotationally molded with a minimum formation of voids comprises a polymer and a metal stearate.... | 05/26/1987 |
| 4668296 | Alkylation of diphenyl oxide An alkylated diphenyloxide composition is prepared by reacting diphenyloxide with isobutylene in the presence of sulfuric acid and applications for the composition.... | 05/26/1987 |
| 4666650 | Method and apparatus for molding hollow articles A method of rotationally molding hollow articles from cross-linkable polymeric material wherein the mold and molding material are simultaneously revolved about two nonparallel axes while being heated to fuse and cross-link polymeric material. When the pol... | 05/19/1987 |
| 4664863 | Heat resistant process gas line A method of forming a heat resistant gas transfer line. The line includes a metal outer shell, a tubular inner liner formed of a plurality of prefired refractory rings joined together by shiplap joints having expansion gaps, and an intermediate liner incl... | 05/12/1987 |
| 4661935 | Seismic data processing A variable amplitude/phase color seismic display is provided which increases the ease with which interpreters can locate peaks, troughs and other information of interest.... | 04/28/1987 |
| 4659521 | Method for condensing a gas in a liquid medium A method for condensing a gas in a liquid medium to prevent the formation of gas hammer, comprising impinging a gas against a plate at such a velocity so as to cause the gas to fan out in a thin sheet before condensing in the liquid medium.... | 04/21/1987 |
| 4659594 | Composition and method for corrosion inhibition A composition is provided which, when applied to a metal surface, forms a corrosion-inhibiting film thereon. The composition comprises an epoxy resin, an effective amount of a curing agent for the epoxy resin, an onium salt, and a hydrocarbon diluent. The... | 04/21/1987 |
| 4655277 | Process control for parallel heat exchangers For parallel heat exchangers, one using a more preferred heat exchange medium as a heat exchange source and another using a less preferred heat exchange medium, maximum use of the more preferred heat exchange medium is used prior to use of the less prefer... | 04/07/1987 |
| 4654801 | Control of a vinyl acetate process An integrated control system for a vinyl acetate process. A desired production rate of vinyl acetate is achieved by maintaining a desired reactor temperature. At the same time, the concentration of oxygen in the vinyl acetate reactor and condenser are max... | 03/31/1987 |
| 4652342 | Retorting process using an anti-bridging mechanical agitator A process for the destructive distillation of hydrocarbonaceous solids in a retort, wherein a viscous bridging zone comprising viscous liquids in intimate contact with solids, which tends to impede the flow of vaporized hydrocarbons and the flow of solid ... | 03/24/1987 |
| 4652546 | Hydrogel derived catalyst of zinc titanate and alumina promoted with cobalt and molybdenum for hydrodesulfurization or hydrodenitrogenation The catalytic hydrodesulfurization and/or hydrodenitrogenation of an organic sulfur compound and/or an organic nitrogen compound is carried out in the presence of a hydrogel derived catalyst comprising zinc titanate and alumina promoted with cobalt and mo... | 03/24/1987 |
| 4649386 | Data acquisition In a system in which a continuous, periodically repeated, pulse duration type signal is utilized to transmit information to a computer, the pulse duration type signal is converted into a series of clock pulses. The clock pulses are then counted for a peri... | 03/10/1987 |
| 4648063 | Programming a peripheral computer In a system wherein a peripheral computer is utilized to lighten the load on a central computer or to perform a special function which cannot be performed by the central computer, method and apparatus is provided whereby the central computer can be utiliz... | 03/03/1987 |
| 4644073 | Permeability contrast correction employing a sulfate-free propionate-sequestered chromium (III) solution A sulfate-free clear green solution of chromium(III) propionate is prepared by mixing aqueous propionic acid containing up to 55 weight percent propionic acid with a chromium(VI) oxidant, such as a dichromate or chromate, and a sulfur-containing reductant... | 02/17/1987 |
| 4644024 | Pentadienyl chloride derived polymers Polymers containing repeat units based on substituted or unsubstituted pentadienyl chloride monomers are disclosed. The polymers are fast curing and some of the polymers are self-curing.... | 02/17/1987 |
| 4642766 | Method and means of control for multi-source feedstock distribution system including optimization of supplies A multi-source feedstock distribution system is controlled by an optimization so as to substantially minimize the total cost of the feed while also meeting set points for flow rate and composition to feedstock users supplied by the multi-source feedstock ... | 02/10/1987 |
| 4640789 | Ore flotation and flotation agents for use therein Ammonium dialkylaminoalkyl (thiocarbonyldithio) alkanoates, alkali metal dialkylaminoalkyl (thiocarbonyldithio) alkanoates, their use as flotation agents, and a process for the production of these novel compositions are disclosed. N,N-dialkylaminoalkyl me... | 02/03/1987 |
| 4639986 | Filament jet entangler A filament jet entangler comprising a supporting bracket and a jet insert mounted thereon, the jet insert including a cylindrical yarn confining passage extending therethrough and intersected by a pair of coplanar fluid jet ports whose axes intersect at t... | 02/03/1987 |
| 4636371 | Removal of sulfur oxides from fluid streams The removal of sulfur oxide (particularly sulfur dioxide) from a fluid stream, such as the tail gas from a sulfur process, is accomplished by contacting such fluid stream with a catalyst composition comprising zinc titanate and a promoter in the presence ... | 01/13/1987 |
| 4635533 | Method and apparatus for accommodating temperature and pressure variations in tubular conduits An improved universal expansion joint having counterthrust means for controlling pressure-induced expansion. Movable bellows means in the form of one or more expansible bellows or one or more contractile fluid power cylinders are disclosed for applying co... | 01/13/1987 |
| 4636572 | Permeability contrast correction employing propionate-sequestered chromium(III) prepared by nitrite/dichromate redox A process for preparing clear green chromium(III) propionate solutions which comprises admixing such as propionic acid with water, a chromium(VI) source such as dichromate, adding thereto a nitrite, such as sodium nitrite, to reduce the chromium(VI) to ch... | 01/13/1987 |
| 4635707 | Method for varying shell fluid flow in shell and tube heat exchanger In a conventional shell-tube heat exchanger with at least one annular distributor, apparatus and method are provided for minimizing pressure drop in the fluid passing through the shell side, by adjusting rotationally and longitudinally the position of at ... | 01/13/1987 |
| 4628013 | Photoelectrochemical cell A photoelectrochemical cell is provided having an amorphous silicon electrode. A system employing a V+3 /V+2 redox system is described which enables the amorphous silicon electrode to function as the cathode, reducing the rate of pho... | 12/09/1986 |
| 4628034 | Control of a polymerization reaction A desired unreacted monomer concentration is maintained in the reaction effluent removed from a polymerization reactor by manipulating the catalyst feed rate to the polymerization reactor.... | 12/09/1986 |
