Patents Issued in August 9, 1988
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Patent number: 4762513Abstract: A reconfigurable walking toy which may be operated by turning a control knob which activates a gear mechanism within the toy used to move the leg members of the toy in order to simulate a walking action. The toy has two leg members, each having upper and lower leg members. The two upper leg members are rotatably engaged to a hollow body. Each of the two lower leg members is rotatably engaged to one of the upper leg members. The toy is supported by foot members which rotatably engage the bottom ends of the lower leg members. The gear mechanism features two sector gears which are rotatably mounted to the hollow body of the toy. The sector gears are driven by a pinion gear attached to a gear shaft. A control knob is used to rotate the shaft. Rotation of the knob back and forth causes one leg member to stride forward followed by the other leg member, simulating a walking movement of the toy.Type: GrantFiled: July 3, 1986Date of Patent: August 9, 1988Assignee: Mattel, Inc.Inventors: Terence A. Choy, Harold A. Hartleben, Jaime Serna
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Patent number: 4762514Abstract: A method of making a beverage packaging bag made of at least one laminar panel which has an inner layer and an outer layer with appropriate portions of the laminar panel bonded and thus sealed together by heating and a plurality of cuts provided in the outer layer to facilitate piercing of a straw through the panel, by directing a laser beam through a mask at the bag.Type: GrantFiled: August 12, 1987Date of Patent: August 9, 1988Assignee: Fujimori Kogyo Co., Ltd.Inventor: Tokio Yoshida, deceased
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Patent number: 4762515Abstract: In pistol grip medicament implanter devices, wherein a trigger coupled to a plunger causes plunger advance movement that expels the medicament from the device when the trigger is pulled, a spring that forms part of the coupling and a lost motion arrangement controlled by the spring that converts trigger pull movement into spring take-up of the trigger movement when the plunger encounters resistance to advance movement greater than the spring bias. The trigger continues to move but the plunger does not, then when resistance to movement of the plunger becomes less than the spring bias, the spring force serves to advance the plunger, recovering the trigger pull motion previously lost.The greatest force that can be applied by the plunger to the medicament implant has become whatever bias is selected for the spring.Type: GrantFiled: January 6, 1987Date of Patent: August 9, 1988Assignee: Ivy Laboratories, Inc.Inventor: C. Louis Grimm
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Patent number: 4762516Abstract: An assembly of a needle and a device for protecting the needle tip is disclosed. The assembly comprises an elongate housing which mounts the needle. A needle guard is slidably mounted within the housing and is adapted to be moved forward along the needle. Following use, the needle and housing are retracted and the needle guard permanently locks with the housing while it occludes or covers the needle.Type: GrantFiled: March 5, 1987Date of Patent: August 9, 1988Assignee: Luther Medical Products, Inc.Inventors: Ronald B. Luther, Pradip V. Choksi
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Patent number: 4762517Abstract: A subcutaneously-implanted infusion device that has a portal defining an inner reservoir chamber that allows communication between a septum and an end of a catheter tube connected to the portal. The septum is mounted in a compressed state within a main housing of the portal by a pressure-insert element that is formed against the septum by an arbor press. The septum is then held in its compressed state via a retaining ring cooperating with an annular groove provided in the interior surface of the main housing directly adjacent the lower end of the portal. The device also includes a lower suture-attaching cuff having a skirt portion, with a low profile angle, which is provided with a plurality of separate, spaced-apart, suture-reinforcing tabs. The pressure-insert element is provided with a through-hole for the passage of a catheter with an enlarged abutment stop at one end for preventing passage of the catheter through the through-hole.Type: GrantFiled: September 18, 1986Date of Patent: August 9, 1988Assignee: Healthcare Technologies, Inc.Inventors: Jeffrey A. McIntyre, Timothy P. Cadieux
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Patent number: 4762518Abstract: The principal of total internal reflection is utilized in sounding an alarm in a medical fluid infusion system when a downstream blockage occurs. A miniature prism is mounted in a cavity in a rigid exterior tube. The infusing fluid flows in a plastic tubing along the central channel of the rigid tube. The plastic tubing in the interior of this exterior rigid tube is diametrically expansive with an unpressurized outside diameter which is less than the inside diameter of said rigid exterior tube. A light source and light detector is positioned adjacent to the equilateral planes of the prism mounted in the rigid tube.Type: GrantFiled: August 1, 1986Date of Patent: August 9, 1988Assignee: Pancretec, Inc.Inventor: Stephen J. Kreinick
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Patent number: 4762519Abstract: An apparatus, for placing a feeding tube in the stomach of the human or animal body, has:a hollow needle, which is surrounded by a sleeve, for providing an opening in the abdominal wall and the stomach wall and for bringing the sleeve into the opening:the tube, which has a first draw member at its one end:and a thread-like second draw member, which may be introduced through the sleeve, for drawing the tube from the cavity of the stomach into the opening. The connection between the first and the second draw members can be produced inside the stomach. This is achieved in that the second draw member has an expandable loop at its inner end and the first draw member has a coupling element which may pass through the loop and be held fast by contraction of the loop.Type: GrantFiled: August 18, 1987Date of Patent: August 9, 1988Assignee: Erintrud FrimbergerInventor: Eckart Frimberger
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Patent number: 4762520Abstract: An absorbent article such as a sanitary napkin or a diaper comprises an absorption body (9) accommodated in a casing (11). The casing is composed of a carded fiber fabric made in one piece and containing at least 5% of melt fibers, preferably polypropylene, sub-divided into parallel streaks (1, 3, 4, 5, 6) having different melt-bonded patterns. There are thus provided streaks of varying structures which are adapted to their individual positioning in relation to the absorption body (9). The casing (11) seals around the absorption body (9) with at least two layers (6, 2) on the side of the absorption body facing the user, the outermost layer (2) having a substantially tighter bonding pattern than the inner, loosely bonded and voluminous layer(s).Type: GrantFiled: January 16, 1987Date of Patent: August 9, 1988Assignee: Molnlycke ABInventor: Leif Wallstrom
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Patent number: 4762521Abstract: The present invention provides a distinctive absorbent garment which comprises a backsheet having waistband portions at each longitudinal end thereof, and intermediate portion interconnecting the waistband portions, and marginal portions along each lateral side edge of the backsheet. A liquid permeable liner sheet is located in facing relation with the backsheet, and an absorbent body is located between the backsheet and liner sheet. The absorbent body delimits waistband sections at each longitudinal end thereof, delimits an intermediate section interconnecting the waistband sections, and delimits a marginal contour at each lateral side edge of the absorbent body. Each marginal side contour has at least one collapsible notch section formed therein. A fastening mechanism is connected to the garment for securing the garment on a wearer.Type: GrantFiled: April 11, 1986Date of Patent: August 9, 1988Assignee: Kimberly-Clark CorporationInventors: Thomas H. Roessler, Dan D. Endres, Kenneth M. Enloe, Andrew E. Huntoon, Mary E. Lippert
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Patent number: 4762522Abstract: A hide or pelt processing agent suitable for use in leather treating compositions comprising a N-alkyl-heterocyclic amide having C.sub.6 to C.sub.18 alkyl substitution on the hetero-nitrogen atom; such as, for example N-octyl-2-pyrrolidone, N-dodecyl-2-pyrrolidone, N-cocoalkyl-2-pyrrolidone and N-tallowalkyl-2-pyrrolidone, employed in an amount between about 0.01 and about 20% by weight based on the total composition of a standard leather treating solution, suspension or emulsion.The present composition containing one or more of the N-heterocyclic amides can be applied in various curing, tanning and finishing stages of leather treatment to produce processed hides and pelts of improved dyeability, flexibility and moisture content.Type: GrantFiled: March 2, 1987Date of Patent: August 9, 1988Assignee: GAF CorporationInventor: Marilyn J. Maue
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Patent number: 4762523Abstract: Permanently non-dusting pigment and dye preparations, which contain as dedusting agents,(a) a surface-active substance in an amount of from 0.Type: GrantFiled: August 1, 1985Date of Patent: August 9, 1988Assignee: Dr. Hans Heubach Gmbh & Co. KGInventors: Manfred Gawol, Gerhard Adrian
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Patent number: 4762524Abstract: This invention is directed to a dyestuff composition comprising the reaction product of a water-soluble, vinyl-sulfone type, reactive dye and a N-alkyl-amino-alkyl sulfonic acid and/or carboxylic acid or the salts thereof wherein the N-alkyl-amino-alkyl acid or salt is reacted with said dye in an amount of about 0.5 to 1.0 mole per mole of dye. This dyestuff composition is used to dye synthetic polyamides according to a process where said composition is applied to a polyamide fiber from an aqueous solution having a pH from about 3 to about 4; preferably 3.5 and then fixed to said fiber by heat.Type: GrantFiled: February 5, 1987Date of Patent: August 9, 1988Assignee: Hoechst Celanese CorporationInventors: Thomas V. Chambers, Manfred Deicke, Suzanne C. Fleming
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Patent number: 4762525Abstract: An improved prepackaged, inexpensive firebox for sale at retail stores for use in outdoor cooking on consumer supplied backyard grills or for use as a quick campsite campfire starter firebox or as a prepackaged firewood firebox for fireplaces or the like. The repackaged firebox is lightweight, portable, manageably sized for easy storage, semi-fire retardant, water repellant and completely fire consumable and can be used conveniently and safely by a novice consumer. The firebox is comprised of a specially designed cardboard container and a special arrangement of prepackaged layer combustible with kindling points varying sufficiently to ignite and maintain ignited a primary combustible layer such as hardwood mesquite logs found in the southwestern United States.Type: GrantFiled: June 15, 1987Date of Patent: August 9, 1988Inventor: William P. Wood
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Patent number: 4762526Abstract: Disclosed is a process for deashing coal, which comprises the following steps (a) to (e):(a) crushing coal to form crushed coal having a particle size distribution of 0.05 to 15 mm and an average particle size of 0.5 to 2 mm,(b) producing an aqueous slurry comprising the crushed coal, 1 to 4 wt.Type: GrantFiled: August 26, 1986Date of Patent: August 9, 1988Assignees: The Tokyo Electric Power Co., Inc., Mitsui Engineering & Shipbuilding Co., Ltd., Mitsui & Co., Ltd.Inventors: Taiichi Funaji, Haruo Iso, Jisaku Tanimichi, Kenichi Nagata, Toshiaki Murata, Hideto Mitsui
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Patent number: 4762527Abstract: An improved pumpable fuel composition is provided comprising in major proportion a particulate solid fuel and in minor proportion sewage sludge, the improvement wherein said sewage sludge comprises from about 90 to 98 percent by weight of water and which sewage sludge has been subjected to heat treatment at a temperature in the range of from about 150.degree. to 500.degree. F. and subjected to pressures sufficient to both maintain the water content of the heat treated sewage sludge within the range of from about 90 to 98 percent by weight and to effect a lower viscosity for the sewage sludge upon return of the sewage sludge to ambient conditions. A method for the production of the improved fuel composition is also provided.Type: GrantFiled: December 16, 1986Date of Patent: August 9, 1988Assignee: Electric Fuels CorporationInventors: David G. Beshore, Vincent M. Giampa
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Patent number: 4762528Abstract: Coal is gasified to produce carbon monoxide which is converted to carbon by a reverse Boudouard reaction2CO.fwdarw.CO.sub.2 +CThe carbon dioxide is recycled and reacted with coal to create more carbon monoxide by the Boudouard reactionCO.sub.2 +C.fwdarw.2COThe resulting carbon is recovered and mixed with a liquid to form a liquid slurry of particulate carbon which is useful as a liquid fuel. The liquid may be water or hydrocarbonaceous liquids. The process optimizes recovery of carbon from coal in a usable form, substantially free of sulfur, hydrogen, ash and nitrogen.Type: GrantFiled: September 5, 1986Date of Patent: August 9, 1988Inventor: Eric H. Reichl
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Patent number: 4762529Abstract: A novel fuel composition containing the alcohol-soluble portion of the product obtained as a result of the mild reaction of a lignin-containing material with nitric acid and a component selected from the group consisting of water, methanol, ethanol mixtures thereof, mixtures of lower alcohols and hydrocarbon fuel.Type: GrantFiled: January 16, 1987Date of Patent: August 9, 1988Inventor: Johann G. Schulz
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Patent number: 4762530Abstract: An internal air regulator in a venturi tube assembly for use with a burner in a gas barbecue grill. The venturi tube assembly includes two telescoping tubes both with lateral openings. The tube which telescopes into the other has an internal air shutter for orientation with the lateral openings. This arrangement offers for added adjustment of the venturi assembly when it is placed between a control housing with a nozzle and a burner yet allows for air regulation. In a preferred embodiment, an attachment member extends from the tube with the air shutter to secure the venturi tube assembly to a gas nozzle.Type: GrantFiled: May 1, 1987Date of Patent: August 9, 1988Assignee: Modern Home Products Corp.Inventor: Walter Koziol
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Patent number: 4762531Abstract: Disclosed is a method for regulating the pressure of a gas produced in a reactor and withdrawn from the reactor continuously by means of a gas compressor lying in a gas withdrawal path, to a substantially constant pressure value in the reactor, in which a first setting member influencing the gas withdrawal rate through the gas withdrawal path is controlled in dependence upon the pressure of the gas in the reactor by way of a first regulating section, characterized in that in dependence upon the pressure of the gas in the reactor moreover by way of a second regulating section a second setting member which influences the gas return rate in a gas return path connecting the gas withdrawal path downstream of the gas compressor with the gas withdrawal path upstream of the gas compressor or with the reactor is controlled, the controlling of the second setting member taking place with less inertia than the controlling of the first setting member.Type: GrantFiled: February 12, 1987Date of Patent: August 9, 1988Assignee: SKW Trostberg AktiengesellschaftInventors: Reinhard Kischel, Josef Salzinger, Richard Schottner
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Patent number: 4762532Abstract: This invention relates to a two-fluid nozzle which is adjustable to provide a substantially constant mixing energy. Adjustment of the two-fluid nozzle is made in accordance with the pressure and mass flow values of the liquid and gas fed to the nozzle. A microprocessor calculates the mixing energy from these values and provides an output to the nozzle to adjust it should its mixing energy be in variance with a pre-selected mixing energy.Type: GrantFiled: July 10, 1987Date of Patent: August 9, 1988Assignee: The Dow Chemical CompanyInventor: Charles W. Lipp
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Patent number: 4762533Abstract: A flat type resinoid grinding wheel, which comprises abrasive grains and phenol resin bond, contains inorganic substance particles in the abrasive grains. The particles are almost the same as the abrasive grains in size but are lower than the abrasive grains in hardness value. Furthermore, the porosity of the grinding wheel is limited to 15% or less.Type: GrantFiled: November 18, 1986Date of Patent: August 9, 1988Assignee: Daichiku Co., Ltd.Inventor: Kunimasa Oide
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Patent number: 4762534Abstract: A method of producing a magnetic disk by lapping a magnetic disk medium, comprising the steps of:preparing a lapping tape having an abrasive particle layer provided with abrasive particle clusters and chip pockets formed between adjacent two clusters, each of said clusters having abrasive particles of Al.sub.2 O.sub.3 or SiC and abrasive particles of diamond,lapping the surface of said magnetic disk medium by using the thus prepared lapping tape.Type: GrantFiled: November 26, 1986Date of Patent: August 9, 1988Assignee: Hitachi, Ltd.Inventors: Yasushi Ito, Masaaki Imamura, Yoshiki Kato, Jun Fumioka
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Patent number: 4762535Abstract: The present invention is a process for separating ammonia from mixtures of other gases or from aqueous streams. The ammonia-containing mixture is contacted with a membrane containing, as the active component, a salt having the structural formula: NR.sub.4.sup.+ X.sup.-, wherein each R is independently H or a straight chain or branched alkyl group and X.sup.- is an organic or inorganic anion. The membrane is useful for the selective permeation of ammonia from mixtures of gases containing ammonia, nitrogen and hydrogen.Type: GrantFiled: June 2, 1987Date of Patent: August 9, 1988Assignee: Air Products and Chemicals, Inc.Inventors: Guido P. Pez, Daniel V. Laciak
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Patent number: 4762536Abstract: The adsorber for cleaning gases comprises an adsorbent packing which is formed of a number of adsorbent layers and fiber layers disposed in alternating contiguous relation. The adsorber is particularly suitable for removing oil aerosols which are present in a very low concentration in the gas passing through the adsorber. The adsorber layers may be made of a molecular sieve material or activated carbon. The fiber layers may be made of cotton wadding or glass wadding or spun rayon.Type: GrantFiled: October 14, 1986Date of Patent: August 9, 1988Assignee: Sulzer Brothers LimitedInventor: Werner Purtschert
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Patent number: 4762537Abstract: A composite HCl adsorbent comprising about 50-95 wt % alumina and about 5-50 wt % Y zeolite wherein the molar ratio of SiO.sub.2 to Al.sub.2 O.sub.3 is about 4.5-6.0. The adsorbent is produced by admixing particles of alumina and acid-treated Y zeolite, agglomerating, aging and activating. The activated composite adsorbent has improved dynamic adsorption behavior for HCl compared with both the alumina and Y zeolite starting materials.Type: GrantFiled: June 2, 1987Date of Patent: August 9, 1988Assignee: Aluminum Company of AmericaInventors: Hubert L. Fleming, Kenneth P. Goodboy, Emmanuel K. Saforo
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Patent number: 4762538Abstract: A spray absorber in which a rotary sprayer is centrally disposed adjacent to the top is provided with a cover cap which is adapted to be raised and is laterally pivotally movable and adapted to close the shaft opening for the rotary sprayer when the latter must be replaced without an interruption of the gas flow.Type: GrantFiled: August 6, 1987Date of Patent: August 9, 1988Assignee: Metallgesellschaft AGInventors: Wilhelm Michler, Hans W. Both, Rolf Keppler
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Patent number: 4762539Abstract: A universal/scrubber/precipitator comprises at least one, or a plurality of rolls or circular cylinders concentric and rotatable in one direction about their common axis. The rolls are perforate with perforations less each in span than the span supported by the surface tension of the liquid in a liquid bath in which the drums are partially immersed. Each roll has a plurality of cups at least one each 180 degrees about the roll, extending from one axial end to the other. The rolls are sealed at their ends to prevent leakage of smoke, and also at the top of a main deceleration chamber having a plurality of deceleration chambers and a plurality of deflectors, and a condensation chamber.Type: GrantFiled: October 30, 1986Date of Patent: August 9, 1988Inventor: Rudolph Muto
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Patent number: 4762540Abstract: Noise suppression and particle separation apparatus for flows of high pressure, high velocity, particle-laden, gaseous fluid, such as geothermal steam, comprises a gaseous fluid conduit that has axially installed around its discharge end a larger diameter, cylindrical inner expansion chamber having a number of flow-dividing fluid discharge openings at which fluid flow diffusing elements are connected for receiving and diffusing the flow of gaseous fluid from the apertures. A still-larger diameter, cylindrical noise suppression chamber is axially mounted around the inner chamber and flow diffusing elements. The diffusion elements increase the fluid flow noise frequency range and sound deadening material installed in the outer chamber absorbs noise in this higher frequency range so that the venting fluid noise level outside the apparatus is no more than about 95 dB.Type: GrantFiled: August 27, 1987Date of Patent: August 9, 1988Assignee: Union Oil Company of CaliforniaInventors: David M. Ruiz, Alvin S. Timmons
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Patent number: 4762542Abstract: There is disclosed an improved process for recovering argon from a tail gas stream, preferably a tail gas obtained from a hydrogen recovery unit processing a purge gas obtained in the synthesis of ammonia and comprised of argon, methane, nitrogen, and residual quantities of hydrogen, wherein the tail gas is partially liquefied prior to introduction into a first fractionation column to form a bottoms liquid stream comprised of argon and methane wherein such liquid stream is thereupon introduced into a second fractionation column to separate argon as an overhead gaseous stream which is condensed to form liquid argon or as product.Type: GrantFiled: March 20, 1987Date of Patent: August 9, 1988Assignee: The BOC Group, Inc.Inventors: Vladimir Mishkovsky, Wei S. Hwang, David J. Kamrath
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Patent number: 4762543Abstract: A novel gas processing method is disclosed which is useful in separating and recovering carbon dioxide from gas streams having a high carbon dioxide content (e.g., 85-95 mol percent) and a low hydrocarbon/nitrogen content. The method is particularly useful in processing gas streams produced during carbon dioxide flooding operations for enhanced oil recovery.Type: GrantFiled: March 19, 1987Date of Patent: August 9, 1988Assignee: Amoco CorporationInventors: Leroy A. Pantermuehl, Thomas E. Krisa
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Patent number: 4762544Abstract: A glassware production system includes an electropneumatic individual section glass forming machine having a multiplicity of operating mechanisms for converting a gob of molten glass into a hollow glass container. A glass forehearth feeds molten gobs at controlled temperature and weight to the forming machine. Electronic controllers individually and selectively control parameters of operation of the multiplicity of machine mechanisms and the forehearth. Glassware from the forming machine is inspected for manufacturing faults and for identifying each inspected container with its associated mold of origin. The glassware inspection devices provide fault signals indicative of a plurality of differing types of faults, which are thereafter associated not only with mold or section of origin but also with fault cause.Type: GrantFiled: January 2, 1987Date of Patent: August 9, 1988Assignee: Owens-Illinois Glass Container Inc.Inventor: Richard G. Davey
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Patent number: 4762545Abstract: A soil amendment material and an associated process for the preparation thereof, comprising a water swellable hydrophilic polymer infused with high concentrations of plant nutritive salts. The amendment is prepared by repeated soaking of hydrophilic swellable polymer particles in a solution of nutritive salts in water, followed by heat application to drive off the entrained water, leaving the nutrients entrapped in the polymer particles.Type: GrantFiled: December 1, 1986Date of Patent: August 9, 1988Inventors: Nabil N. Youssef, Gene W. Miller
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Patent number: 4762546Abstract: The present invention teaches novel compositions and techniques for economically producing highly concentrated nitrogen-sulfur suspension fertilizers using cheap and readily available by-product ammonium sulfate or by-product sulfuric acid and ammonia in conjunction with solid, liquid, or suspension nitrogen fertilizers and suspending clay. The products of the instant invention exhibit unique and very desirable physical properties and long-term storage characteristics not heretofore encountered in suspensions containing soluble fertilizer salts. Some of these unique characteristics include virtually no crystal growth during exceptionally long storage periods and near-constant or decreasing viscosity with decrease in temperature.Type: GrantFiled: April 13, 1987Date of Patent: August 9, 1988Assignee: Tennessee Valley AuthorityInventor: Jeffrey L. Boles
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Patent number: 4762547Abstract: A biocide is enhanced in the effect by applying an esterase to a plant stem, leaves or an insect in advance to or together with the application of the biocide. The esterase decomposes the waxy outer layers of plants and insects.Type: GrantFiled: January 3, 1986Date of Patent: August 9, 1988Assignee: Kao CorporationInventors: Tetsuji Iwasaki, Yuichi Hioki
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Patent number: 4762548Abstract: Herbicidally active thiolcarbamates are employed in combination with a certain amide extender compound, the latter in sufficient quantity to minimize soil degradation and to prolong the soil life of the former. As a result, the herbicidal effectiveness of the thiolcarbamate herbicide is significantly enhanced and prolonged, rendering a single application or multiple applications of the herbicide effective over a longer period of time. Such herbicidal compositions can optionally contain a non-phytotoxic antidotally effective amount of thiolcarbamate herbicide antidote.Type: GrantFiled: August 12, 1985Date of Patent: August 9, 1988Assignee: Stauffer Chemical Co.Inventors: Reed A. Gray, Ferenc M. Pallos
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Patent number: 4762549Abstract: The disclosure describes compositions and methods for improved delivery of plant growth regulators comprising contacting a plant with a composition comprising an effective amount of a plant growth regulator and an effective delivery enhancing amount of compound having the structural formula ##STR1## wherein R' is H or a lower alkyl group having 1-4 carbon atoms, m is 3-7, n is 0-17 and R is --CH.sub.3, ##STR2## where R" is H or halogen, with the proviso that if m is 3 and R is CH.sub.3, then n is 5-17.Type: GrantFiled: April 11, 1983Date of Patent: August 9, 1988Assignee: Nelson Research & Development Co.Inventor: Vithal J. Rajadhyaksha
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Patent number: 4762550Abstract: This invention relates to novel pyrazolesulfonamides, agricultural compositions thereof and the methods of their use as general and/or selective herbicides and/or plant growth regulants.Type: GrantFiled: August 13, 1987Date of Patent: August 9, 1988Assignee: E. I. Du Pont de Nemours and CompanyInventor: Stephen L. Hartzell
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Patent number: 4762551Abstract: A compound of the formula ##STR1## wherein R is halogen, C.sub.1 -C.sub.2 alkyl, C.sub.1 -C.sub.2 alkoxy, nitro; cyano; C.sub.1 -C.sub.2 haloalkyl, or R.sup.a SO.sub.n -- wherein n is 0 or 2 and R.sup.a is C.sub.1 -C.sub.2 alkyl; R.sup.1 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.2 is hydrogen or C.sub.1 -C.sub.4 alkyl; or R.sup.1 and R.sup.2 together are alkylene having 2 to 5 carbon atoms; R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl; or R.sup.3 and R.sup.4 can be oxo; R.sup.5 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.6 is hydrogen or C.sub.1 -C.sub.4 alkyl; or R.sup.5 and R.sup.6 together are alkylene having 2 to 5 carbon atoms; and R.sup.7 and R.sup.8 independently are (1) hydrogen; (2) halogen; (3) C.sub.1 -C.sub.4 alkyl; (4) C.sub.1 -C.sub.4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C.sub.1 -C.sub.4 haloalkyl; (9) R.sup.b SO.sub.n -- wherein n is the integer 0, 1 or 2; and R.sup.b is (a) C.sub.1 -C.sub.4 alkyl; (b) C.sub.1 -C.sub.Type: GrantFiled: June 9, 1986Date of Patent: August 9, 1988Assignee: Stauffer Chemical CompanyInventor: Christopher G. Knudsen
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Patent number: 4762552Abstract: The beneficiation or upgrading of an iron-containing titaniferous ore to a synthetic rutile by subjecting the ore to reduction followed by acid leaching of the reduced ore is improved by forming a mixture of the ore and an aqueous sulfuric acid solution, adding a reducing agent to this mixture and then subjecting this mixture containing the reducing agent to reduction at elevated temperatures. The resulting reduced ore, which is characterized by an increase in the ferrous iron content thereof and an increase in its specific surface area, exhibits an enhanced response to subsequent acid leaching to provide a synthetic rutile of improved purity.Type: GrantFiled: June 15, 1987Date of Patent: August 9, 1988Assignee: Kerr-McGee Chemical CorporationInventors: Roger A. Baldwin, William C. Laughlin, Keshav P. Patel, Patricia J. Shreve
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Patent number: 4762553Abstract: System and method for producing metal or alloy powder are described comprising an electromagnetic levitating coil having an outlet for supporting a molten source of the metal or alloy and controllably discharging a molten stream thereof, an electromagnetic confining coil disposed at the outlet of the levitating coil and surrounding the molten stream for controlling the diameter of the molten stream, and either an atomization die and associated pressurized fluid source for disintergrating the confined molten stream into molten droplets for subsequent cooling to powder, or a controllable electromagnetic coil surrounding the confined molten stream for generating a downwardly and radially outwardly directed electromagnetic force interacting with the molten stream to form the droplets.Type: GrantFiled: April 24, 1987Date of Patent: August 9, 1988Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Steven J. Savage, Daniel Eylon
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Patent number: 4762554Abstract: A method and apparatus for the pyrometallurgical treatment of the environmentally hazardous steel mill flue dust or similar materials recovering the volatile metals from such materials in reduced form and converting the remaining iron into steel and slag. The distilled heavy metals are recovered as alloy by gas-expansion condensing from the top gas.The process reduction is carried out utilizing natural gas as reductant which is bottom injected in an induction furnace in which a furnace burden is formed of green ball pellets or formed as flue dust powders and an electromagnetic induction susceptor to heat the charge.Type: GrantFiled: November 10, 1986Date of Patent: August 9, 1988Inventor: Arturo Lazcano-Navarro
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Patent number: 4762555Abstract: A process for the production of nodular cast iron is disclosed. The process comprises adding magnesium to molten iron and then desulphurizing the melt. Next, the melt is after-treated with a neutral gas. The neutral gas which is introduced into the melt may be Ar, N.sub.2, CO.sub.2, or any combination thereof. The after-treatment with the neutral gas scavenges the melt for nonmetallic inclusions. The after-treatment may be performed by blowing the gas into the melt in a known manner using blowing lances or through a porous plug. In a preferred embodiment, the melt is also carburized by treatment with a gaseous hydrocarbon.Type: GrantFiled: December 22, 1986Date of Patent: August 9, 1988Assignee: Georg Fischer AktiengesellschaftInventors: Ivo Henych, Karl Gut
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Patent number: 4762556Abstract: Gold is selectively extracted from an aqueous solution by contacting the gold-containing solution, which may contain other metals, with a resin which is a diallylamine homopolymer or copolymer, and then separating the resin from the solution.Type: GrantFiled: July 23, 1981Date of Patent: August 9, 1988Assignee: Commonwealth Scientific and Industrial Research OrganizationInventors: Jonathan H. Hodgkin, Robert Eibl
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Patent number: 4762557Abstract: A high temperature, oxidation resistant alloy useful in high temperature, oxidizing environments such as those encountered in gas turbines, advanced jet engines, high temperature furnaces and glass melting and processing equipment, among others.The alloy is characterized by selecting a refractory alloy from the group consisting of molybdenum, tungsten, niobium and tantalum having dispersed therein a second phase additive of titanium nitride and a third phase additive of aluminum and titanium. Alternatively, the refractory metals may be molybdenum or tungsten and the second phase additive and third phase additive may be silicon nitride and silicon, or chromium nitride and chromium respectively.Type: GrantFiled: October 1, 1987Date of Patent: August 9, 1988Assignee: Battelle Memorial InstituteInventors: Vaidyanathan Nagarajan, Ian G. Wright
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Patent number: 4762558Abstract: Reactive sintering process for producing a shaped body containing the nickel aluminide compound Ni.sub.3 Al, which comprises sintering a compacted shaped mass containing an intimate mixture of substances, e.g. including elemental nickel powder and elemental aluminum powder in a stoichiometric atomic ratio generally corresponding to the compound Ni.sub.3 Al, by heating the mass, e.g. in a vacuum, to an elevated sintering temperature, e.g. 500-750.degree. C., sufficiently to initiate an exothermic reaction, and at a heating rate sufficiently for consequent progressive generation of a transient liquid below the melting point of the aluminum powder and at the corresponding eutectic temperature, and upon initiation of the exothermic reaction continuing the sintering sufficiently to form a densified shaped body containing the nickel aluminide compound Ni.sub.Type: GrantFiled: May 15, 1987Date of Patent: August 9, 1988Assignee: Rensselaer Polytechnic InstituteInventors: Randall M. German, Animesh Bose, David Sims
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Patent number: 4762559Abstract: A tungsten-nickel-iron-cobalt high density alloy having unexpected improved strength and hardness properties and the method of making such alloy are disclosed. The alloy has from about 85-98% by weight tungsten with the remainder being a nickel-iron-cobalt binder in which the cobalt is present in amounts of from at least about 5% up to 47.5% by weight of the binder and the amount of cobalt being equal to or less than the amount of nickel. After the powders of the elements in the indicated amounts are homogeneously blended, compacted into a shape and sintered, the sintered shape is subjected to a heat treatment in a flowing argon atmosphere for a period of time and at a temperature at least sufficiently high to solubilize the intermetallic or .mu. phase, Co.sub.7 W.sub.Type: GrantFiled: July 30, 1987Date of Patent: August 9, 1988Assignee: Teledyne Industries, IncorporatedInventors: Thomas W. Penrice, James Bost
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Patent number: 4762560Abstract: A copper colloid containing a minor amount of an ionizable palladium compound for use in activating non-conductive materials for subsequent electroplating.Type: GrantFiled: December 10, 1987Date of Patent: August 9, 1988Assignee: LeaRonal, Inc.Inventor: William R. Brasch
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Patent number: 4762561Abstract: The hardened volume change of concrete, grout, patching material, and water-proof material made from blends of Calcium Sulfate Hemihydrate, Portland Cement and Calcium Aluminate Cement can be reduced by using Portland Cement containing low levels of iron oxide. By lowering the normal level of iron oxide in the Portland Cement used in the above composition, it was also discovered that the compressive strengths dramatically increase as well as the bond to old concrete.Type: GrantFiled: March 24, 1987Date of Patent: August 9, 1988Assignee: Construction Products Research, Inc.Inventors: Edward P. Holub, Richard J. Grabowski
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Patent number: 4762562Abstract: A method of preparing and molding a hydraulic cement-containing composition such as concrete or mortar is disclosed, which can be extensively utilized in the fields of civil engineering, construction projects, or the like. In the preparation of a hydraulic cement-containing composition, cement and water, and sand, gravel or the like, if necessary, are kneaded together to cause the hydration reaction. A feature of the present invention resides in preparing a mortar or the like containing water necessary for the hydration reaction in the form of ice pieces and causing the hydration of cement and water to result from the melting of the ice pieces.Type: GrantFiled: November 9, 1987Date of Patent: August 9, 1988Inventor: Toshiro Suzuki
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Patent number: 4762563Abstract: A thixotropic cement-based paint composition and method wherein the composition is formed by combining Portland cement with presized filter particles having a predetermined relationship by weight to the cement. Water is combined in a volumetric proportion to form an average viscosity of about 3,000 to 8,000 centipoise.Type: GrantFiled: December 29, 1986Date of Patent: August 9, 1988Inventor: Laurence Colin