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Patent # Description
US-4,543,044 Constant-flow-rate dual-unit pump
A dual-unit pump, e.g., a rolling diaphragm piston pump, suitable for pumping an abrasive high-viscosity slurry, is adapted to operate at a constant flow rate by...
US-4,542,681 Mine ventilation line curtain extender
A supporting structure by which the line curtain in a mine ventilation system can be extended in a cantilevered fashion from the last permanent roof support...
US-4,542,179 Acrylic sequential graft copolymer-styrene-acrylonitrile copolymer blends
The addition of styrene-acrylonitrile copolymer to acrylic core-shell thermoplastic elastomers reduces mold shrinkage and improves surface hardness. The...
US-4,541,916 Coal liquefaction process using low grade crude oil
A process for converting coal to liquid hydrocarbonaceous products involving a liquefaction reaction in the presence of a coal derived recycle slurry and a...
US-4,541,836 Fuel compositions
A phase-stable aqueous gasoline/ethanol fuel composition containing an additional alcohol selected from the group consisting of n-butanol, 2-butanol,...
US-4,541,483 Method for stimulation of oil and gas wells with phosphate ester surfactants
Crude oil and gas production wells, which no longer produce oil or gas utilizing conventional primary and secondary means of recovery, can be returned to...
US-4,541,377 Piston dome
An improved dome-shaped piston head is disclosed characterized by a plurality of channels, depressions, and recesses which enhance the flow of an air-fuel...
US-4,540,943 Belt-supported swingable metal detector
A portable metal detector of the treasure finder type, comprises a shaft on the forward end of which is a conventional detector head. Intermediate the length of...
US-4,540,712 Process for producing methanol from synthesis gas
This invention relates to the manufacture of methanol directly from the liquid phase reaction of hydrogen and carbon monoxide, by a homogeneous catalytic process...
US-4,540,552 Process for the removal of acid gases from a gas mixture
A process for the removal of acid gases which are reactive with ethylene oxide from a gas mixture containing carbon dioxide, comprises contacting the gas mixture...
US-4,540,405 Disposable syringe sleeve
A disposable plastic syringe sleeve (2) is disclosed. The syringe sleeve (2) is adapted to receive the body (42) of a conventional glass hypodermic syringe (40),...
US-4,539,435 Interactive educational system with voice reaction and access using tone-generating telephone
This invention relates to an automated educational system in which a remote student or subject can be interrogated by a central automated interrogation system,...
US-4,539,387 Process for polymerizing formaldehyde
A diquaternary ammonium compound, especially a diquaternary ammonium diacetate in which at least one substituent of nitrogen atom is an alkyl group having at...
US-4,539,352 Injection-moldable thermoplastic polyester composition
Improved injection moldability of polyethylene terephthalates is achieved by the addition of an epoxidized plasticizer and a nucleating agent cooperative with...
US-4,539,158 Liquid diphenylmethane diisocyanate compositions
The present invention is directed to a process for the preparation of a stable, liquid adduct comprising reacting a mixture of 1,3-butane diol and neopentyl...
US-4,539,157 Liquid diphenylmethane diisocyanate compositions
The present invention is directed to a process for the preparation of a stable, liquid adduct comprising reacting a mixture of neopentyl glycol and propylene...
US-4,539,156 Liquid diphenylmethane diisocyanate compositions
The present invention is directed to a process for the preparation of a stable, liquid adduct comprising reacting a mixture of 1,3-butane diol and propylene...
US-4,538,941 Rock duster apparatus
A venturi section positioned in the flow path of pressurized air through a rock dust hopper includes an opening connected to a conduit extending to the axis of...
US-RE31,975 Polyester compositions
The disclosure of this application is directed to unsaturated polyester compositions, containing as a low-profile additive a carboxyl containing thermoplastic...
US-4,536,541 High impact resistant polyamide
High impact resistant polyamide resins containing an amorphous polyamide and dispersed particles of a toughener containing grafted succinic anhydride groups. The...
US-4,535,988 Football goal post with explosive-type souvenir projector
A football goal post assembly of standard dimensions in which one or both vertical posts are of hollow construction for receiving a plurality of disc-type...
US-4,535,808 Check valve
A check valve particularly useful for water well applications. The valve components are positioned at the low pressure, downstream side of a flexible poppet. A...
US-4,535,187 Preparation of isophorone and mesityl oxide from acetone
The aldol condensation of acetone to isophorone and mesityl oxides in high conversions and efficiencies is achieved by a catalyst comprising a calcined calcium...
US-4,535,143 Process for the preparation of copolycarbonates of sulfonyl diphenol
The present invention is directed to a continuous process for the preparation of copolycarbonates of sulfonyl diphenol (SDP) containing at least about 15,...
US-4,534,945 Stabilization of high purity hydrogen peroxide
An aqueous 25% to 35% solution of hydrogen peroxide with a residue on evaporation of 20 mg/l or less are stabilized against decomposition by a maximum of 1.4...
US-4,534,129 Plant support
A plant support in which a wire loop plant support is adjustably supported in cantelever fashion from a post at fixed positions on the post by a post coupling...
US-4,533,679 Reinforced polyester composition having an improved strength
The present invention is directed to a thermoplastic molding composition comprising a high molecular weight polyester, a reinforcing amount of a reinforcing...
US-4,532,311 Process for reducing sheeting during polymerization of alpha-olefins
A process for reducing sheeting during production of polyolefins by polymerization of alpha-olefins utilizing titanium based polymerization catalysts wherein the...
US-4,532,106 Mechanically alloyed dispersion strengthened aluminum-lithium alloy
A dispersion-strengthened aluminum-base alloy system is provided which is prepared by mechanical alloying and is characterized by high strength, high elastic...
US-4,531,481 Rotary cylinder diesel engine
A rotary 2-cycle diesel engine has five circumferentially spaced cylindrical combustion chambers orbiting in one direction for engagement with four spherical...
US-4,530,981 Process for making tetrafluoroethylene fine powder
Tetrafluoroethylene fine powder resins are made by adjusting temperature during polymerization wherein: (a) at the beginning of the polymerization the temperature is...
US-4,529,781 Process for the suspension polymerization of tetrafluoroethylene
In the suspension polymerization of tetrafluoroethylene to make granular polymers, presence of a selected salt of a perfluorinated nonanoate enhances desirable...
US-4,529,112 Carrier for fishing rods and tackle
A carrier for fishing rods and tackle to be worn by a fisherman comprises a carrier plate worn adjacent the hip on one side of the fisherman and supported by a...
US-4,528,566 Transmitter and receiver locating device
A directional locating device transmits pulsed RF signals at a stabilized frequency and is carried by an object the direction of which is to be determined from a...
US-4,528,405 Aldol condensation of enolizable aldehydes using a metal carboxylate catalyst
A process is disclosed for the aldol condensation of enolizable aldehydes to alpha, beta-unsaturated aldehydes, at high selectivities, employing a metal...
US-4,528,334 Carboxylated poly(oxyalkylenes)
Graft copolymers are obtained which are substantially free of insoluble homopolymers by grafting 3 to 15 percent by weight of acrylic acid onto poly(oxyalkylene)...
US-4,527,536 Bow string release device
A bow release including a handle rotatably connected to a head frame having a pair of jaws with an open position for releasing the bow string and a closed...
US-4,527,412 Method for making a necked container
A method and apparatus for making a necked container are disclosed wherein a sheet material is formed into a generally cylindrical tubular member and the...
US-4,527,001 Small olefin interconversions
The process for the interconversion of "small olefins" selected from the class consisting of ethylene, propylene, butenes and mixtures thereof comprising...
US-4,526,777 Pharmaceutical combination composition and associated method
A novel combination pharmaceutical composition is described, together with a method for making the same, wherein the pharmaceutically active ingredients are...
US-4,526,723 Biocidal enol esters of non-ortho substituted 2-aryl-1-3-cycloalkanedione compounds
Non-ortho substituted 2-aryl-1,3-cycloalkanedione enol ester compounds exhibit outstanding acaricidal and herbicidal activity.
US-4,525,575 Polyester polyols and mixtures made therefrom
The present invention is directed to a polyester polyol having an hydroxyl number of from about 25 to about 130 and an acid number of 2 or less, produced by...
US-4,525,498 Polyester fiber reinforced molding compounds
Polyester fiber reinforced molding compounds containing low profile additives afford moldings with improved surface appearance by the addition of epoxy compounds...
US-4,525,357 Derivatives of bicyclic 2-iminothiazolidine oximes
Novel derivatives of bicyclic 2-iminothiazolidine oximes and methods of preparing same. This invention is also directed to an insecticidal composition comprising...
US-4,524,796 Sliding-gate valve for use with abrasive materials
The invention is a flow and pressure-sealing valve for use with abrasive solids. The valve embodies special features which provide for long, reliable operating...
US-D279,402 Combined stand and container for storing and dispensing gasoline or the like
US-4,524,271 Laser blocking shutter
There is disclosed herein a shutter particularly useful in blocking laser energy, such as for an Nd:YAG laser used for laser surgery. The shutter includes a...
US-4,524,236 Process for oxydehydrogenation of ethane to ethylene
A process for the low temperature oxydehydrogenation of ethane to ethylene uses a calcined oxide catalyst containing Mo, V, Nb, Sb, and at least one metal from a...
US-4,524,234 Production of hydrocarbons with aluminophosphate molecular sieves
The process for the production of hydrocarbons from a feedstock comprising compounds of the formula R--X wherein X is a moiety containing at least one of...
US-4,524,179 Polyphenylene ether compositions having improved processability
Compositions comprising polyphenylene ether resins and high impact polystyrene resins exhibit improved processability and reduced adhesion to heated metal...
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