Prototech Company

Walter Juda Associates, Inc.

Other

Ayr-King Corporation

Hy9 Corporation

Walter Juda

Robert J Allen

Charles W Krueger

Robert W Lindstrom

R Todd Bombard

Amiram Bar-Ilan

Donald E King

Amiran Bar-Ilan

Amiram B Ilan

Novel methods of air-oxidizing a molten alkali hydroxide at least partially to superoxide state and then reversing the reaction to obtain nitrogen-free oxygen, and then regenerating the molten hydroxide for repeated use, providing for the generating of concentrated oxygen from air.

Methods of generating oxygen from air via an alkali superoxide

An generator of pure pressurized high pressure hydrogen comprising a molten hydroxide or eutectic mixture electrolyte pressurizing chamber bounded by a hydrogen-selective anode and a hydrogen-selective otherwise gas impermeable cathode respectively connected to a D.C. power supply, with the pressurizing chamber maintained at a temperature between the melting point of the electrolyte and about 600&#xb0; C., wherein, upon passing D.C. current between the anode and cathode, pure hydrogen arriving on the electrolyte bounding with the anode substantially instantaneously reacts with hydroxyl ions from the electrolyte to form water and electrons and evolves pressurized pure hydrogen gas on the cathode, and with such substantially instantaneous reaction at the anode creating a suction effect which effectively pumps pure hydrogen permeating through said anode.

Electrochemical pressurizer/purifier of hydrogen for operation at moderately elevated temperatures (including high-temperature electrochemical pump in a membrane generator of hydrogen)

A novel method of producing an improved thin hydrogen-selective palladium-alloy membrane, through solid-solid interdiffusion of thin films or layers of palladium and a palladium-enhancing metal, such as copper, subjected in the presence of a reducing agent, such as hydrogen, to an elevated temperature below the melting point of both metals, for a sufficient time to effect substantially complete interdiffusion of the metals.

Method of producing thin palladium-copper and the like, palladium alloy membranes by solid-solid metallic interdiffusion, and improved membrane

A novel method and apparatus for one-step linking of membrane permeation of hydrogen to the generation by steam reforming of a methanol-like fuel that comprises bounding a longitudinal flow path of a methanol reformate stream comprising hydrogen, steam and the oxides of carbon and methanol, by a thin palladium-bearing membrane; promoting turbulence in the flow to cause a predominant amount, but not all, of the hydrogen in the stream transversely to permeate the membrane as substantially pure hydrogen passing transversely into a region external to the bounding membrane, thereby simultaneously generating and permeating the hydrogen; and maintaining the hydrogen in the external region at least at atmospheric pressure, but at a lower pressure than the partial pressure of the residual hydrogen in the resulting depleted reformate.

Method of linking membrane purification of hydrogen to its generation by steam reforming of a methanol-like fuel

A new method of creating thin free-standing pin hole-free hydrogen-selective palladium-bearing membranes that comprises thinning cold-rolled membranes by chemical etching or electrochemically electrolyzing of at least one membrane surface, and novel membranes produced thereby and including membranes with selected portions only thereof so thinned.

Method of fabricating thinned free-standing metallic hydrogen-selective

A hydrogen-selective thin Pd/40% Cu membrane as for use as a wall connecting high and low pressure chambers of a hydrogen generator, comprising the foil having its edge area diffusion-bonded to a copper-surfaced metallic frame; and a method of preparing the same.

Diffusion-bonded palladium-copper alloy framed membrane for pure

A smoke abatement assembly is provided as an adjunct overlaying a cooking device such as a broiler or fryer system in a commercial restaurant. The smoke abatement assembly comprises a sealed housing which supports a low-pressure flame arrester, between 1 and 10 inches above the cooking area of the cooking device. A catalyst module is also removably mounted within the sealed housing above the flame arrester. The module includes a plurality of spaced low-pressure oxidation catalysts of controlled thickness, between 1 and 6 inches thick. The plurality of catalysts have a combined thickness equal to the thickness of a single catalyst providing the optimum catalyst volume or contact time for the installation. Each of the components, that is the flame arrester and plurality of catalysts, defines a smoke access area substantially equal to the cooking area of the broiler or fryer. A preheater can be provided to maintain the temperature at the catalysts at an optimum range during idle conditions when no cooking is occurring.

Catalytic assembly for cooking smoke abatement

This invention is concerned with lithium hydride as an anode component in an aqueous alkaline battery.

Lithium hydride anode for use in alkaline batteries

This invention is concerned with catalytic gas-diffusion structures such as electrodes and barriers comprising, as an integral part of a portion thereof, a non-ionic aqueous gel such as a polyvinyl alcohol, rendering said electrode impervious to gas percolation, while retaining electrolyte contact with the structures; and with methods of using said electrodes or barriers in a variety of electrochemical systems including electrolysis cells, fuel cells, batteries and others, as well as in metal-recovery systems involving no electricity.

Polymeric hydrogel-containing gas diffusion electrodes and methods of

This disclosure relates primarily to the recovery of hydrogen-reduced metals from aqueous solutions of salts thereof, such as, for example, copper from copper sulphate solution, by hydrogen reduction at a catalytic barrier made pervious to the solution, in an apparatus provided with means to supply hydrogen along a face of said barrier at which the aqueous solution is applied to effect deposition thereupon and flowing the solution transversely through the barrier to continue deposition upon the other face of the barrier.

Method of recovering hydrogen-reduced metals, ions and the like at

This disclosure is concerned with electrowinning massive zinc with hydrogen anodes and with critical concentration ranges of Zn++ in the electrolyte and of free sulphuric acid, adjusted for optimum energy considerations.

Process for electrowinning of massive zinc with hydrogen anodes

This disclosure concerns primarily the recovery of hydrogen-reduced metals from aqueous solutions of salts thereof, by hydrogen reduction at a porous hydrophobic catalytic barrier, at ordinary temperatures, in an apparatus provided with means to supply hydrogen to one face and aqueous solution to the other face of said barrier.

Process for the recovery of hydrogen-reduced metals, ions and the like

This disclosure is concerned with thin gas diffusion electrodes comprising an open pore carbon cloth substrate provided with a uniform mixture of catalytic carbon particles and preferably Teflon particles adhered within the cloth poes and to the yarns of the cloth; processes for making and using the same; and assemblies comprising said electrodes and closely spaced preferably noble metal current collecting contacts for use in electrochemical cells operating at high current densities.

Thin carbon-cloth-based electrocatalytic gas diffusion electrodes, and

This disclosure is concerned with improved thin gas diffusion electrodes comprising open pore carbon cloth substrates provided with a uniform mixture of catalytic carbon particles and preferably Teflon particles adhered within the cloth pores and to the yarns of the cloth, formed into an electrode assembly with a plurality of closely spaced preferably noble metal current collecting contacts throughout the area of the cloth and connected to external terminals for use in electrochemical cells, including metal-air batteries and zinc electro-winning cells and the like, operating at high current densities.

Growing community of inventors

Lexington, MA, United States of America

Walter Juda