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4297147 |
Method for decoking fired heater tubes
Method of decoking furnace tubes using a turbulent stream of impact resistant, particle-enriched gas. Non-angular, non-abrasive particles are entrained at a concentration of about 0.1 to about 10...
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4287002 |
Nuclear reactor decontamination
Heat transfer and associated surfaces in nuclear reactors are decontaminated by treating the surface with ozone to oxidize acid-insoluble metal oxides to a more soluble state, removing oxidized...
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4279384 |
Steam generation in a dishwasher
A dishwasher comprising a dishwashing tub, a liquid circulation pump, and an immersion heater disposed at a lower section of the dishwashing tub. The immersion heater is covered by a heater cover...
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4277289 |
Process for removing titaniferous and silico-aluminous incrustations from surfaces
A process for cleaning the walls of heat exchangers or reactors which are covered with essentially titaniferous incrustations but which can also contain silico-aluminous incrustations formed during...
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4273086 |
Device and method for freeing frozen engine cylinders
The subject invention constitutes an uncomplicated, inexpensive means of loosening "frozen" cylinders under certain conditions in an internal combustion engine, by applying pressure to the piston...
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4267013 |
Method for dry-etching aluminum and aluminum alloys
A method for dry-etching Al and Al alloys is disclosed, which comprises producing plasma discharges with a mixed gas comprising boron trichloride and freon and/or oxygen incorporated therein and...
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4264374 |
Cleaning process for p-type silicon surface
A cleaning process for a silicon surface, especially a p-type silicon surface. The surface is exposed to HF/H 2 O fumes, thereby obtaining a hexafluosilicic acid film on the surface. The exposed...
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4263053 |
Method for cleaning and drying hollow fibers
The removal of manufacturing oils from a pre-potted, wound bundle of hollow fibers used in dialysis equipment, is rapidly accomplished by subjecting the fiber assembly to centrifugal forces acting...
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4261759 |
Method of treating water damaged floor coverings
A water damaged carpet and pad assembly are restored to their normal condition while substantially maintained in an installed, normal floor covering position by extracting excess water from the...
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4260425 |
Phosphorus removal from surface regions of phosphosilicate glass microcircuit layers
A method for reducing the phosphorus concentration in exposed surface areas of a phosphosilicate glass microcircuit layer to reduce the corrosivity of the layer. The method comprises a two step...
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4260426 |
Environmental filters
A filter apparatus having multiple filter medias for use in environmental control, food processing and other industrial applications, is provided with movable filter media separators that maintain...
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4257820 |
Method for removing the rubber lining from a rubber-lined vessel
A method for removing the rubber lining from rubber-lined vessels. A pool of solvent is maintained in the bottom of the vessel and heated to produce vapors which will penetrate the rubber lining...
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4247342 |
Method and composition for removing ethylene glycol terephthalate oligomer deposits and dyestuff residue from textile dyeing equipment
Ethylene glycol terephthalate oligomer deposits and dyestuff residue are removed from textile dyeing equipment by contacting the deposits and residue with an aqueous composition at a temperature of...
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4233174 |
Quick-break cleaning compositions
A cleaning composition which comprises: (a) from 35 to 80 wt % of one or both of a fatty alcohol ethoxylate (having from 8 to 18 carbon atoms in the alcohol moiety and from 2 to 10 moles ethylene...
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4226642 |
System providing for decontamination washing and/or biocidal treatment
Methods and apparatus providing for decontamination washing and/or biocidal treatment of articles, including washing and sterilizing of surgical instruments in a single chamber, are disclosed. Air...
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4209399 |
Process for the working up and regeneration of wash waters containing ammonium
A process for regenerating an ammonium, heavy metal salts, ammonium nitrate nd organic substances containing wash water resulting from the production of a hydrated oxide of an actinide which...
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4208221 |
Stator core stripping
A stator comprising a core, wire and hydrolyzable insulation is contacted with steam under conditions of elevated pressure and temperature for a time sufficient to degrade the insulation whereupon...
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4205624 |
Method and equipment for sanitizing animal soiled rubber bedding material
This specification discloses a procedure and facilities for removing animal excretions from rubber particles used as stall bedding material for animals, such as horses. The procedure involves...
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4193818 |
Combined ultrasonic cleaning and biocidal treatment in a single pressure vessel
Method and apparatus are provided for ultrasonic cleaning and decontaminating, disinfecting, or sterilizing articles, such as surgical instruments, in a single piece of equipment. Energy...
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4192692 |
Process for removing layers of selenium
A layer of selenium is removed from a metal base by contacting the layer with a fluid which contains an amine or a mercaptan at a temperature in the range between about 60° and 150° C. and then...
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4191588 |
Method of cleaning fouled heat exchangers and other equipment
Heat exchangers and other equipment whose surfaces have become fouled with sludge deposits that comprise a cuprous halide are cleaned by contacting the fouled surfaces of the equipment with a...
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4191591 |
Method and apparatus for cleaning a matrix of a magnetic separator
A method and apparatus is disclosed for cleaning magnetic material attracted to a ferromagnetic matrix within a separating chamber of a magnetic separator. The magnetic material retained by the...
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4183146 |
Process for simultaneously drying mechanical wood pulp and improving mechanical strength and brightness of the pulp
Disclosed is a process for simultaneously drying mechanical wood pulp and improving the mechanical strength and brightness of the wood pulp by mixing mechanical wood pulp with an aqueous solution...
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4181621 |
Cleaning agents for dentures
Disclosed is a cleaning agent for dentures, commonly in the form of powder or tablets, which is characterized by a content of at least 30% by weight urea based on the total composition. Said...
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4170489 |
Process for cleaning jet engine nozzles
A process is provided for cleaning residue fuel varnish and carbon from the fuel nozzles and guide vanes of a jet engine. The process involves dispensing a detergent and water solution under...
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4169807 |
Novel solvent drying agent
Mixtures of 1-propanol, water and certain perfluoro compounds form excellent drying agents for silicon based devices. The mixtures have good wetting properties and form azeotropic mixtures in the...
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4168989 |
Stripping composition for thermoset resins and method of repairing electrical apparatus
A stripper composition for thermoset resins is disclosed which comprises about 1 to about 99% of an aromatic compound which has a boiling point over 180° C. and is a phenol or a primary or...
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4166305 |
Device for washing machine parts
A device for washing machine parts, e.g. balls or rolls for roller bearings, having finely finished spherical or cylindrical outer surfaces, in connection with the manufacture thereof. The machine...
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4156619 |
Process for cleaning semi-conductor discs
Semi-conductor discs are cleaned, after being subjected to a polishing operation, by immersing the discs in a solution of about 30-100% by weight non-ionic or anionic surfactant and thereafter...
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4154624 |
Apparatus and method for cleaning containers
A cleaning machine for containers, especially bottles, which includes an endless transporting system for transporting containers to be cleaned through the machine, and which also includes a water...
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4152173 |
Method and apparatus for treating surfaces of an article with a fluid adapted to coat, clean or react chemically with the article
Apparatus for treating open-mouthed cylindrical containers with a fluid adapted to coat, clean or react chemically with the surface of the containers, comprises a turret fitted with pot assemblies...
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4143702 |
Reverse flow heat exchangers
A heat exchanger wherein the hot and cold sides are arranged in side-by-side relationship, both sides being connected to a reactor by properly valved pipes, and means providing for a forward flow...
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4135947 |
Method of cleaning surfaces with CO.sub.2 -neutralized amine compositions
Organic coatings or deposits are removed from a surface, such as an oven surface, by applying to the coating an aqueous composition containing a primary or secondary amine neutralized with an...
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4132567 |
Apparatus for and method of cleaning and removing static charges from substrates
Wafers are cleaned in the manufacture of integrated circuits by revolving the wafers successively through a spray of deionized water and drying nitrogen gas in a closed chamber, and introducing...
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4131483 |
Methods for cleaning articles with upward flowing liquids
Synthetic resin articles to be printed, plated or coated are cleaned prior thereto by carrying the articles into a cleaning zone where they are contacted with an aqueous detergent solution which is...
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4127423 |
Contact lens cleaning solution
Silicone and/or hydrophilic soft contact lenses are freed of proteinaceous and other deposits by rubbing them with an aqueous solution of a crystalline sodium silicate having a pH of 10.2 - 10.9...
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4119437 |
Method for removing Y.sub.2 O.sub.3 or Sm.sub.2 O.sub.3 cores from castings
A weakly acid solution of either NH 4 NO 3 , NH 4 Cl, NH 4 HSO 4 , CH 3 COOH or equimolar CH 3 COOH -- CH 3 COONa is employed to remove cores of either Y 2 O 3 or Sm 2 O 3 from castings...
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4116762 |
Porous felt web conditioning system
A felt conditioning system is disclosed for use in connection with paper-making apparatus wherein an endless belt of absorbent felt is pressed at a station along the path of belt motion, into...
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4115148 |
Method for preventing corrosion of a sulfur dioxide regenerating apparatus
Corrosion of an SO 2 regeneration apparatus is prevented upon suspending its operation by introducing an inert gas into the apparatus to produce an air concentration of not more than 5% by volume...
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4097306 |
Method of cleaning swarf
Cutting fluid residues are removed from swarf such as turnings, borings, mill scale, grinding sludge, and the like, by washing the swarf with an aqueous detergent solution so as to emulsify the...
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4091826 |
Method for degreasing rolling mill scale
Rolling mill scale to be degreased is weighed, thoroughly mixed with from 10 to 20% by weight of a solvent e.g. a fluorized chlorohydrocarbon, while finely distributing the grease in the thus...
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4092175 |
Method of removing paper adhered to a surface
Paper adhered to a surface with a starch-based adhesive is removed by mixing together (1) an enzyme composition containing a carbohydrase or a carbohydrase and a pratease, (2) a liquid composition...
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4089704 |
Removal of RTV silicon rubber encapsulants
Disclosed is a method of removing silicone rubber encapsulating material from micro-electronic circuits. The encapsulant is broken down molecularly and removed by a solution of tetramethyl-ammonium...
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4079522 |
Apparatus and method for cleaning and drying semiconductors
A semiconductor wafer is cleansed of loose foreign surface matter and chemical impurities near the surface in an apparatus which passes superheated steam over the wafer. Condensate is permitted to...
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4076554 |
Apparatus and method for displaying the cost of operation of a commercial dishwashing machine
A cost monitoring system for a dishwashing operation is disclosed. The pumps and/or valves through which the water flows in a dishwashing operation are monitored. Monitoring devices provide outputs...
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4073663 |
Method and apparatus for automatic bacteriological cleaning and disinfection of objects
For automatic bacteriological cleaning and disinfection of objects there is provided a series of treatment compartments which can be closed individually. The objects are fed sequentially into the...
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4072539 |
Method of cleaning raw ore
A method of cleaning a raw ore product such as coal is disclosed wherein the ore product temperature is increased up to about 200°-212° F. before water is separated therefrom whereby the moisture...
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4070204 |
Low-energy dishwasher
A method of cleaning dishes, utilizing a dishwasher apparatus connected to both hot and cold-water lines, the method includes: beginning with one or more cold-water pre-rinses, then providing a...
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4067773 |
Enzyme-containing article for removing paper adhered to a surface
A two component article of manufacture useful for removing paper adhered to a surface with a starch-based adhesive comprising a sealed moisture-proof first package containing an enzyme composition...
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4064636 |
Apparatus for delinting cottonseed
Cotton seed is delinted in a continuous system wherein dilute acid is sprayed onto a moving agitated horizontal column of seed while controlling the weight ratio of dilute acid to seed and then the...
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