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4615811 |
Vacuum pump oil recovery process
A novel treatment method for recovering halogenated vacuum pump oils such as chlorotrifluoroethylene, from contaminated filter papers. The process utilizes a trichlorotrifluoroethane (TCTFE)...
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4614549 |
Method for enzymatic cleaning and disinfecting contact lenses
Contact lenses are both cleaned and disinfected in aqueous solutions of proteolytic enzyme in a single-step by heating to a temperature of between 60° and 100° C. The cleaning and disinfecting...
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4613380 |
Method for removing lipid deposits from contact lenses
This invention relates to a method for removing lipid deposits from contact lenses of a polymeric material, particularly contact lenses wherein at least a portion of the polymeric material is an...
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4613378 |
Method of restoring marble and brick surfaces
A marble and brick surface restoring composition comprising a mixture of trisodium phosphate, talc and sugar, which is prepared by dissolving the trisodium phosphate in boiling water to which is...
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4595420 |
Method and apparatus for cleaning and maintaining carpet
The present invention entails a method and apparatus for cleaning and maintaining large areas of low to medium pile carpet, such as is found in hotels, airports, etc. The invention employs a mobile...
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4589926 |
Method and compact machine for treating printed circuit cards
In order to remove impurities from one surface of printed circuit cards which have been subjected in a seperate step to a soldering operation using fluxing agent the invention suggests a method and...
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4576651 |
Treatment of scrap lining material from aluminium reduction cells
A process for treating fluoride-contaminated scrap lining material from electrolytic reduction cells comprises mixing the material with 7-30 parts of sulphuric acid and sufficient water to bring...
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4569695 |
Method of cleaning a photo-mask
A photo-mask to be used in a light exposure step for manufacturing semiconductor devices is cleaned by wetting front and rear surfaces of the mask with a liquid, brushing the wetted surfaces with a...
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4561144 |
Machine for washing flat tableware
The present invention relates to a process for mechanically washing articles of flat tableware, such as plates, saucers or the like, conveyed continuously, said process comprising the steps of...
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4560417 |
Decontamination method for semiconductor wafer handling equipment
Semiconductor wafer handling equipment is cleaned and rinsed in a sealed first chamber. Thereafter, the first chamber is unsealed and the handling equipment is moved into a second chamber so that...
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4547227 |
Method for preparing a steel charge from terneplate scrap metal
A process is disclosed for treating terneplate scrap contaminated with combustibles, such as found in automobile gas tanks, to reduce the alloy content of the scrap to a sufficient level to permit...
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4547401 |
Cleaning of surface of an object
In the cleaning of the surface of an object, such as an automobile, during which the surface is subjected to a detergent and then rinsed with water and dried by beading, an optical brightener is...
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4537640 |
Rinsing of articles to remove an adhering substance
Articles which require the removal of an adhering substance, such as residue of a galvanizing bath, are rinsed by spraying an aqueous rinsing agent against them repeatedly. Each spraying interval...
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4536222 |
Method for removing or retarding paraffin buildup on surfaces in contact with natural gas
A sulfur trioxide-containing fluid, e.g., sulfur trioxide gas, is contacted with the surfaces of equipment in contact with crude oil or natural gas to retard the deposition of paraffins from the...
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4534803 |
Method of cleaning machined surface and chip removing tool
A method of cleaning a machined surface comprises: mounting a chip removing tool having two flow paths for compressed air and cooling water, respectively, on a main spindle of a machining center;...
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4519846 |
Process for washing and drying a semiconductor element
After subjecting a semiconductor element to etching, it must be washed with water and then dried so as to remove any etchant therefrom. In the course of the washing and drying steps, the...
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4512812 |
Method for reducing phosphorous contamination in a vacuum processing chamber
A method for reducing contamination in a vacuum processing chamber includes introducing into the vacuum chamber a gas selected to react with the contaminant and form a compound more volatile than...
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4505836 |
Plastic bottle cleaner composition and method
A process of cleaning a polycarbonate surface or bottle includes (a) washing the surface or bottle with a composition consisting essentially of an aqueous basic solution containing the members:...
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4502893 |
Method for cleaning root crops in the field
A method for cleaning root crops in the field includes steps to harvest the roots and crushing the roots vegetable waste matter whereby the sap from the waste matter is used as part of cleaning...
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4498934 |
Machine and method for cleaning receptacles in a single immersion chamber having a soaking station and a scrubbing station
A method for cleaning dirty objects using cleaning fluid and rinsing fluid and an apparatus using the method. The method has consecutive steps of spraying the surface of a dirty object with high...
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4479503 |
Restoration of stone objects
The restoration of monuments and other objects made of stone is described. The process is carried out by immersing the stone object in deionized water in order to dissolve the calcium sulfate...
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4469526 |
System for removing adhering liquid from objects after a galvanic or chemical surface treatment
Cleaning of objects from adhering liquid surface treating medium after galvanic and/or chemical surface treatment and recovery of the liquid medium is performed by lifting objects treated in a...
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4461653 |
Method for reducing heat loss in a bottle cleaning machine
Heat losses in a bottle cleaning machine are kept to a minimum by recirculating a first liquid from a pre-heating zone, where the bottles are showered with the first liquid, in indirect heat...
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4457323 |
Dishwasher with steam generating heater and cold water input
A dishwasher and dishwashing method which generate steam from the surface of a body of water in the dishwasher tub, without substantial heating of the entire body of water, during at least parts of...
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4443269 |
Tool decontamination method
Disclosed is a system and method for cleaning radioactively contaminated articles, including tools and like items of hardware. The system includes a cleaning chamber for receiving and sealing...
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4439241 |
Cleaning process for internal passages of superalloy airfoils
Residues accumulated during use are removed from the small interior cavities of superalloy airfoils by a process which includes exposing the interior of the part to an aqueous solution of 20-45%...
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4439242 |
Low hot water volume warewasher
A rack-type high capacity warewashing machine is designed to cleanse and sanitize foodware in a cycle time of the order of one minute and to accomplish sanitizing by heating the foodware with fresh...
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4434069 |
Plastic bottle cleaner
A process of cleaning a polycarbonate bottle includes (a) washing the bottle with a composition consisting essentially of an aqueous basic solution containing the members: alkali metal...
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4427455 |
Barrel cleaning method
The cleaning of barrel type containers, particularly beer kegs which have a fitting including a riser pipe which extends into the keg, is accomplished by incrementally increasing the level of a...
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4421780 |
Heat-sealable polyolefin films and processes for their preparation
Heat-sealable films are described which are constituted by a polyolefin film, particularly polypropylene, having on one surface thereof a layer of primer, applied in aqueous or aqueous-alcoholic...
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4420343 |
Process for the thermal decoking of cracked gas coolers
A process for the thermal decoking of cracked gas coolers for the indirect cooling, by means of water, of ethylene-containing cracked gases which are obtained by thermal cracking of hydrocarbons in...
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4419248 |
Biofilm removal
A method is provided for removing biofilm from a surface submerged in water. The method includes cooling the biofilm to below the freezing point of water to thereby generate large, sharp-edged ice...
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4417926 |
Method for cleaning and disinfecting used plastic Petri dishes
Contaminated plastic waste material in the form of used Petri dishes, so-called agar plates, is rendered harmless and cleaned by placing the agar plates in a bacterium-tight heating chamber...
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4404040 |
Short chain fatty acid sanitizing composition and methods
Sanitizing concentrate and "use" compositions comprising aliphatic, short chain fatty acid (i.e., C 6 -C 14 fatty acid), hydrotrope or solubilizer for the fatty acid, hydrotrope-compatible acid...
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4402758 |
Method for removing scale from porous diffusion tiles
A method for cleaning porous diffusion tiles used in systems for distributing oxygen or oxygen containing gas in water bodies is disclosed. The build-up of scale, which blocks the pores in such...
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4377420 |
Removal of carbonaceous material from gas turbine cavities
An improved method of cleaning carbonaceous matter from enclosed cavities in gas turbine engines is comprised of providing inlet and exit gas ports to the cavity, carefully heating the structure...
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4370195 |
Removal of plasma etching residues
An improvement in the etching of aluminum utilizing a carbon-containing etchant gas is provided whereby the residues remaining after etching are treated in a nitrogen glow discharge for a time...
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4368081 |
Method for removing residual hydrogen peroxide on a sterilized food package
Packing material for foodstuff is sterilized with hydrogen peroxide. Residual hydrogen peroxide on the material is then removed by contacting the material with an anti-oxidant or reducing agent...
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4366005 |
Steam washing in a dishwasher
Soil, including starch deposits, are removed from tableware in a dishwasher by a preliminary wash with cool water at approximately 20° C., followed by a steaming operation and then a washing...
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4364777 |
Prevention of foam in alkaline cleansing bath by the use of mixed formals of polyglycol ethers
An alkaline washing composition comprised of strongly alkaline reacting inorganic salts, optionally wetting agents and a defoaming effective amount of at least one mixed formal of an...
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4361445 |
Copper alloy cleaning process
A rapid and effective surface cleaning process for copper alloys, particularly copper alloys containing aluminum and other metals tending to form surface coatings of refractory oxides during...
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4339281 |
Shank diamond cleaning
The surface of a diamond bonded to a shank is cleaned by subjecting the shanked diamond to an ultrasonically agitated aqueous bath, contacting the shanked diamond with a concentrated aqueous...
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4333773 |
Method for internal washing or cleaning and rinsing or drying of tubular materials
The invention relates to a method for internal washing or cleaning and rinsing or drying of tubular materials. Particularly the invention relates to a method for washing or cleaning of tubular...
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4322252 |
Label removal from phonograph record disks
Method and apparatus for removing labels from an article such as a phonograph record, consisting of subjecting the article and label to the action of a solvent in a vapor-phase mode, and a liquid...
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4318749 |
Wettable carrier in gas drying system for wafers
A gas drying system for use in removing a liquid from a substrate comprises a carrier adapted to support the substrate wherein the parts of the carrier that make contact with the substrate have a...
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4316750 |
Apparatus and method for cleaning a flux station of a soldering system
Spray flux apparatus (10) of a soldering system is automatically cleaned by delivery of a predetermined amount of solvent to the apparatus. A control system (50) transmits signals for controlling...
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4314856 |
Process for sequentially degreasing, tumbling, washing and drying objects
Process of degreasing and washing objects, particularly industrially manufactured pieces having blind holes, comprises the steps of arranging a centrifuge drum in upright position, rotating the...
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4308089 |
Method for preventing corrosion of Al and Al alloys
Disclosed is a method for preventing corrosion of Al and Al alloys processed by the dry-etching method, which comprises (i) the step of sputtering Al or Al alloy in an ammonia-containing atmosphere...
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4304611 |
Method and apparatus for cleaning container closures
Apparatus and method for cleaning container closures during downward travel in an elongated vertical pathway from a hopper to a capping machine. The apparatus includes liquid and gas spray means...
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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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