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| Number | Title | Issue Date |
| 4966711 | Transition metals as treatment chemical tracers Methods for utilizing transition metals as tracers in aqueous liquid systems are provided by this invention. Transition metals with low background levels in system waters are identified as preferred when soluble in said aqueous liquid systems. The transit... | 10/30/1990 |
| 4950453 | Inhibiting corrosion by water There is disclosed a method for the protection of metal surfaces against corrosion by the formation of a passivating coating of zinc silicate on the surfaces of the metals exposed to the water. The metal surfaces are preconditioned by contact with water c... | 08/21/1990 |
| 4898713 | Process for sterilizing a tight enclosure and installation for performing this process For sterilizing a tight enclosure (10) equipped with a ventilation and filtration circuit (14), said enclosure is isolated and the internal relative humidity level is lowered by means of an assembly (50) incorporating a drying cartridge (54). The steriliz... | 02/06/1990 |
| 4783314 | Fluorescent tracers - chemical treatment monitors A method to determine performance of a treating agent (CA) added to a system body of liquid to enhance performance of the liquid body is determined by employing an inert fluorescent tracer (T) in a known T:CA dosage proportion, prepared on the basis of a ... | 11/08/1988 |
| 4759909 | Methods and apparatus for steam sterilization Methods and apparatus for steam sterilization in which goods are conditioned by removing air and heated to a desired temperature in a chamber. The goods are subjected to a plurality of pressure pulses at above atmospheric pressure by alternate pressurizat... | 07/26/1988 |
| 4687635 | Porous load vapor sterilization cycle A steam sterilization cycle having a conditioning stage, a sterilizing stage, a drying stage and an air admission stage which provides maximum removal of entrapped air from full or partial porous loads. The conditioning stage includes a plurality of press... | 08/18/1987 |
| 4680271 | Process and apparatus for analysis A continuous process and apparatus for the analysis of a sample containing a peroxycompound in the presence of hydrogen peroxide using known colorimetric techniques, characterized in that a sample is taken continuously, is continuously mixed with a colori... | 07/14/1987 |
| 4678586 | Treatment of wash water in paint spray booths To control build-up of paint in the water tank an alkaline liquid containing NaOH is added in quantities to maintain a pH not substantially less than 9, thus preventing corrosion, and a hydroxide ion concentration not exceeding 0.01M. The additive is intr... | 07/07/1987 |
| 4587098 | Method of stabilized operation of acid digestion kettle of tantalum A method of minimizing corrosion deterioration and hydrogen absorption embrittlement of tantalum encountered in performing acid digestion of organic waste matter put in an acid digestion kettle of tantalum containing high temperature high concentration su... | 05/06/1986 |
| 4550010 | Process for deodorizing polluted air A process for deodorizing polluted air, wherein the air to be deodorized is washed in a washing apparatus with an aqueous solution of hydrogen peroxide. The solution is circulated in a closed circuit while ozone is introduced either directly into the air ... | 10/29/1985 |
| 4460552 | Process for the separation of air components, such as difficultly absorbable air impurities, out of air-gas mixtures The present invention provides an apparatus and process for separating and removing chemical impurities from air which impurities are difficult to absorb. The apparatus for carrying out the process of the present invention comprises a reaction tower (11, ... | 07/17/1984 |
| 4457892 | Biocidal gas sterilization and gas leakage determination Methods and apparatus for the timely determination of potentially harmful biocidal gas leakage from a pressurized chamber during sterilizing operations are disclosed. Biocidal gas make-up values are monitored during the sterilizing phase to provide prompt... | 07/03/1984 |
| 4419510 | Method for controlling cellulose etherification reaction This invention provides a method for controlling the reaction between cellulose and an etherifying agent which comprises the steps of (a) combining cellulose with an alkylene oxide and alkyl halide in a reactor wherein an etherification reaction is initia... | 12/06/1983 |
| 4402912 | Device to automatically add a controlled amount of corrosion inhibitor with a change in spring loading A system for the addition of a corrosion inhibitor to an engine cooling system wherein a container in the coolant system holds the corrosion inhibitor in a solid package which is withheld from contact with the coolant solution by a spring under load. The ... | 09/06/1983 |
| 4384959 | Wet oxidation process utilizing dilution of oxygen A continuous process for wet oxidation of aqueous liquor containing combustible matter using oxygen or oxygen enriched gas. An inert diluent gas is injected into the aqueous liquor or reactor off-gas such that oxygen in the gas phase is diluted by the sum... | 05/24/1983 |
| 4372916 | Establishing and ascertaining desired air removal in steam sterilization Air removal is completed and ascertained, in steam sterilization systems which use steam flow through a sterilizing chamber to facilitate air removal, by methods which enable steam-table values for a dependent variable relationship of pressure and tempera... | 02/08/1983 |
| 4370301 | Dry deodorizing apparatus A dry deodorizing apparatus. More particularly, it relates to a dry deodorizing apparatus wherein bad smell components in the gas to be treated is oxidized and removed by ozone and bromine and hydrobromine acid and, in addition, the ozonizing material suc... | 01/25/1983 |
| 4367197 | Method for the control of excessive corrosion in phosphoric acid circuits Methods for control of excessive corrosion in wet process phosphoric circuits are effected by oxidation of reduced ion species in the acid with maintenance of EMF value of the acid above about 190 millivolts (S.C.E. reference) through the digestion circui... | 01/04/1983 |
| 4343765 | Method for deodorizing and disinfecting air In a first embodiment of the method and apparatus, the oxidant is loaded upon a support bed and is continuously regenerated by an ozone generator located upstream from the support bed. The ozone generator has a capacity less than the peak load requirement... | 08/10/1982 |
| 4335072 | Overhead corrosion simulator Apparatus for determining the corrosion rate of petroleum distillation equipment so that corrosion inhibitors may be effectively utilized to control corrosion. The apparatus includes a water box having a coil arranged in the box through which hydrocarbon ... | 06/15/1982 |
| 4317797 | Resin purger A resin purger which reliably determines when purging is completed and prnts humid air from re-entering the purged material. A sealed container has an inlet valve attached to a source of inert purge gas and an outlet valve. A diffuser is connected to the... | 03/02/1982 |
| 4309381 | Establishing and ascertaining desired air removal in steam sterilization Air removal is completed and ascertained, in steam sterilization systems which use steam flow through a sterilizing chamber to facilitate air removal, by methods which enable steam-table values for a dependent variable relationship of pressure and tempera... | 01/05/1982 |
| 4277454 | Methods for the control of excessive corrosion in phosphoric acid circuits Methods for control of excessive corrosion in wet process phosphoric circuits are effected by oxidation of reduced ion species in the acid with maintenance of EMF value of the acid above about 190 millivolts (S.C.E. reference) through the digestion circui... | 07/07/1981 |
| 4250143 | System for sterilizing objects A system for producing a stream of humidified sterilizing gas for sterilizing objects such as the water systems of space vehicles and the like. The system includes a source of sterilant gas which is fed to a mixing chamber having inlet and outlet ports. W... | 02/10/1981 |
| 4212891 | Method and apparatus for storing foodstuffs A method of storing foodstuffs and an apparatus for practicing the same, in which an electrolytic cell includes a gas diffusion cathode capable of reducing oxygen electrolytically and an oxygen liberating anode, and a DC voltage is applied to the electrol... | 07/15/1980 |
| 3989461 | Apparatus for use, recovery, reconstitution, and recyclization of sterilant gas mixture Apparatus and method for the recovery, reconstitution and recyclization of a gaseous mixture used as a sterilizing medium. A recycle line interconnects a gas condenser with a sterilization chamber to return a portion of the gases discharged from the chamb... | 11/02/1976 |
| 3986832 | Apparatus for the thermal treatment of commodities packed in containers A method and apparatus for operating a continuous process apparatus in which commodities packed in containers receive thermal sterilizing treatment, wherein the containers are introduced by means of an endless conveyor and through a pressure resistant ope... | 10/19/1976 |
| 3982893 | Sterilizer control method and apparatus A signal generating and transmitting device is disclosed which can be placed within a load to be sterilized to continuously monitor sterilization affecting conditions at the center of the load. Radio signals representing the sensed conditions are transmit... | 09/28/1976 |
| 3944387 | Method and apparatus for sterilizing with a heavier-than-air gas Sterilizing apparatus and method in which a heavier-than-air sterilizing gas is introduced at a substantially constant flow rate into the bottom of the sterilizing chamber. Air in the chamber is displaced upwardly by the gas and out of the chamber through... | 03/16/1976 |
