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Economics Laboratory, Inc. Patents
Assignee:
Economics Laboratory, Inc.
Address:
St. Paul, MN
No. of patents:
64
Patents:


1 2


Patent Number Title Of Patent Date Issued
RE29193 Fluid metering device April 26, 1977
A fluid metering device mixes a predetermined quantity of a first fluid with a larger quantity of second fluid supplied to the device at a higher pressure on each cycle. The pressure of the second fluid provides the force necessary to motivate a first pumping means which on movement to a
D288954 Dispensing nozzle March 24, 1987
D278515 Bottle April 23, 1985
D265460 Jug July 20, 1982
D248103 Powder detergent dispenser June 6, 1978
D244598 Powder detergent dispenser for use with remotely located washing machines June 7, 1977
4675215 Method and composition for the inhibition of corrosion June 23, 1987
A method and composition for inhibiting corrosion is disclosed. The method involves forming a coating of from about 1-10 mils thick on a surface, with a composition comprising an over-based alkaline organic sulfonate salt, a drying oil, a copper or rare earth metal drier, a zinc metal
4651907 Method and apparatus for dispensing a fluid using a fluid-operated timer March 24, 1987
A preferred cleaning system (10) is disclosed which includes a hydraulic timer valve (22) which is in fluid communication with a cleaning chemical dispenser (14) and a water supply (12). The hydraulic timer valve (22) preferably includes a bearing arrangement (44) which is spring biased
4642258 Treatment of fabrics in machine dryers using treating means containing fabric treating compositi February 10, 1987
A reusable permeable dispenser for dispensing solid or semi-solid fabric conditioning agent which can be attached to a machine dryer drum or tumbles loosely in the dryer, comprising a flexible permeable container comprising a composition of a quarternary ammonium anti-static agent, a
4632741 Synthesis of alkyl phosphinate salts and bis(alkyl) phosphinate salts December 30, 1986
An improved method for the preparation of phosphinate salts or bis(alkyl) phosphinate salts by the reaction of an olefinic material with a hypophosphite salt by means of irradiation with UV light in the presence of a photoinitiator is disclosed.
4624713 Solid rinse aids and methods of warewashing utilizing solid rinse aids November 25, 1986
Methods of warewashing utilizing a solid rinse aid, and the solid rinse aid which comprises a surfactant and urea, and preferably a dispensing rate adjusting additive, are disclosed.
4617272 Enzyme drying process October 14, 1986
A process for removing the water from an enzyme-containing aqueous medium is disclosed which comprises spraying the medium onto a heated, fluidized bed of inert substrate particles and recovering a dry enzyme concentrate therefrom.
4595520 Method for forming solid detergent compositions June 17, 1986
Methods are disclosed for preparing solid alkaline detergent compositions from aqueous emulsions comprising water, a source of alkalinity, a condensed phosphate hardness sequestering agent and a solidifying agent such as anhydrous sodium carbonate, comprising heating said emulsion to
4594176 Polyalkylene polyamine-glycol accelerators for paint removal compositions June 10, 1986
Alkaline compositions useful to form aqueous paint stripping solutions are disclosed which comprise mixtures of an alkali metal hydroxide, a polyoxyalkylene polyamine accelerator and, optionally, a glycol or glycol ether accelerator.
4594175 Mechanical dishwashing rinse composition having a low foaming sulfonic acid rinsing agent, a hyd June 10, 1986
A low foaming rinse composition that can be used in spray warewashing machines to provide sanitation, bleaching, and rinsing can comprise in an aqueous base a sufficient bleaching-sanitizing amount of an active-halogen composition and a sulfonate rinse agent, optionally in the presence o
4590014 Synthesis of alkyl phosphinate salts May 20, 1986
An improved method for the preparation of alkali metal phosphinate salts by the reaction of an olefinic material with an alkali metal hypophosphite in the presence of a free radical source is disclosed.
4587030 Foamable, acidic cleaning compositions May 6, 1986
Soil comprising soap scum and hardness components can be efficiently removed by an acidic cleaning composition which comprises a major proportion of water, an acidic component comprising a mixture of a weak organic acid and a weak inorganic acid, a surfactant system comprising a majo
4579676 Low-phosphate liquid cleaning composition April 1, 1986
Aqueous alkaline cleaning concentrates and wash solutions are disclosed which comprise an alkali metal hydroxide, a water-conditioning acrylic polymer, an active chlorine source and a fatty or oily soil-dispersing amount of a phosphinopolycarboxylic acid. The wash solutions are parti
4571327 Solid cast detergent dispenser with insert for holding noncompatible chemical February 18, 1986
A dispenser (10) for a detergent (13) is disclosed. A housing (10) defining an inner cavity (12) holds the detergent (13). The cavity (12) has a circular opening. An insert (14) of a substance not chemically compatible with the detergent (13) is retained in the opening of the inner cavit
4569781 Cast detergent-containing article and method of using February 11, 1986
Solid cast detergent-containing articles are produced for use in automatic washing machines. A liquid detergent composition is cast into a mold where it is allowed to solidify. The solid cast detergent, surrounded on all but its upper surface by the mold, is used in automatic washing mac
4569780 Cast detergent-containing article and method of making and using February 11, 1986
Solid cast detergent-containing articles are produced for use in automatic washing machines. A liquid detergent composition is cast into a mold where it is allowed to solidify. The solid cast detergent, surrounded on all but its upper surface by the mold, is used in automatic washing mac
4537705 Aqueous alkaline polyamine paint stripping compositions August 27, 1985
Alkaline compositions useful to form aqueous paint stripping solutions are disclosed which comprise mixtures of an alkali metal hydroxide, a polyoxyalkylene polyamine accelerator and, optionally, a glycol or glycol ether accelerator.
4518459 Methods of deinking secondary fibers May 21, 1985
Washing methods of deinking secondary cellulose fiber (i.e., removing unwanted non-cellulose materials therefrom) are disclosed. These washing methods (as opposed to flotation methods) generally involve deinking the fiber with surface active agent (surfactant).The present invention utili
4512908 Highly alkaline liquid warewashing emulsion stabilized by clay thickener April 23, 1985
A stable, highly alkaline liquid warewashing emulsion composition can comprise an effective hardness sequestering amount of a sodium condensed phosphate, a detergent building amount of sodium hydroxide, an effective stain-removing amount of an inorganic source of chlorine, and an emulsio
4511311 Fluid system control apparatus and method April 16, 1985
A method and apparatus for controlling the amount of fluid (12) pumped to a using implement by a fluid distribution system (10) is the subject of this application. The apparatus includes a weir chamber (40) into which fluid diverted from a fluid supply line (22) into a return line (36) f
4509402 Magnetic reversing mechanism April 9, 1985
A magnetic snap-action directional control valve mechanism preferably for use with a fluid pressure actuated reciprocating motor or pump (28). A driven member, represented by a tie rod assembly (42) in the described preferred embodiment, is caused to reciprocate at the same frequency as
4495225 Method and composition for the prevention or inhibition of corrosion January 22, 1985
A method and composition for preventing corrosion is disclosed. The method involves forming a coating of from about 2 to 5 mils thick on a surface, with a composition comprising an over-based alkaline earth organic sulfonate salt, a drying oil, a copper or rare earth metal drier, a zinc
4491988 In-tank toilet bowl cleaner dispenser January 8, 1985
A dispenser (10) for use in a flush tank of a toilet is disclosed. The flush tank has a first water level (17) during quiescent periods and a second water level (18) when the toilet is flushed. The dispenser (10) includes a housing (11) having a top (11a) and bottom (11b). The housing
4483741 Low-foaming, pH sensitive, alkylamine polyether surface active agents and methods for using November 20, 1984
Alkylamine polyether surface active agent compositions and methods for using are described. The instant compositions are low foaming, and pH sensitive and are generally of the structure: ##STR1## in which (a) R.sub.1 may be hydrogen or alkyl;if R.sub.1 is hydrogen then R.sub.2, R.sub
4462425 Backflushing system July 31, 1984
A backflushing system capable of being used with an automatic milking device is the subject of this patent application. The system includes a control cam (54) which can be moved linearly to effectuate the various functions. The cam (54) has formed thereon a plurality of lands (64, 66,
4445971 Methods of foam inhibition or depression May 1, 1984
Methods of foam inhibition or depression in industrial milieu. The present methods generally involve the use of certain nonionic surfactants having the structure:wherein R.sub.1 is a monovalent organic hydrophobic moiety or hydrophobe, preferably selected from the group consisting of lon
4443357 Hydrophobic silica or silicate, compositions containing the same and methods for making and usin April 17, 1984
Particulate silica or silicate made hydrophobic by heat treatment to form a reaction product with a hydrophobic alcohol, process for its preparation, and its use in defoaming compositions.
4427456 Tote box content washer and method of washing January 24, 1984
An apparatus for cleaning a tote box (14) and the contents thereof is disclosed. A tote box support (16) is secured to conveyor chain (20) which are mounted on pulleys (32). Pneumatic motor (36) drives rotatable shafts (34) which are secured to the pulleys (32). This provides a means for
4426362 Solid block detergent dispenser January 17, 1984
A detergent dispenser (20) for efficiently converting one or more solid block detergent compositions into concentrated detergent solutions is disclosed. A housing (12) configured for mounting to a solid surface defines a substantially enclosed inner cavity (30), and access and discha
4424082 Method for cleaning parts in a tote box January 3, 1984
The contents of an open-top tote box are cleaned by flooding the tote box while the tote box is horizontal at a first position with a volume of cleaning solution at least twice that of the tote box so that the solution flows over the open top of the tote box; indexing the tote box to a s
4421664 Compatible enzyme and oxidant bleaches containing cleaning composition December 20, 1983
Stabilized cleaning compositions comprise a biochemical soil degrading enzyme, a slow release oxidant bleach composition and an effective amount of a reducing agent to prevent the appearance of an enzyme deactivating concentration of oxidant bleach composition permitting the enzyme to
4407790 Method of controlling bloat using nonionic surfactants October 4, 1983
A method for controlling bloat comprising administering to a ruminant nonionic surfactants comprising alkyl polypropyleneoxy-polyethyleneoxy polyethers.
4404040 Short chain fatty acid sanitizing composition and methods September 13, 1983
Sanitizing concentrate and "use" compositions comprising aliphatic, short chain fatty acid (i.e., C.sub.6 -C.sub.14 fatty acid), hydrotrope or solubilizer for the fatty acid, hydrotrope-compatible acid so that the concentrate, when diluted with a major amount of water provides a use
4376787 Control of mastitis March 15, 1983
A mastitis controlling method and composition based upon anionic surfactants of the formulawhich generally includes organic sulfonates, sulfonic acids, phosphonates and phosphates, the composition being maintained in a pH range of 2.0 to 5.0 (preferably 2.1 to 4.0, and most preferably 2.
4372345 Fail-safe valve February 8, 1983
A fail-safe valve (10) for precluding contamination of fluid, such as milk, having passed through a main fluid flow line (12) from an input end, such as a milking claw, to a collection and storage tank is the subject of this application. A flushing conduit (46) through which flushing wat
4372227 Method of reducing high temperature slagging in furnaces February 8, 1983
Slag buildup in high-temperature areas of a furnace system is minimized by adding to the molten ash particles carried by the flue gas a conditioner which is taken up by those molten particles and produces a nucleating effect when those particles cool, causing them to solidify more rapidl
4339235 Methods and compositions for bleaching of mycological stain July 13, 1982
Methods and compositions for bleaching and removal of mycological stain are disclosed. The method includes the step of contacting the mycological stain with the composition which includes an improved thixotropic, hypohalite bleach having fumed silica therein. Unexpected potentiation of
4258056 Control of mastitis and compositions therefor March 24, 1981
Neutral to mildly acidic externally-applied mastitis control agents comparable to iodophor teat dips in activity can be obtained from the combination of an anionic surfactant (e.g. an aromatic sulfonate or sulfonic acid) and an aminocarboxylic-type chelating agent. A nitroalkanol ant
4243543 Stabilized liquid enzyme-containing detergent compositions January 6, 1981
Enzyme activity of liquid proteolytic enzyme-containing detergent compositions is stabilized by adding an antioxidant and a hydrophilic polyol and stabilizing the pH of the composition.
4238345 Stabilized liquid enzyme-containing detergent compositions December 9, 1980
Enzyme activity of liquid proteolytic enzyme-containing detergent compositions is stabilized by adding an antioxidant and a hydrophilic polyol and, when necessary, stabilizing the pH of the composition.
4199602 Control of mastitis and compositions therefor April 22, 1980
Neutral to mildly acidic externally-applied mastitis control agents based upon antimicrobial nitroalkanols (e.g. 2-bromo-2-nitropropane-1,3-diol) can be made more effective against Pseudomonas aeruginosa through "potentiation" with an aminocarboxylic-type chelating agent. The chelating
4149977 Treatment of fabrics in machine dryers April 17, 1979
Fabrics are treated in machine drying apparatus to reduce static electricity carried by the fabrics, soften the fabrics and improve other fabric properties. A reusable dispenser of solid or semi-solid fabric-conditioning agent is placed in the dryer drum and tumbled with the fabrics
4137044 Method of washing January 30, 1979
A laundry method is disclosed including the step of laundering oil soiled fabric in lipophilic surfactant composition and subsequently laundering such fabric with a hydrophilic surfactant based detergent system.
4106950 Tank wagon cleaning method August 15, 1978
The interior of the tank of a tank truck or a tank wagon, is cleaned using a selectively removable sprayhead and the built-in delivery pump of the tank vehicle. A removable sprayhead is inserted into the interior of the tank through a manhole and connected, via the delivery pump, to an
4105813 Treatment of fabrics in machine dryers August 8, 1978
Fabrics are treated in machine drying apparatus to reduce static electricity carried by the fabrics, soften the fabrics and improve other fabric properties. A sponge impregnated with a heat softenable solid or semi-solid fabric-conditioning agent is placed within the dryer drum and t
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