Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 5710332 | Carbohydrate-derived surfactants and their precursors A method for the manufacture of N,N dialkylglycamine compounds of general formula R2 NR1 R3 (I) by reacting a secondary amine of general formula R2 NHR3 (II) in which R2 is a straight or br... | 01/20/1998 |
| 5656074 | Pigment which is substantially free of water-soluble salts and confers corrosion resistance Anticorrosive compositions for use in paints comprise (i) zinc oxide with (ii) the reaction product of an acidic trivalent metal compound and a silicate or (iii) an aluminium/silicate material eg a clay.... | 08/12/1997 |
| 5618385 | Method of peroxide bleaching of pulp using a peroxide decomposing inactivator Chlorine dioxide is used to stabilize hydrogen peroxide in bleach liquor at alkaline pH. This is thought to be aided by the destruction of enzymes (especially catalase) produced by bacteria. The method is useful for the reprocessing of pulps, especially w... | 04/08/1997 |
| 5571288 | Flame-retardant treatment of fabrics In the flame-retardant treatment of fabrics, there is provided a means for increased "loading" of phosphorus compounds (up to 25% moisture is retained after impregnation and drying of the fabric). This in turn enables a phosphonium compound "add-on" of 50... | 11/05/1996 |
| 5498791 | Nitrosamine and nitrite inhibition A synergistic mixture of a carbonate and/or bicarbonate with a phosphonate, especially an organoamino methylene phosphonate or an N-oxide thereof, inhibits or reduces nitrosamine contamination during preparation, storage and/or heating of products which a... | 03/12/1996 |
| 5495064 | Immobilization of metal contaminants from a liquid to a solid medium A method for the immobilization of heavy metal contaminant from a liquid medium containing sulfuric acid and one or more acids of phosphorus, for example in the treatment of acid raffinates generated during the purification of phosphoric acid. The method ... | 02/27/1996 |
| 5476519 | Dye suspensions Water insoluble or sparingly soluble dyestuffs such as disperse dyes as concentrates for making up dyebaths or for use as printing pastes, and optical brightening agents for laundry detergents are formulated as stable suspensions in aqueous structured sur... | 12/19/1995 |
| 5442113 | Nitrosamine and nitrite inhibition A synergistic mixture of a carbonate and/or bicarbonate with a phosphonate, especially an organoamino methylene phosphonate or an N-oxide thereof, inhibits or reduces nitrosamine contamination during preparation, storage and/or heating of products which a... | 08/15/1995 |
| 5385896 | Biocidal compositions and treatments Phosphonium salts such as THP and aldehydes such as formaldehyde exhibit synergistic biocidal activity.... | 01/31/1995 |
| 5378243 | Flame retardant and water-resistant treatment of fabrics In a method for the flame-retardant treatment of fabrics by impregnation with a condensate of a tetrakis (hydroxyorgano) phosphonium salt and, e.g., urea, the addition of one or more protonated and neutralized amines to the impregnation solution increases... | 01/03/1995 |
| 5351596 | Processing of powder A method and apparatus are provided for introducing a flammable powder such as red phosphorus into a hot melt such as an extrudable polymer which is in motion at the point of introduction of the flammable powder.... | 10/04/1994 |
| 5284555 | Process for preparing organophosphines Olefins can be induced to react with phosphines at ambient temperature and pressure to produce organophosphines by free-radical addition. Suitable olefins include C1 to C4 alpha-olefins, cyclic olefins, polycycloalkenyl species, ally... | 02/08/1994 |
| 5270370 | Red phosphorus Evolution of phosphine from red phosphorus is reduced by means of acyclic, aliphatic compounds having at least one carbon-to-carbon double bond, in the alpha-position relative to an electron-withdrawing group. A preferred example of such a compound is tra... | 12/14/1993 |
| 5198353 | Method for preparing stabilized enzyme dispersion Disclosed is a method for preparing a stabilized enzyme dispersion wherein the dispersion is prepared by precipitating a water-soluble polymer from a single phase, aqueous solution to form an aqueous dispersion, and before, simultaneously with or after pr... | 03/30/1993 |
| 5183649 | Production of phosphorus compounds Chlorophosphorus compounds are produced in a loop apparatus wherein chlorine is added to a recycling medium comprising chlorophosphorus compound and elemental phosphorus.... | 02/02/1993 |
| 5168655 | Hydroponic crop production Hydroponic substrates are disinfected in situ, prior to a crop production cycle, with a dilute aqueous solution containing hydrogen peroxide and at least one peracid having a ##STR1## group.... | 12/08/1992 |
| 5135541 | Flame retardant treatment of cellulose fabric with crease recovery: tetra-kis-hydroxy-methyl phosphonium and methylolamide Flame retardant cellulosic fabrics having reduced shrinkage are obtained by treatment of fabric with a tetrakis hydroxymethyl phosphonium compound or condensate and then curing with ammonia, followed by treatment involving reaction of the fabric with a no... | 08/04/1992 |
| 5094890 | Wood treatment composition and process Compositions for flame proofing wood e.g. in the form of aqueous solutions containing tetrakis (hydroxymethyl) phosphonium salt, methylolmelamine with at least 3.5 optionally alkylated hydroxymethyl groups per melamine nucleus, a polyfunctional nitrogen c... | 03/10/1992 |
| 5061315 | Products for treating surfaces Silica products obtained from trivalent metal e.g. Al compounds and silica can be used as corrosion inhibitors or adhesion promoters for organic coatings on surfaces by way of no-rinse or phosphating treatment or as pigments.... | 10/29/1991 |
| 5061314 | Products for treating surfaces Silica products obtained from trivalent metal e.g. Al compounds and silica can be used as corrosion inhibitors or adhesion promoters for organic coatings on surfaces by way of no-rinse or phosphating treatment or as pigments.... | 10/29/1991 |
| 5053119 | Ore flotation Ores of metal oxides and oxide-like compounds such as chromite and pyrochlore are beneficiated by froth flotation in the presence of substituted amino phosphonic acids or salts thereof.... | 10/01/1991 |
| 5039451 | Manufacturing concentrated surfactant compositions Mixtures of surfactants capable of forming "G" phase are prepared by forming one component of the mixture from a precursor in the presence of the other component or components and sufficient water form the product in the "G" phase.... | 08/13/1991 |
| 5008015 | Purification of phosphorus compounds The content of hydrogen chloride and phosphorous acid of crude amino organic phosphonic acids, especially diethylenetriaminepentakis (methylene phosphonic acid) is reduced by solvent extraction into an alcoholic phase leaving purified phosphonic acid behi... | 04/16/1991 |
| 4919754 | Composition wherein recycled cellulosic pulp is deinked A composition containing an aqueous, recycled cellulosic fibre pulp, print pigments contaminating the pulp, from 0.1% to 10% based on the weight of the pulp solids of a curable precursor of a solid polymer resin which is not substantive to the cellulosic ... | 04/24/1990 |
| 4919725 | Novel dispersible active sizing composition A water dispersible active sizing composition comprises an active size such as alkyl succinic acid and an effective proportion (e.g. 10-30% by weight) of a dispersant therefor, said dispersant comprising a polyalkoxylate of a rosin or fortified rosin, and... | 04/24/1990 |
| 4906396 | Protected enzyme systems A protected enzyme system suitable for storage, prior to use, in a medium such as a liquid detergent which causes degradation of the unprotected enzyme, which system comprises at least one enzyme dispersed in a hydrophobic substance which does not dissolv... | 03/06/1990 |
| 4881975 | Products for treating surfaces Silica products obtained from trivalent metal e.g. Al compounds and silica can be used as corrosion inhibitors or adhesion promoters for organic coatings on surfaces by way of no-rinse or phosphating treatment or as pigments.... | 11/21/1989 |
| 4775407 | Method of treating surfaces to control bryophytes or lichens using a water soluble tetrakis (hydroxymethyl) phosphonium salt A method of treating surfaces colonized or colonizable by bryophites or lichens which comprises applying thereto sufficient of a water soluble tetrakis (hydroxymethyl) phosphonium salt to kill, or inhibit the growth thereon of said bryophytes or lichens.... | 10/04/1988 |
| 4673509 | Biocidal water treatment The growth of microbiological contaminants in industrial cooling and process waters and in aqueous based products, susceptible to microbiological spoilage on storage, is inhibited by the presence of a phosphorus compound having a hydroxy alkyl group direc... | 06/16/1987 |
| 4659497 | Liquid detergent compositions Pourable, fluid, non sedimenting, laundry detergent composition, comprising water, surfactant, builder, a surfactant desolubilizing electrolyte and, optionally, the usual minor ingredients, consist essentially of: at least one predominantly aqueous liquid... | 04/21/1987 |
| 4655787 | Deposition processes: incorporating solvent dye into electrophoretic resin on metal surface A process for the deposition of a film of an electrophoretic resin upon the surface of a substrate which comprises the steps of (i) electrophoretically depositing from a bath comprising water, a water miscible organic solvent and the resin, a film of the resin... | 04/07/1987 |
| 4494951 | Flameproofing textiles The cure efficiency for the treatment of fabrics with tetra(hydroxymethyl) phosphonium compounds and their precondensates e.g. with urea especially from THP sulphate, is improved by passing gaseous ammonia through impregnated fabric then wetting the fabri... | 01/22/1985 |
| 4440665 | Concentrated aqueous surfactant compositions Aqueous surfactant mixtures comprising a first amphoteric surfactant and at least one non-ionic surfactant and/or at least one amphoteric surfactant non-homologous with the first amphoteric surfactant, are obtained at a concentration substantially higher ... | 04/03/1984 |
| 4383898 | De-watering of metal surfaces After a metal finishing treatment by means of an aqueous solution that forms a surface of free metal, or comprising metal ions, exposed to the environment, the surface is rinsed, contacted with a soap solution and subjected to a final rinse. The treatment... | 05/17/1983 |
| 4382066 | Uranium extraction process Uranium is extracted from wet process phosphoric acid by extraction with a mixture of a diorganophosphate and a neutral phosphorus compound, which is preferably a triorgano phosphine oxide, in the presence of nitrate to form an organic extract layer conta... | 05/03/1983 |
| 4325928 | Rock treatment process Phosphate rock can be heat treated at 380°-600° C. to convert the organics to filterable carbon and the rock converted to wet process phosphoric acid of reduced color and with reduced foaming. Rocks having high acid soluble organics but low total organi... | 04/20/1982 |
| 4304932 | Process for producing novel carboalkylated surface active agents and product The reaction of an imidazoline base of the formula: ##STR1## wherein R represents an aliphatic group comprising from 6 to 22 carbon atoms and R1 represents a substituted or unsubstituted alkyl or alkenyl group comprising 1 to 4 carbon atom... | 12/08/1981 |
| 4302479 | Preparation of iso-alpha-acid-containing hop extracts When preparing hop extract containing iso-alpha-acids, improved yield of iso-alpha-acids is obtained by contacting a solution of extracted alpha-acids in a water-immiscible non-polar liquid with a sufficiently strong aqueous solution of acid to provide a ... | 11/24/1981 |
| 4296082 | Purification of wet process phosphoric acid Wet process phosphoric acid is heated by passing alternating current through the acid, preferably in carbon apparatus to concentrations above 76% P2 O5 and preferably temperatures above 500° C. to remove sulphate and fluoride and co... | 10/20/1981 |
| 4277455 | Process for purifying phosphoric acid Wet process phosphoric acid is purified by extraction with a hexanone of pentanone to form an organic extract, containing phosphoric acid, from which the acid content is recovered by treatment with water or aqueous phosphoric acid in 2 or more portions to... | 07/07/1981 |
