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 |
| 7357849 | Method and system for separating solids from liquids A method and system for treating feedwater includes evaporating a portion of the feedwater in a first evaporation chamber so as to separate water vapor from the remaining feedwater. Droplets of the remaining feedwater are dispersed into a stream of hot air produced ... | 04/15/2008 |
| 7264781 | Calcining plant and method Particulate material to be calcined is conditioned and then introduced into a stream of flue gases which transport the material along a sloping drying duct while drying the material. The dried material is then introduced into the same stream of flue gases upstream o... | 09/04/2007 |
| 7182928 | Calcium phosphate cements made from (TTCP) with surface whiskers and process for preparing same A tetracalcium phosphate (TTCP) particle for use in preparing a fast-setting, bioresorbable calcium phosphate cement is disclosed. The TTCP particle has a basic calcium phosphate whiskers on a surface thereof; the basic calcium phosphate whiskers having a Ca/P molar... | 02/27/2007 |
| 7169373 | Tetracalcium phosphate (TTCP) having calcium phosphate whisker on surface and process for preparing the same A tetracalcium phosphate (TTCP) particle for use in preparing a fast-setting, bioresorbable calcium phosphate cement is disclosed. The TTCP particle has a basic calcium phosphate whiskers on a surface thereof; the basic calcium phosphate whiskers having a Ca/P molar... | 01/30/2007 |
| 7138534 | Process for the continuous production of an olefinic oxide A process for the continuous production of an olefinic oxide such as propylene oxide by direct catalytic oxidation of an olefin with hydrogen peroxide. The process involves successive reaction, distillation, decomposition, phase, separation, condensation and distill... | 11/21/2006 |
| 6846493 | Synthetic biomaterial compound of calcium phosphate phases particularly adapted for supporting bone cell activity The present invention is directed to a synthetic biomaterial compound based on stabilized calcium phosphates and more particularly to the molecular, structural and physical characterization of this compound. The compound comprises calcium, oxygen and phosphorous, wh... | 01/25/2005 |
| 6663948 | Additive comprising porous calcium phosphate for synthetic resins, and synthetic resin composition An additive for synthetic resins is provided which comprises composite particles obtained by depositing a calcium phosphate compound (R) on support particles (M) of a petaloid porous structure. The additive of the present invention provides synthetic resi... | 12/16/2003 |
| 6648960 | Method of shortening a working and setting time of a calcium phosphate cement (CPC) paste A method of shortening a working and setting time of a CPC paste without using additives or sacrificing its strength, which includes heating CPC powder so that the CPC powder is maintained at a temperature of 50-400° C. for a period of time which is grea... | 11/18/2003 |
| 6585992 | Synthetic biomaterial compound of calcium phosphate phases particularly adapted for supporting bone cell activity The present invention is directed to a synthetic biomaterial compound based on stabilized calcium phosphates and more particularly to the molecular, structural and physical characterization of this compound. The compound comprises calcium, oxygen and phos... | 07/01/2003 |
| 6521264 | Method for preparing a biomaterial based on hydroxyapatite, resulting biomaterial and surgical or dental use A solid powder product with a Ca/P ratio of between 1.40 and 1.90 is prepared from tricalcium phosphate and tetracalcium phosphate. An aqueous solution containing calcium ions and phosphate ions with a Ca/P ratio higher than 0.20 and lower than 0.50 is pr... | 02/18/2003 |
| 6338752 | -TCP/HAP biphasic cement and its preparing process A biphasic cement of -TCP/HAP is primarily composed of 30-60 wt % -tricalcium phosphate (Ca3 (PO4)2, -TCP) and 40-70 wt % of hydroxyapatite (Ca10 (PO4)6 (OH)2, HA... | 01/15/2002 |
| 6323146 | Synthetic biomaterial compound of calcium phosphate phases particularly adapted for supporting bone cell activity The present invention is directed to a synthetic biomaterial compound based on stabilized calcium phosphates and more particularly to the molecular, structural and physical characterization of this compound. The compound comprises calcium, oxygen and phos... | 11/27/2001 |
| 6153002 | Ceramic material for fillings and/or dental prostheses and method for the manufacture of the same A method is disclosed for the manufacture of a ceramic material for fillings or dental prostheses, which includes the steps of forming a precipitation product having at least one slightly soluble calcium phosphate compound, which has at least two phases o... | 11/28/2000 |
| 6110851 | Process for producing a ceramic material based on calcium phosphate compounds and use of this material A method of producing a ceramic material based on calcium phosphate compounds for use in dental medicine by adding a phosphate solution to a calcium salt solution, separating the precipitation formed in the reaction solution from the mother liquor, drying... | 08/29/2000 |
| 6002065 | Kits for preparing calcium phosphate minerals Setting times of calcium phosphate cement compositions are enhanced by the addition of phosphate or carbonate lubricant compositions. Methods for preparing the cement compositions are provided.... | 12/14/1999 |
| 5955047 | Process for producing alkali metal polyphosphates A process for producing an alkali metal polyphosphate, comprising heating a solution comprising a solvent, alkali metal ions, phosphate ions, and 3 to 50% by weight of organic matter, wherein the solution contains, in total, 5 to 65% by weight of the alka... | 09/21/1999 |
| 5952010 | Paste compositions capable of setting into carbonated apatite Carbonated hydroxyapatite compositions and their preparation are described. The compositions are biologically resorbable and are prepared as flowable masses which can be administered by syringe to set in situ to serve as a support structure, filler, prost... | 09/14/1999 |
| 5820841 | Hydrogen peroxide complexes of inorganic salts and synthesis thereof A method of making an inorganic salt-hydrogen peroxide complex includes the following steps: (a) mixing the inorganic salt with sufficient water for a time sufficient to form a soft paste, (b) mixing the paste with an aqueous hydrogen peroxide solution to... | 10/13/1998 |
| 5776233 | Process for preparing a ceramic material for use in dental fillings and dental crowns A bioactive ceramic material for dental fillings and crowns on the basis of calcium phosphate compounds contains crystallites of sparingly water-soluble calcium phosphate compounds in an amorphous, vitreous or polycrystalline matrix of readily water-solub... | 07/07/1998 |
| 5718875 | Process for producing ammonium polyphosphate of crystalline form II A process for producing ammonium polyphosphate of crystalline form II is described, which comprises heating a mixture of a phosphate-containing substance and a condensation agent in an ammoniacal wet air atmosphere in the presence of ammonium polyphosphat... | 02/17/1998 |
| 5660808 | Salt compatible sodium tripolyphosphate There is disclosed a process for preparing sodium tripolyphosphate which will dissolve readily in an aqueous solution also containing sodium chloride and various spices and flavorings useful in the treatment of food products such as fresh red meats, poult... | 08/26/1997 |
| 5302363 | Process for preparing anhydrous polyphosphate mixed alkali metal salts There is disclosed a process for preparing mixed alkali metal salts of tripolyphosphate. A solution of mixed orthophosphate salts, such as sodium and potassium is dried by spraying the mixture onto a hot tumbling bed of a mixture of phosphate salts. The d... | 04/12/1994 |
| 5294424 | Process for preparing high absorptivity granular sodium phosphates A process for preparing high absorptivity granular sodium phosphate mixtures made of sodium tripolyphosphate, pyrophosphates, metaphosphates and orthophosphates by hydrating and dehydrating a mixture comprising sodium tripolyphosphate in major proportion,... | 03/15/1994 |
| 5277887 | Process for the preparation of ammonium polyphosphate To prepare essentially water-insoluble, long-chain ammonium polyphosphate, in a first stage, ammonium orthophosphate and phosphorus pentoxide are reacted in the presence of gaseous ammonia in a reactor equipped in its interior with mixing, kneading and co... | 01/11/1994 |
| 5271848 | Treating of waste water with bauxite to remove phosphates from the waste water Bauxite mineral is used directly, to remove phosphates from water, in a high efficiency, highly economical system. The process of the invention involves the step of contacting the waste water stream with Bauxite for a time sufficient to lower the phosphat... | 12/21/1993 |
| 5232620 | Sodium tripolyphosphate composition and method of producing it A granular STPP suitable for detergent compositions which is non-caking in non-agitated water is produced by wetting anhydrous phase II STPP granules and drying the granules to remove free water. The resulting granules, when incorporated in detergent comp... | 08/03/1993 |
| 5215731 | Process for preparing medium density granular sodium tripolyphosphate A method of producing medium density granular sodium tripolyphosphate by compacting sodium tripolyphosphate fines with dried sodium orthophosphate salt followed by calcining the compacted mixture at a temperature in the range of from about 300° C. to abo... | 06/01/1993 |
| 5213783 | Process for producing finely divided particles of II type ammonium polyphosphate Finely divided particles of II type ammonium polyphosphate (APP) which, when added to polyolefin resins, etc., afford products having a small reduction in the mechanical characteristics, a reduced particle diameter and an increased specific surface area a... | 05/25/1993 |
| 5180566 | Process for the removal of ammonia from gases In order to remove ammonia from water vapor-containing gases, in particular offgases, the gases are brought into intimate contact with warmed polyphosphoric acid, the polyphosphoric acid advantageously having a P2 O5 content of from ... | 01/19/1993 |
| 5165904 | Process for producing ammonium polyphosphate For producing substantially water-insoluble, chain-type ammonium polyphosphate, equimolar quantities of diammonium phosphate and phosphorus pentoxide are reacted at temperatures from 170° to 350° C. in a zone, which effects continuous mixing, kneading a... | 11/24/1992 |
| 5152836 | Hydraulic calcium phosphate cement composition and cement composition containing hardening liquid A hydraulic calcium phosphate cement composition contains as main ingredients powders of calcium tertiary phosphate and calcium secondary phosphate with a molar ratio of Ca/P of 1.400 to 1.498. The calcium tertiary phosphate contains -type calcium ... | 10/06/1992 |
| 5139758 | Process for the preparation of ammonium polyphosphate To prepare essentially water-insoluble, chain-form ammonium polyphosphate from equimolar amounts of di- ammonium phosphate and phosphorus pentoxide in the presence of ammonia at temperatures of from 170° to 350° C. with constant mixing, kneading and com... | 08/18/1992 |
| 5114460 | Production of low-chloride alkali metal phosphates Potassium phosphate useful as a low-chloride content fertilizer is prepared by reacting phosphoric acid, commercial or technical grade, with fertilizer-grade potassium chloride (Muriate of Potash, 60-63% K2 O) at a reaction temperature of about... | 05/19/1992 |
| 5045294 | Process for preparing medium density granular sodium phosphates A method of producing medium density granular sodium phosphates by agglomerating STP fines with mineral acids, drying the agglomerated fines and screening to recover the dry agglomerated fines.... | 09/03/1991 |
| 5043151 | Process for producing ammonium polyphosphate which gives a low-viscosity aqueous suspension A process for producing essentially water-insoluble, chain-type ammonium polyphosphates of the general formula (NH4 PO3)n, in which n is a number from 10 to 1,000, whose 20% by weight aqueous suspension prepared at 60° C.... | 08/27/1991 |
| 5035871 | Production of concentrated aqueous polyphosphate solutions A concentrated aqueous alkali metal polyphosphate solution is prepared by adding polyphosphoric acid having a P2 O5 assay of about 82% to about 85% to a quantity of concentrated aqueous alkali metal hydroxide sufficient to neutralize... | 07/30/1991 |
| 5030430 | Preparation of phosphates by induction melting Phosphates, e.g., the polyphosphates and halophosphates, are prepared in high purity by melt thermocondensing corresponding precursors thereof, e.g., salts of orthophosphoric, pyrophosphoric or metaphosphoric acid, via electromagnetic induction heating, f... | 07/09/1991 |
| 5004589 | Process for preparing sodium tripolyphosphate There is disclosed a process from producing granular sodium tripolyphosphate of predetermined particle size by means of calcining sodium orthophosphate dried from water solution and milled to a predetermined particle size. The tripolyphosphate is produced... | 04/02/1991 |
| 4946662 | Method of forming condensed phosphates in aqueous solutions A method of forming condensed phosphates comprising reacting phosphate ions, such as generated from polyphosphate salts, and sulfamides, in an aqueous solution or suspension. An example of such a reaction is the reaction of tetrasodium tripolyphosphate an... | 08/07/1990 |
| 4935213 | Zero discharge process for preparing potassium tripolyphosphate Disclosed is a method of making potassium tripolyphosphate by loading an ion exchange resin with either potassium or hydrogen ions and passing an aqueous solution of sodium tripolyphosphate through the resin so that the sodium ions of the sodium tripolyph... | 06/19/1990 |
