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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4312844 | Trimetaphosphate compounds of trivalent metals A method for preparing a trimetaphosphate of a trivalent species by heating a mixture of ammonium phosphate and an oxygen-containing compound of the trivalent species is disclosed.... | 01/26/1982 |
| 4272496 | Processing elemental phosphorus (P4) containing gas streams The process of this invention provides for reducing the tendency of a carbon monoxide gas stream, containing a minor level of elemental phosphorus, to corrode metallic surfaces in a combustion zone upon combustion of the gas stream in the combustion zone ... | 06/09/1981 |
| 4258018 | Processing elemental phosphorus (P4) containing gas streams The process of this invention provides for reducing the tendency of a carbon monoxide gas stream, containing a minor level of elemental phosphorus, to corrode metallic surfaces in a combustion zone upon combustion of the gas stream in the combustion zone.... | 03/24/1981 |
| 4247419 | Single phase vanadium(IV)bis(metaphosphate) oxidation catalyst with improved intrinsic surface area A method for the preparation of a single phase crystalline vanadium(IV)bis(metaphosphate), VO(PO3)2, catalyst having an improved intrinsic surface area of from about 5 to 15 m2 /g. and useful for the vapor phase oxidation ... | 01/27/1981 |
| 4239523 | Method for manufacturing phosphatic fertilizers having a high concentration, particularly calcium metaphosphate Ca(PO3)2 A fertilizer rich in calcium metaphosphate is produced by reacting phosphorite or other calcium phosphate-bearing mineral, with ammonium bisulphate to produce a precipitate of calcium sulphate and an aqueous solution rich in ammonium mono- and biphosphate... | 12/16/1980 |
| 4216190 | Method for making ଲ-form aluminum trimetaphosphate A method is disclosed for making the ଲ-form of aluminum trimetaphosphate by reacting aluminum dihydrogen phosphate with ammonia and subjecting the reaction product to a single elevated temperature treatment.... | 08/05/1980 |
| 4165299 | Preparation of a single phase vanadium (IV) bis (metaphosphate) oxidation catalyst with an improved surface area A method for the preparation of a single phase vanadium(IV)bis(metaphosphate), VO(PO3)2, catalyst having an improved surface area and useful for the vapor phase oxidation of linear C4 unsaturated olefins, such as the n-but... | 08/21/1979 |
| 4162300 | Production of Maddrell salt Pure Maddrell salt is produced by heating sodium phosphate to temperatures of 250° to 420° C. The sodium phospate used as starting material is sodium trimetaphosphate or a mixture of sodium trimetaphosphate with Maddrell salt, monosodium orthophosphate ... | 07/24/1979 |
| 4139599 | Process for preparing dicalcium phosphate dihydrate having a portion of the calcium displaced by divalent metal ion Process for preparing dicalcium phosphate dihydrate with displacement 0.1 - 5% of the calcium by divalent metal ion.... | 02/13/1979 |
| 4126665 | Preparation of polymeric alkaline earth metaphosphate glasses Polymeric metaphosphate glasses, [M(PO3)b ]n, having chemical durabilities at least 40-400 times greater than those of the prior art are provided. In the formula, M is selected from the group consisting of Al, Be, Mg, Ca, ... | 11/21/1978 |
| 4059669 | Method of making aluminum phosphate Aluminum phosphate is made in ultrapure form by reaction between phosphoric acid and an aluminum alkoxide. Cast articles may be made by using the liquid reaction intermediate product as a binder in sintering of particles of aluminum phospate.... | 11/22/1977 |
| 4056381 | Fertilizer solutions containing stabilized iron Stable fertilizer solutions containing nitrogen, phosphorus, and iron, are prepared by admixing an iron-containing component with an ammonium phosphate-containing solution, and thereafter treating the resulting product with ammonia, thereby resulting in a... | 11/01/1977 |
| 4029742 | Process of producing Maddrell salt An advantageous process of producing Maddrell salt which is substantially free of water-soluble by-products is described. The resulting substantially water-insoluble Maddrell salt is especially useful as polishing and cleaning agent in toothpaste.... | 06/14/1977 |
| 3998668 | Aluminum metaphosphate dopant sources A solid source consisting essentially of high purity aluminum metaphosphate, Al(PO3)3 is used for introducing elemental phosphorus into P-type silicon chips or wafers of semi-conductor grade. The aluminum metaphosphate functions as a... | 12/21/1976 |
