An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 5002689 | Preparation of organometallic amide compositions This invention concerns organometallic amide compositions particularly bimetallic organoamides in liquid hydrocarbon solutions in which one metal is an alkali metal the other an alkaline earth metal, zinc or copper and particularly lithium magnesium bis-d... | 03/26/1991 |
| 4976886 | Preparation of organometallic and organobimetallic compounds A process for producing organometallic compositions by reacting an organohalide with a mixture of two metals; one being an alkali metal, the other being selected from magnesium, calcium, barium and zinc in a hydrocarbon solvent containing 0.5 to 2.0 moles... | 12/11/1990 |
| 4944894 | Ether free organometallic amide compositions An ether free magnesium bisorganoamide of the formula Mg[N(R1) (R2)]2 wherein R1 and R2 are independently selected from hydrogen and alkyl groups containing 2 to 20 carbon atoms with the proviso that at le... | 07/31/1990 |
| 4929588 | Sodium removal, from brines A method for removing 99% of the sodium ions from a natural or industrial brine containing dissolved salts of metals of Group 1A of the periodic chart and in which brine sodium ions are not the predominant metal ions by contacting the brine at pH 11 to 12... | 05/29/1990 |
| 4859343 | Sodium removal from brines A method for removing 99% of the sodium ions from a natural or industrial brine containing dissolved salts of metals of Group 1A of the periodic chart and in which brine sodium ions are not the predominant metal ions by contacting the brine at pH 11 to 12... | 08/22/1989 |
| 4855059 | Purification of brines with hydrous metal oxide ion exchangers A process for the substantial removal of calcium or other divalent ions from natural or industrial brines containing high levels of another ion comprising (a) adjusting the pH of the brine to an alkaline pH of 9 to 11 with an alkaline material; and (b) co... | 08/08/1989 |
| 4820879 | Preparation of hydrocarbyloxy magnesium halides The present invention provides a process for making hydrocarbyloxy magnesium halides by reacting in an inert atmosphere under anhydrous conditions activated magnesium metal with an oxygen containing compound of 1 to 20 carbon atoms and an anhydrous hydrog... | 04/11/1989 |
| 4820672 | Hydrocarbon soluble and insoluble organo magnesium chloride complexes, processes and uses A process for producing an alcohol adducted or complexed hydrocarbon soluble magnesium chloride comprising reacting in a hydrocarbon medium a compound selected from magnesium metal, dialkyl magnesium, dialkoxy magnesium and alkoxy magnesium chloride with ... | 04/11/1989 |
| 4792640 | Hydrocarbyloxy magnesium halides This invention concerns solid organometallic hydrocarbyloxymagnesium halides of the formula ROMgX wherein RO is a hydrocarbyloxy group of 1 to 20 carbon atoms and X is halide, and a two step process for making these halides comprising: (a) reacting an act... | 12/20/1988 |
| 4781756 | Removal of lithium nitride from lithium metal A process for the removal of lithium nitride from lithium metal by adding to liquid lithium metal containing lithium nitride, at a temperature between the melting point of lithium and 300° C., with agitation, a stochiometric quantity of aluminum to react... | 11/01/1988 |
| 4732751 | High purity lithium oxide process A process for producing high purity lithium oxide comprising decomposing lithium peroxide at a temperature of 350° to 450° C., in an inert atmosphere in the substantial absence of water to produce impure lithium oxide followed by heating the impure lith... | 03/22/1988 |
| 4723962 | Process for recovering lithium from salt brines An improved process is described for recovering lithium from evaporatively concentrated brines. Epsom salt recovered from the brine at about 0° C. is added to the concentrated lithium-containing brine, so as to precipitate lithium sulfate monohydrate, th... | 02/09/1988 |
| 4634786 | Hydrocarbon and chlorinated hydrocarbon-soluble magnesium dialkoxides Stable liquid hydrocarbon-soluble novel magnesium dialkoxide compositions, and complexes thereof with, for example, n-alkyllithiums, organomagnesiums, and the like, useful as or in the preparation of polymerization catalysts and initiators for the polymer... | 01/06/1987 |
| 4555498 | Preparation of certain alkaline earth metal organometallic compounds Stable, hydrocarbon-soluble organobarium-, organocalcium-, and organostrontium-containing polymerization initiators are prepared by reacting certain calcium, barium or strontium alkoxides with organolithium, diorganomagnesium or triorganoaluminum compound... | 11/26/1985 |
| 4320105 | Pellitizing method A method of agglomerating materials such as lithium carbonate into pellets of a desired size utilizing water to achieve initial agglomeration of the particles comprising the materials. The initially formed pellets are subjected to drying to provide hard, ... | 03/16/1982 |
| 4206191 | Preparation of lithium amide A low temperature method of preparing finely divided lithium amide. A mixture is first formed of bulk pieces of lithium metal with a catalyst such as active metallic cobalt in an inert liquid aromatic hydrocarbon, such as toluene, at about 0° C. to about... | 06/03/1980 |
| 4069267 | Stable diorganomagnesium compositions Stable diorganomagnesiums are prepared which are soluble in acyclic liquid hydrocarbons and represent novel and highly useful compositions. They are prepared, for instance, by forming a mixture of magnesium metal powder in an acyclic liquid hydrocarbon to... | 01/17/1978 |
| 4049732 | Continuous telomerization process and its liquid products Continuous process and apparatus for the preparation of normally liquid telomers derived from the reaction of a liquid telogen, such as toluene, with a polymerizable monomeric taxogen in gaseous form, such as 1,3-butadiene monomer, in the presence of an o... | 09/20/1977 |
| 4041088 | Recirculation telomerization process and its liquid telomers and liquid telomers produced thereby Recirculation process and apparatus for the preparation of normally liquid telomers derived from the reaction of a gaseous taxogen with a solution in a liquid telogen, such as toluene, of an organometal telomerization initiator, such as a mixture or compl... | 08/09/1977 |
| 4039593 | Preparation of hydroxy-terminated conjugated diene polymers Preparation of hydroxy-terminated conjugated diene polymers, particularly polybutadienes, by capping of organodilithium- and organopolylithium- terminated conjugated diene polymers or polybutadienes with lower alkylene oxide or epoxide capping agents in t... | 08/02/1977 |
| 3994741 | Production of bricks Production of building bricks utilizing as an ingredient thereof, advantageously in substantial or in major proportion of brick-forming compositions or mixtures of ingredients, ore residues obtained from the extraction of lithium values from beta-spodumen... | 11/30/1976 |