Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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 |
| 4394348 | Process for the preparation of aluminium alloys Strontium-modified aluminium alloys may be produced by using strontium peroxide as the source of strontium. The strontium peroxide may be mixed with molten aluminium or molten aluminium alloy in a quantity sufficient to give the desired strontium metal co... | 07/19/1983 |
| 4383970 | Process for preparation of graphite-containing aluminum alloys A process for preparation of graphite-containing aluminum alloys includes incorporating graphite particles into an aluminum containing melt. When the graphite particles are incorporated, floating of the graphite particles to the surface of the melt is pre... | 05/17/1983 |
| 4375499 | Aluminum-tin base bearing alloy and composite An aluminum-tin (Al-Sn) base bearing alloy and a bearing material which is made by applying the Al-Sn base bearing alloy to a backing steel sheet by pressure welding. The Al-Sn base bearing alloy of the invention is characterized in that the coarsening of... | 03/01/1983 |
| 4324846 | Negative electrode composition A secondary electrochemical cell and a negative electrode composition for use therewith comprising a positive electrode containing an active material of a chalcogen or a transiton metal chalcogenide, a negative electrode containing a lithium-aluminum allo... | 04/13/1982 |
| 4304594 | Hardening of metals Hardened metals are produced by subjecting molten metals to the action of an electrostatic field of at least 1000 volts during the cooling and solidification of the metal.... | 12/08/1981 |
| 4289533 | Deoxidizing alloy for molten steel A deoxidizing agent for molten steel, which is an alloy of aluminum and at least 2 mole %, based on the aluminum, of an element of Group IIIa of the periodic table. In steel which has been deoxidized with this deoxidizer, an oxide inclusion based on the d... | 09/15/1981 |
| 4288500 | Electrochemically active aluminum alloy and composite An electrochemically active aluminum alloy characterized in that it consists essentially of, per 100 parts of weight of aluminum, 0.01-1 parts of weight of gallium and/or indium and in that it consists essentially of 0.01-1 parts of weight of phosphorous.... | 09/08/1981 |
| 4248630 | Method of adding alloy additions in melting aluminum base alloys for ingot casting A method of adding alloying elements, including highly reactive metals such s lithium, to molten aluminum so that the normally occurring oxidation reaction of such elements with the atmosphere is minimized. After adding all alloying elements, except the hi... | 02/03/1981 |
| 4213781 | Deposition of solid semiconductor compositions and novel semiconductor materials Solid layer semiconductor compositions are deposited by the simultaneous sputtering from a sputter target and electrically discharge a reacting gas preferably by application of an RF potential. Preferably, the method is used to make solid solution layers ... | 07/22/1980 |
| 4213799 | Improving the electrical conductivity of aluminum alloys through the addition of mischmetal The present invention utilizes the unique addition of mischmetal to aluminum base alloys to either enhance the conductivity of such alloys when compared to commercial conductor grade material or provide equivalent conductivity when utilizing grades of alu... | 07/22/1980 |
| 4213800 | Electrical conductivity of aluminum alloys through the addition of yttrium The present invention utilizes the unique addition of yttrium to aluminum base alloys to either enhance the conductivity of such alloys when compared to commercial conductor grade material or provide equivalent conductivity when utilizing grades of alumin... | 07/22/1980 |
| 4171215 | Alloying addition for alloying manganese to aluminum Manganese is alloyed into aluminum using a solid compact prepared by blending finely divided particles comprising beta manganese with aluminum particles and then compacting the mixture into a readily useable form such as a briquette. The resultant briquet... | 10/16/1979 |
| 4167410 | Alloy for use in brazed assemblies An improved corrosion resistant aluminum alloy for use in the manufacture of brazed assemblies having improved sag resistant properties is disclosed. The alloy consists essentially of an aluminum base alloy containing from 0.05 to 0.4% chromium, from 0.02... | 09/11/1979 |
| 4166755 | Aluminum alloy capacitor foil and method of making A particular aluminum base alloy system which utilizes gallium as an alloying element is described and is particularly useful as foil material in electrical capacitors. The addition of the small amount of gallium to the alloy system provides foil produced... | 09/04/1979 |
| 4150204 | Aluminum anode alloy for primary high power density alkaline fuel cells and batteries A tin and mercury free aluminum alloy of specific composition for use as an node in fuel cells and electrochemical couples and particularly in a silver oxide-aluminum battery comprising high purity aluminum alloyed with gallium and magnesium in specified q... | 04/17/1979 |
| 4098606 | Electrochemically active aluminium alloy, the method of its preparation and use An electrochemically active alloy of aluminum with indium, gallium and thallium, in which the alloy would consist of, by weight percentage, about 0.01% to 0.5% of indium, gallium, or thallium of varying and selective composition, while the ratios between ... | 07/04/1978 |
| 4086148 | Process of making etched aluminum sheets and electrolytic capacitors formed therefrom The invention concerns a new alloy composition prepared from refined aluminum which may be applied to the manufacture of thin sheets which are etched and shaped with a view to producing electrolytic capacitors. The alloy is formed by bringing the chromium... | 04/25/1978 |
| 4080200 | Process for alloying metals A process is provided for efficiently and rapidly alloying a slowly soluble solute metal with a molten host metal maintained at a temperature of T° C, the solute metal having a melting point of over T° C + 100° C. The alloying is effected without subst... | 03/21/1978 |
| 4053011 | Process for reinforcing aluminum alloy A composite reinforced with polycrystalline alumina fibers in a matrix of an aluminum alloy containing 0.5-5.5% by weight of the matrix of lithium is prepared by infiltrating alumina fibers with a molten alloy containing aluminum and 1-8% by weight of lit... | 10/11/1977 |
| 4049443 | Method of fabrication of an alloy containing an alkali metal and/or an alkaline-earth metal The method consists in subjecting a mixture of an alkali nitride and/or an alkaline-earth nitride to thermal decomposition in vacuo in the presence of at least one metallic component with which it is desired to alloy the alkali metal and/or the alkaline-e... | 09/20/1977 |
| 4035180 | Catalytic process for the reduction of aluminum chloride by manganese The present invention provides a process for the catalytic reduction of aluminum chloride by manganese to form a high aluminum content alloy, separating the catalysis metal from the alloy, and separating the manganese in the alloy to produce essentially p... | 07/12/1977 |
| 4011372 | Method of preparing a negative electrode including lithium alloy for use within a secondary electrochemical cell A negative electrode that includes a lithium alloy as active material is prepared by briefly submerging a porous, electrically conductive substrate within a melt of the alloy. Prior to solidification, excess melt can be removed by vibrating or otherwise m... | 03/08/1977 |
| 3997339 | Aluminum alloy foil for high voltage electrolytic capacitors An aluminum alloy foil for a high voltage electrolytic capacitor in which the foil contains one or more of the elements, antimony, barium, and zinc in quantities 5 to 200 ppm. and at the most 0.5 ppm. of lead and bismuth plus at the most 2 ppm. of calcium... | 12/14/1976 |
| 3961944 | Aluminum-base alloys for cable-sheath The cable-sheath material having superior workability and providing an advantage of less eddy current loss to result a power transmission line having high current-carrying capacity is composed of an aluminum-base alloy containing less than about 1.7% by w... | 06/08/1976 |
| 3957532 | Method of preparing an electrode material of lithium-aluminum alloy A solid compact having a uniform alloy composition of lithium and aluminum is prepared as a negative electrode for an electrochemical cell. Lithium losses during preparation are minimized by dissolving aluminum within a lithium-rich melt at temperatures n... | 05/18/1976 |
| 3955039 | Aluminum tantalum layers for electronic devices Al-Ta alloy films containing 2 to 20 atomic % of Ta in Al exhibit an improved temperature stability. An Al-alloy film containing 7 atomic % of Ta has a resistivity of 60μΩ cm, a temperature coefficient of resistance of +100 ppm°/K and a sparking potent... | 05/04/1976 |
| 3951764 | Aluminum-manganese alloy Aluminum-manganese alloys containing up to about 10.0% by weight manganese are made by reacting molten aluminum with a manganese oxide, such as MnO or MnO2, under a blanket of fluoridic salts, for example cryolite. The alloy can also be prepare... | 04/20/1976 |
| 3950162 | Reduction to manganese metal using metal transporting compounds This invention provides a process for obtaining substantially pure manganese metal by the reduction of a manganese oxide or a manganese halide by reaction with a subhalide of a transport metal. The transport metal can be aluminum, silicon, or titanium. In... | 04/13/1976 |
| 3949275 | Electric thin-film circuit and method for its production An electric thin-film circuit has a conductor path and at least one capacitor and/or one resistor, and it comprises a substrate base member with a first tantalum-aluminum-alloy layer formed thereupon, and is etched to form the outline of the conductor pat... | 04/06/1976 |
| 3941588 | Compositions for alloying metal A method, compositions and articles are described for the direct addition of alloying metal to a molten metal to be alloyed, which provide more rapid dissolution of the alloying metal in the molten metal than has been possible heretofore. The alloying met... | 03/02/1976 |
| 3935004 | Addition of alloying constituents to aluminum Metals are alloyed into aluminum using a solid compact comprised of particles containing a high concentration of the metal to be added. The compacts are prepared by blending finely divided particles of the metal containing material with a salt fluxing age... | 01/27/1976 |
