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| Number | Title | Issue Date |
| 4198245 | Process for producing concrete structures of high strength The strength of portland cement concrete structures which incorporate alkali metal or alkaline earth polysulfides is increased by heating the structures at temperatures above 110° C.... | 04/15/1980 |
| 4193954 | Beta alumina manufacture Anhydrous alumina powder, preferably powdered alpha-alumina, is formed into a high solids slurry in water containing one or more soluble compounds that yield Na2 O when heated in air, preferably a mixture of sodium carbonate and sodium nitrate,... | 03/18/1980 |
| 4193750 | Self-propelled slip form machine A self-propelled slip form, closed at its top, front, and sides, but open at its rear and bottom, provides a pressure chamber having the cross-sectional shape of a wall or similar structure to be cast. Such slip form may be advanced continuously at a slow... | 03/18/1980 |
| 4193958 | Process for preparing calcium silicate shaped product An aqueous slurry of calcium silicate hydrate which is formed by heating a siliceous source and a calcareous source in water to react them and which has the specific property is shaped with a press filter molding and cured by a steam curing under steam pr... | 03/18/1980 |
| 4187268 | Method of manufacturing molded articles from a kneadable material, e.g., clay Process by which moulded articles are maufactured from clay. A continuously produced strand of the material in question is sprinkled with sand, whereafter at one location a piece is severed from the end of the strand at regular intervals, by a cutting app... | 02/05/1980 |
| 4183886 | Chemical method for embossing a ceramic acoustical product An acoustical board comprised of felted mineral wool and clay is embossed by applying an aqueous dispersion of lithium carbonate and borax to selected areas of the board surface, drying the coating and firing at a temperature in the range of from about 12... | 01/15/1980 |
| 4183885 | Quick baking process for ceramic products A process for the production of tiles made of ceramic material and having substantially planar front and back faces, comprising the steps of advancing a raw tile based on "clay material", with the term having the meaning as set forth in the description, d... | 01/15/1980 |
| 4183891 | Method for folding sheet-shaped plastic material and folded sheet-shaped plastic material obtained by carrying out this method Method for forming a folded sheet of plastic with reinforcing ribs disposed transverse to the line of fold. The line of fold or weakening line is provided with a plurality of weakening grooves separated by unweakened material of the sheet. When the sheet ... | 01/15/1980 |
| 4180538 | Method of making ceramic shaped article from inorganic raw material powder by extrusion molding A method of making a ceramic shaped article from an inorganic raw material powder by extrusion molding is disclosed. The method comprises the steps of kneading an inorganic raw material powder with a plasticizer to obtain a kneaded body which is then mold... | 12/25/1979 |
| 4179485 | Bone prosthesis and method of manufacture thereof Method for manufacturing a bone prosthesis made of porous alumina. Calibrated alumina grains are subjected to firing at a temperature lower than their sintering temperature; they are disintegrated, then compressed into a pressed mass, then the latter is s... | 12/18/1979 |
| 4177235 | Method of manufacturing electrically fused corundum A composition comprising -alumina in a concentration of at least 99.95 weight percent and process for producing such -alumina wherein alumina having an alkali metal content between 0.05 and 0.60 weight percent and Al2 O3 | 12/04/1979 |
| 4172108 | Process for production of sialons Sialon, which is one of promising materials in the field of engineering ceramics, is prepared by mixing a silicon nitride precursor such as amino- or imino-silanes and an alumina precursor such as trialkoxy- or triacyloxy-aluminums or polyaluminoxanes to ... | 10/23/1979 |
| 4171337 | Process for forming ceramic bodies employing aqueous lubricant A process for forming green ceramic bodies using an aqueous solution of a high molecular weight, water-soluble polymer as a lubricant.... | 10/16/1979 |
| 4169874 | Process for preparing shaped particles from rehydratable alumina Disclosed is a process for preparing shaped alumina particles for catalysts or catalyst supports by passing droplets of an aqueous slurry of a rehydratable alumina composition through a shaping medium, such as a column of water-immiscible liquid. The alum... | 10/02/1979 |
| 4166831 | Transparent yttria ceramics and method for producing same An article of manufacture is provided comprising a substantially transparent high density polycrystalline yttria-base body consisting essentially of yttria and from about 0.01 to 5 wt. % alumina. A method for preparing the transparent yttria doped with alumina... | 09/04/1979 |
| 4165355 | Method for manufacture of a substantially mechanically isotropic ceramic composite structure A hot pressed composite structure, and method of making same are provided, wherein such structure is reinforced in three X, Y, and Z directions and comprises a matrix material, a plurality of straight elongate rigid reinforcing members embedded in the mat... | 08/21/1979 |
| 4165350 | Fired ceramic bottle having threaded neck and method of making same A fired ceramic bottle and, particularly, a porcelain bottle is disclosed having an integral threaded neck of fired material for receiving a screw cap. The threaded neck is, preferably, an adapter separately formed apart from the bottle by the "dry press"... | 08/21/1979 |
| 4165351 | Method of manufacturing a metal oxide varistor Disclosed is a method of manufacturing a metal oxide varistor body. Conventional manufacturing techniques through sintering are utilized on any metal oxide varistor formulation which includes bismuth oxide. Following sintering, the devices are heat treate... | 08/21/1979 |
| 4164527 | Method of making superhard articles The method of preparing superhard articles consists of placing a mixture of powdered hard-alloy matrix material and diamond grains into a hard-alloy envelope formed from a hard-alloy material, preferably of exactly the same composition as the hard-alloy m... | 08/14/1979 |
| 4164528 | Method for producing metal nitride sintered moldings Metal nitride sintered moldings are produced by mixing metal nitride powders with an organosilicon compound or an organosilicon high molecular weight compound as a binder, molding the mixture into a desired shape and heating the formed molding under a non... | 08/14/1979 |
| 4163769 | High thermal conductivity substrate A high thermal conductivity substrate is formed by making a sintered diamond composite and thereafter modifying the electrical properties of the composite by leaching graphite and other non-diamond materials from the composite and subsequently infusing th... | 08/07/1979 |
| 4162284 | Method of producing mechanically strong pellets from non-oxidizable metal oxides A method of producing mechanically strong sintered pellets suitable for consumable use in smelting furnaces from non-oxidizable metal oxides is disclosed. The metal oxide is combined with a carbon-containing material whereafter the formed pellet is sinter... | 07/24/1979 |
| 4162285 | Method for producing a ceramic honeycomb structure having no cracks A ceramic honeycomb structure having no cracks is produced by adding water and a polyhydric alcohol to ceramic starting material powder, shaping the resulting mixture into a honeycomb structure, drying the shaped honeycomb structure at a temperature which... | 07/24/1979 |
| 4161501 | Method of producing mechanically strong metal oxide pellets A method of producing sintered pellets containing metal oxide is disclosed. The pellets obtained are mechanically strong and are produced at substantially less cost than is encountered with known methods.... | 07/17/1979 |
| 4160797 | Process for the deposition of polycrystalline silicon from the gas phase on heated carriers A process for deposition of polycrystalline silicon from the gas phase on ated carrier bodies of carbon, which comprises assembling the carrier bodies from extremely thin flexible graphite foils, heating the bodies to deposition temperature, while contact... | 07/10/1979 |
| 4158684 | Method of making ceramic prosthetic implant suitable for a knee joint A method for fabricating a ceramic prosthesis of high aluminum oxide suite for the tibial plateau of a knee joint with the superior (upper) portion of the prosthesis being of a high density Al2 O3 having a very low porosity and the ... | 06/19/1979 |
| 4158687 | Method for producing heat-resistant composite materials reinforced with continuous silicon carbide fibers A heat-resistant composite material reinforced with continuous silicon carbide fibers is produced by forming a powdery ceramics matrix and the fibers into a composite, and pressing and heating the composite into a sintered composite. The composite materia... | 06/19/1979 |
| 4158685 | Foamed insulation refractory A foamed insulating refractory shape is made by: (1) preparing a slip of water, deflocculating agent, refractory aggregate, at least 7.5% by weight cement, and, optionally, clay; (2) forming a foam of water, foaming agent, and air having a density not ove... | 06/19/1979 |
| 4153491 | Accelerated sintering for a green ceramic sheet A green ceramic sheet material adaptable for accelerated sintering comprising a high alumina ceramic green sheet having an average particle size greater than one micron with a close particle size distribution and being formed into a solid integrated circu... | 05/08/1979 |
| 4152381 | Method for preparing metallated filament-wound structures Metallated graphite filament-wound structures are prepared by coating a continuous multi-filament carbon yarn with a metal carbide, impregnating the carbide coated yarn with a polymerizable carbon precursor, winding the resulting filament about a mandrel,... | 05/01/1979 |
| 4151235 | Production of beta-alumina A method of producing a beta-alumina ceramic article containing a doping addition of magnesium oxide or of magnesium oxide and lithium oxide, comprising the steps of wet-milling a precursor material or emulsification of an already powdered precursor mater... | 04/24/1979 |
| 4151432 | Production of ferrites for magnetostrictive vibrators A ferrite for magnetostrictrive vibrators is produced by the simple process of press forming a preformed structure formed from starting powder of magnetite or a mixture of magnetite and ferric oxide, said powder having an average particle size d (μ) of f... | 04/24/1979 |
| 4150078 | Process for making refractory shapes This application relates to a process for making ceramic shapes from nonplastic size graded ceramic materials comprising the formulation of a unique batch. The batch is processed in a water-cooled pug mill-extruder to prepare a deaired and densified colum... | 04/17/1979 |
| 4148853 | Process for the manufacture of a capacitor dielectric with inner blocking layers For the manufacture of a dielectric with inner blocking layers on the basis of barium titanate smooth fragments, that is a finely ground material after sintering whose composition is equal to or approximately equal to the composition of titanate powder, i... | 04/10/1979 |
| 4148781 | Flexible building sheet materials A flexible building sheet product is prepared by dry molding a slurry comprising predominantly at least one binder component selected from the group consisting of thermoplastic resin emulsions and aqueous solutions of water-soluble polymers, said solution... | 04/10/1979 |
| 4147747 | Method of making a polycrystalline Mn containing ferrite body A method of making a polycrystalline Mn containing ferrite body composed of crystallites which have the (111)-crystallographic planes thereof oriented substantially parallel with each other. The method involves providing a manganese compound, forming a bo... | 04/03/1979 |
| 4146401 | Graphite material having compressibility and recovering property and method for manufacturing the same Acid-treated and water-washed graphite particles are further treated with an aqueous solution of a phosphoric acid or a salt thereof, the expanded by heating to 20 to 70 times (in terms of bulk density ratio) the original graphite particles and the expand... | 03/27/1979 |
| 4141945 | Method of disposing of precipitated silica A method of disposing of silica dust precipitated from metallurgical furnaces producing products high in silicon content by making mechanically strong metal oxide pellets with the silica dust as a binder is disclosed.... | 02/27/1979 |
| 4141948 | Method of making a shaped silicon carbide-silicon matrix composite and articles made thereby A method is described for making a shaped silicon carbide-silicon matrix composite. A confined carbon fiber preform is infiltrated with sufficient molten silicon metal at a temperature in the range of from about 1400° C. to about 1800° C. in an inert at... | 02/27/1979 |
| 4141943 | Method of manufacturing plastic-bonded (LnCo) magnets The invention concerns a method of manufacturing plastic - bonded (LnCo) magnets (Ln = lanthanoid = elements 57 - 71 + yttrium), pulverization of the (LnCo) material being followed by alignment of the magnetic powder by a magnetic field, a compression pro... | 02/27/1979 |
