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4468281 |
Silicon ribbon growth wheel and method for heat flow control therein
A silicon ribbon growth wheel having a thermal resistance zone between an outer silicon contacting surface and an inner cooling fluid contacting surface to control rate of heat flow from the outer...
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4451424 |
Method of gelling cast, polysulfone membranes
Polysulfone cast films, including polyethersulfone cast films, are partially gelled with mineral acid prior to or during the conventional water gelation to control the porosity of and improve the...
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4389357 |
Method for preparing thermosetting resins
Method and apparatus for preparing a thermosetting resin for further processing. The resin is poured from a batch reactor onto a continuously moving conveyor belt to form a layer of about 2 to 4...
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4363769 |
Method for manufacturing thin and flexible ribbon wafer of _semiconductor material and ribbon wafer
A method for manufacturing a thin and flexible ribbon wafer of semiconductor material such as germanium, silicon, selenium, tellurium, PbS, InSb, ZnTe, PbSe, InAs, InP, GaSb, PbTe, ZnS, Bi 2 Te 3...
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4353958 |
Green ceramic tapes and method of producing them
Green ceramic tapes are prepared which comprise a finely divided ceramic powder and a water-compatible polyurethane resin binder. The green tapes are prepared by casting a water-based slip...
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4311657 |
Method and apparatus for fabricating sheets of thermoplastic material
The invention relates to a method and apparatus for fabricating sheets of thermoplastic or thermosetting material whereby said material in a non-hardened condition is fed into the space between the...
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4284444 |
Activated polymer materials and process for making same
This invention concerns non-porous, polymeric articles having active properties, and methods for producing such articles. Plastic, rubber, or other natural and synthetic polymeric articles are...
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4283363 |
Process for manufacture of plastic sheets
A process for making sheets of plastic material of high optical quality by casting the plastic material or a mixture of its components on a flat, moving substrate is disclosed. According to the...
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4262732 |
Apparatus and process relating to manufacturing of a filament directly from a molten material
The invention relates to an improvement of a manufacturing process for making a filament directly from a molten material. The process consists of the ejection of a liquid filament which solidifies...
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4259273 |
Formation of solid layers of material
A process for forming a solid layer of intumescent material from a fluid material which comprises the steps of pouring the fluid material onto a mold and evaporating the liquid from the fluid...
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4218280 |
Method of cross-linking polyvinyl alcohol and other water soluble resins
A self-supporting sheet structure comprising a water soluble, non-cross-linked polymer such as polyvinyl alcohol which is capable of being cross-linked by reaction with hydrogen atom radicals and...
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4205109 |
Flexible anti-skid material and method of making same
A flexible anti-skid material for application to various outdoor and indoor surfaces to produce a long lasting, low-cost, non-skid waterproof surface is formed of a smooth layer of paint adhered to...
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4185063 |
Shaping and stretching aqueous formic acid solutions of polypyrrolidone, filament and film products
A method of preparing shaped polypyrrolidone articles having a high degree of tensile strength comprising forming said articles from solutions of polypyrrolidone in hydrous formic acid and drawing...
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4129559 |
Reverse osmosis anisotropic membranes based on polypiperazine amides
Disclosed are reverse osmosis anisotropic gel-type membranes having the structure: ##STR1## WHEREIN N IS A WHOLE NUMBER; A is a divalent group derived from piperazine and having the structure:...
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4123424 |
Polymeric piperazinamides and membranes for reverse osmosis made therefrom
Polymeric piperazinamides suitable for use in reverse osmosis membranes. These polymeric piperazineamides consist essentially of the repeating unit ##STR1## wherein x is zero or a whole number from...
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4111631 |
Extrusion device having intermediate extruder
An extrusion device, comprises an extruder housing, having a cylindrical interior wall and a cylindrical rotor rotatable in the wall at spaced relationship from the interior wall of the housing, so...
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4108714 |
Process for producing plate-shaped silicon bodies for solar cells
Molten silicon is controllably fed into a nip between spaced-apart rollers, converted into a wide ribbon of a desired thickness by passing through such nip and then solidified. The solidified...
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4102663 |
Method for manufacturing hollow and solid ingots
Disclosed is a method and apparatus for forming hollow and cylindrical ingots of amorphous or fused silica and other ingot materials. The ingot is formed from a melt on a deposition surface which...
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4047917 |
Apparatus for the manufacture of plastics film by casting on a floating glass ribbon
An apparatus for making films, sheets or plates of a transparent plastics material of high optical quality comprises means for depositing a solution, molten mass or reaction mixture which yields...
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4020141 |
Method of making heat-sealable, heat-shrinkable, biaxially oriented polyester film
A heat-sealable, heat-shrinkable, biaxially oriented polyester film is provided which is usable in making shrink packages having improved seals and improved optics by reason of having: A...
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4016234 |
Paper-backed acoustical tile
An acoustical tile comprising a relatively thin, flat body of acoustical composition including fibrous material and a binder, and a paper backing affixed thereto having a fire-retardant material...
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3998917 |
Ceramic compositions and articles made therefrom
This invention relates to slurry compositions which are adapted for the formation of ceramic articles. The compositions comprise ceramic particulate matter blended with an aqueous dispersion of an...
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3990876 |
Manufacture of plastics sheets
An improved method of making films, sheets or plates of a transparent plastics material of high optical quality comprises depositing a solution, molten mass or reaction mixture which yields the...
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3972764 |
Plastic book cover and method of making
An improved method of making hard and semi-rigid book covers, and the product obtained, provides a multi-layer plastic book with any desired ratio of flexibility to stiffness in the different parts...
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3966686 |
Aromatic polyamide-type films
Aromatic polyamide-hydrazide films, consisting of p-benzamide p-phenylene terephthalamide and/or terephthaloyl hydrazide recurring units, as major chain constituents, are removed from inorganic...
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3966685 |
Difficultly inflammable threads, fibers and films of polyesteramides and process for obtaining them
The invention concerns new difficulty inflammable polyesteramide filaments, threads, fibers and films. These filaments, threads, fibers or films consist of a polymer obtained from the reaction of...
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3963672 |
Flame-retardant polyvinyl fluoride film
A flame-retardant polyvinyl fluoride film is prepared by incorporating therein sodium, potassium, zinc, magnesium or aluminum antimonate.
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3960585 |
Reducing H.sub.2 S-emission from hot cast sulfur-asphalt mixtures
When cast sulfur-asphalt compositions, e.g., sulfur-asphalt-aggregate pavements and construction articles, are being prepared by mixing and/or heating mixtures comprising sulfur and asphalt at...
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3950470 |
Process for the fabrication of sintered panels and panels resulting from the application of this process
The invention pertains to a panel manufacturing process comprising the steps of spreading in succession on a stationary or mobile support a layer of an alkaline silicate mixture, followed by a...
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3933561 |
Process for manufacturing ultrathin polymer membranes and products derived therefrom
Unsupported ultrathin polymer film is made in bulk form by floating the film on a bath, transferring the floating film to a release substrate, drying the resulting film/substrate composite,...
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3894134 |
Method of making reinforced polyester sheets
A low shrink, chemically thickened, fibrous reinforced, cureable polyester resin mat is prepared by first formulating and then combining two viscosity stable portions of the ingredients, one...
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3876485 |
Method and apparatus of producing plastic coated fabric conveyor belting
A method and apparatus is disclosed for manufacturing reinforced urethane belting wherein liquid polyurethane is deposited at one end of a generally convex arcuate flight portion of an endless...
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3858642 |
APPARATUS FOR DELIVERING METAL TO A ROTATING CONTINUOUS CASTING DRUM
A method and apparatus for drum casting metal strips from a molten metal such as lead containing reactive alloying additives. The apparatus comprises a feed trough having a system of holding and...
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3812226 |
METHOD FOR PRODUCING OBJECTS FROM A MOLTEN CERAMIC PRODUCT
Method and device for producing objects from a continuous stream of molten ceramic product in which a shower of particles of the product is produced by allowing the stream of product to fall onto a...
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3812229 |
PROCESS FOR FORMING CERAMIC SANITARY WARE HAVING A STONE-LIKE APPEARANCE
This invention comprises a process for making china or ceramic sanitary ware such as toilets, lavatories, bidets, and urinals, and similar articles which are provided with an appearance resembling...
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3709648 |
APPARATUS FOR THE PRODUCTION OF BLOCKS FROM SODIUM HYDROXIDE SOLUTION
Solid blocks are formed from sodium hydroxide solution by supplying molten lye by gravity feeding to a vertical cooling shaft and cooling the solution from above in repeated incremental steps while...
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3705778 |
PLASTIFYING APPARATUS
A plastifying apparatus is disclosed. A rotatable roller has arranged angularly spaced with reference to its periphery a plurality of gap-forming elements each of which defines with the periphery a...
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3681485 |
METHOD OF COMBINING FLUID COMPONENTS TO CONTINUOUSLY PRODUCE POLYURETHANE FORM
Method of processing a fluid compound from two or more chemical charges for producing foam material, such as polyurethane foam, for the manufacture of products having a cellular structure, which...
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3655308 |
APPARATUS FOR MAKING PROGRESSIVE INJECTION MOLDED SHEET
A plastic sheet is disclosed which is made up of injection molded sections molded progressively and joined together at edges thereof during the molding process. The sheet may have integral bristles...
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3653925 |
METHOD OF PREPARING GLUTEN CONTAINING FILMS AND COATINGS
Dried wheat gluten is dispersed in an alkaline medium consisting of alcohol and water. The dispersion is applied to solid substrates including food and dried to form an edible coating. The coating...
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3642498 |
METHOD OF PREPARING KERATIN-CONTAINING FILMS AND COATINGS
Isolated keratin is dispersed in an alkaline medium consisting of alcohol and water. The dispersion is applied to solid substrates including food and dried to form an edible coating. The coating...
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3632467 |
UNCURED POLYVINYL CHLORIDE PLASTISOL TAPE COATED WITH PVC PLASTISOL ADHESIVE LAYER
Vinyl plastisol compositions comprising composites of two different vinyl halide resin plastisols wherein there is an adhesive plastisol layer of a mixture of a vinyl halide resin, a liquid...
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3551244 |
METHOD OF PRODUCING AN ULTRATHIN POLYMER FILM LAMINATE
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3522836 |
METHOD OF MANUFACTURING WIRE AND THE LIKE
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3509937 |
CONTINUOUS HORIZONTAL CASTING
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3503773 |
PROCESS FOR THE PRODUCTION OF A CASTING LAYER FOR THE MANUFACTURE OF FILMS AND SHEETS
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3501560 |
METHOD AND APPARATUS FOR PRODUCING FIBERS FROM MOLTEN METALS OR CERAMICS
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3484511 |
PROCESS FOR CONTINUOUSLY MELTING AND SOLIDIFYING REFRACTORY MATERIALS
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3471360 |
TRANSFER ELEMENTS AND PROCESS FOR PREPARING THE SAME
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3437677 |
N,N'-DIOLEYLDITHIOOXAMIDE AND POLYVALENT METAL COMPLEXES THEREOF
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