Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 4455334 | Molded gland packing A molded packing, comprising a volute laminate of a composite sheet material compressed into a unified annular form of rectangular cross-section. The composite sheet material is formed by unifying an expanded graphite sheet and a reinforcing core member, ... | 06/19/1984 |
| 4442165 | Low-density thermally insulating carbon-carbon syntactic foam composite A low-density, thermally insulating composite which is ablation resistant and impervious to gases and liquids. The composite is comprised of a carbon-carbon syntactic foam material which is covered and penetrated by pyrolytic carbon, in order to increase ... | 04/10/1984 |
| 4395456 | Inorganic foam A rigid inorganic foam of cellular structure comprising one or more layer minerals, and a method for making inorganic foams comprising gasifying a suspension of one or more layer minerals in a liquid medium, shaping the gasified suspension, and removing t... | 07/26/1983 |
| 4361616 | Laminated board Laminated board structures having excellent mechanical properties made up of a layer of thermal and/or acoustic insulating material strongly bonded to a layer of fibre-reinforced water hardened cement with an aqueous dispersion containing an addition poly... | 11/30/1982 |
| 4336296 | Three-dimensionally latticed flexible-structure composite A three-dimensionally latticed flexible-structure composite, including a three-dimensional lattice formed of longitudinal, lateral and vertical strings and a matrix formed by selectively impregnating the component strings of the aforementioned lattice wit... | 06/22/1982 |
| 4321154 | High temperature thermal insulation material and method for making same A thermal insulation material at high temperature comprising insulating mineral fibres bonded in a matrix, wherein the mineral fibres have a melting point higher than 1.000° C. and represent 15 to 60% of the weight of the material, and wherein the matrix... | 03/23/1982 |
| 4226908 | Water repellent inorganic foam and method for producing the same A water repellent inorganic foam is prepared by foaming and setting a foamable composition comprising an aqueous metal phosphate in the presence of a specific compound having hydrophobic groups and functional groups reactive with said metal phosphate.... | 10/07/1980 |
| 4199628 | Vermicular expanded graphite composite material The present invention relates to a vermicular expanded graphite composite material and to an improved method for preparing such material by blending vermicular expanded graphite with a corrosion resistant resin dispersed in a carrier, vaporizing the carri... | 04/22/1980 |
| 4175022 | Electrolytic cell bottom barrier formed from expanded graphite The thermal insulation in the bottom of an electrolytic cell for the production of metal by electrolysis of metal ore or ore derivatives is protected from attack by the corrosive elements in the electrolytic bath. The protection is provided by a layer of ... | 11/20/1979 |
| 4131820 | Secondary electron multiplication target A secondary electron multiplication target for a secondary electron conduction type which comprises a conductive support layer and a secondary electron emitting layer deposited on the support layer. This secondary electron emitting layer is a porous layer... | 12/26/1978 |
| 4129195 | Diaphragm for speaker A diaphragm for a dynamic cone speaker which is composed of a porous metal produced from a metal such as nickel, wherein a layer, such as of aluminum foil, is disposed on a surface of the porous metal to eliminate the gas permeability of the porous metal.... | 12/12/1978 |
| 4128138 | Diaphragm for speaker A diaphragm for a dynamic cone speaker which is composed of a porous metal produced from nickel powder wherein a vinyl chloride sheet is disposed on the surface of the porous metal to eliminate the gas permeability of the porous metal.... | 12/05/1978 |
| 4039297 | Heat insulating particles The present invention relates to improved heat insulating particles with a high heat insulating effect and high mechanical strength. The particles are smooth cells formed around hollow or solid grains of a low heat-conducting material such as silica, alum... | 08/02/1977 |
| 3980105 | Laminated article comprising pyrolytic graphite and a composite substrate therefor A laminated article of hollow, circular shape includes an outer layer of relatively hard and strong carbonaceous material, an intermediate layer of highly deformable carbonaceous material disposed within the outer layer, and an inner layer of pyrolytic gr... | 09/14/1976 |
| 3969131 | Coated graphite members and process for producing the same Composite members comprising a substrate of fine grained istropic graphite having a density of at least about 1.75 gr/cc, a coefficient of thermal expansion of from about 7.5 to 8.3 inch per inch per °C×10-.sup.6, in which the grains are of a... | 07/13/1976 |
| 3955019 | Cuspated sheet forming A laminate comprising a core consisting of a cuspated sheet consisting of a series of hollow projections projecting upwardly and downwardly from the median plane of said sheet and wherein the outer tips of the projections on the ends furthest from the med... | 05/04/1976 |
