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...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 6962616 | Preparation of adsorbents from organic fertilizer and mineral oil and their application for removal of acidic gases from sulfur containing wet gas streams A method of making an adsorbent which includes: a) thermally drying dewatered sewage sludge to form granulated organic fertilizer; b) treating the fertilizer with mineral oil; and c) pyrolyzing the treated fertilizer at temperatures between about 600° C. and about ... | 11/08/2005 |
| 6914034 | Adsorbents for removing heavy metals and methods for producing and using the same Adsorbents for removing anions of a heavy metals comprise a porous carbon in which at least one oxygen-containing compound of iron, copper, and/or aluminum is incorporated. The oxygen-containing compound may be incorporated into the porous carbon by impregnation or ... | 07/05/2005 |
| 6902589 | Method for producing shaped, activated charcoal The invention relates to a method for producing shaped, activated charcoal. According to the method, after being ground, carbon-bearing material, or a mixture of several carbon-bearing materials are rendered homogenous with a binding agent which contains water, or a... | 06/07/2005 |
| 6391429 | Permeable shaped structures of active particulate bonded with PSA polymer microparticulate A fluid permeable composite structure having active particulate bonded together using a pressure-sensitive adhesive (PSA) polymer microparticulate. Use of the PSA polymer microparticulate to bond the active particulate together produces a bonded structure... | 05/21/2002 |
| 6113673 | Gas storage using fullerene based adsorbents This invention is directed to the synthesis of high bulk density high gas absorption capacity adsorbents for gas storage applications. Specifically, this invention is concerned with novel gas absorbents with high gravimetric and volumetric gas adsorption ... | 09/05/2000 |
| 6060424 | High energy density carbons for use in double layer energy storage devices The present invention relates to carbon and methods for preparing same. In particular, this invention relates to the preparation of novel carbons derived from lignocellulosic materials (particularly wood-based lignocellulosic materials) which are useful f... | 05/09/2000 |
| 6043183 | High power density carbons for use in double layer energy storage devices The present invention relates to carbon and methods for preparing same. In particular, this invention relates to the preparation of novel carbons derived from lignocellulosic materials (particularly wood-based lignocellulosic materials) which are useful f... | 03/28/2000 |
| 6033573 | Activated nutshell carbons from agricultural waste Activated carbons derived from nutshells, and for use in adsorption of metallic cations, are prepared utilizing phosphoric acid activation with concurrent oxidation under air. The acid activation is carried out utilizing a one or two-step heating regime s... | 03/07/2000 |
| 6030922 | Synthesizing carbon from sludge The synthesis of carbon, particularly in an activated form, from sludge materials such as composed of biosolids and the like is described wherein the treated material is subjected to processing including chemical activation, light and humidity treatment, ... | 02/29/2000 |
| 5880061 | Active carbon and method for its production Active carbon having a pore size distribution obtained from a nitrogen adsorption isothermal line such that the volume of pores having a pore diameter of less than 15 Å is at least 0.25 ml/g and constitutes at least 40% of the total volume of pores havin... | 03/09/1999 |
| 5736485 | Shaped lignocellulosic-based activated carbon Extruded pellets comprising a majority of activated carbon particles and an organic binder provide improved performance when processed through tumbling equipment while the pellets are in their "green" state, i.e., pellets which are fresh off the extruder ... | 04/07/1998 |
| 5736481 | Shaped lignocellulosic-based activated carbon Extruded pellets comprising a majority of activated carbon particles and an organic binder provide improved performance when processed through tumbling equipment while the pellets are in their "green" state, i.e., pellets which are fresh off the extruder ... | 04/07/1998 |
| 5703003 | Durable regenerable sorbent pellets for removal of hydrogen sulfide from coal gas Pellets for removing hydrogen sulfide from a coal gasification stream at an elevated temperature are prepared in durable form usable over repeated cycles of absorption and regeneration. The pellets include a material reactive with hydrogen sulfide, in par... | 12/30/1997 |
| 5691270 | Shaped lignocellulosic-based activated carbon Extruded pellets comprising a majority of activated carbon particles and a minority of a binder material are disclosed to provide improved performance when processed through tumbling equipment while the pellets are in their "green" state (i.e., pellets wh... | 11/25/1997 |
| 5494880 | Durable zinc oxide-containing sorbents for coal gas desulfurization Durable zinc-oxide containing sorbent pellets for removing hydrogen sulfide from a gas stream at an elevated temperature are made up to contain titania as a diluent, high-surface-area silica gel, and a binder. These materials are mixed, moistened, and for... | 02/27/1996 |
| 5276000 | Preparation for high activity, high density carbon Lignocellulosic carbonaceous material is activated to produce a high activity, high density gas-phase activated carbon under conditions which effectively alter the particle pore volume size distribution to optimize the carbon's mesoporosity. An improved p... | 01/04/1994 |
| 5272126 | Adsorption type packing for gas chromatography and process for producing the same An adsorption type packing for gas chromatography composed of finely divided carbon particles in whole, and having a ratio of nitrogen gas adsorption at a relative pressure of 0.3 (V0.3) to nitrogen gas adsorption at a relative pressure of abou... | 12/21/1993 |
| 4157314 | Granular activated carbon manufacture from sub-bituminous coal treated with dilute inorganic acid: direct activation method Granular activated carbon is manufactured from sub-bituminous coal by crushing and screening the as received coal containing about 10 to about 25% moisture by weight to produce 8/30 mesh granules, treating the granules with a dilute aqueous solution of in... | 06/05/1979 |
| 4149995 | Granular activated carbon manufacture from brown coal treated with concentrated inorganic acid without pitch Granular activated carbon is manufactured from briquettes of about 1× 2" mesh formed from brown coal from which iron material has been extracted and which has a moisture content of about 15% by weight, by crushing and screening the pre-treated coal briqu... | 04/17/1979 |
| 4102812 | Production of carbon from coal granules prepared in a fluid energy mill Granular active carbon having satisfactory adsorbency and hardness characteristics and having a high proportion of its porosity in the below 2000 A range is produced from granules prepared from coal fluid energy milled until not more than 1% of the partic... | 07/25/1978 |
| 4032476 | Granular activated carbon manufacture from sub-bituminous coal mixed with concentrated inorganic acid without pitch Granular activated carbon is manufactured from sub-bituminous coal by crushing and screening the as received coal containing 17% moisture by weight to produce 8/30 mesh granules which are treated by mixing with about 5% by weight of concentrated inorganic... | 06/28/1977 |
| 3951856 | Process for making activated carbon from agglomerative coal Fluidized bed technique for oxidizing normally agglomerative bituminous coal is disclosed. One high rank bituminous coal is prepared for activation by grinding, briquetting and crushing to the 3/4 inch to 4 mesh size. Thereafter, the coal particles are fl... | 04/20/1976 |
