Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 4087514 | Process for desulfurizing char A process for reducing the sulfur content of char by means of a basic molten bath of an alkali metal or alkaline earth metal salt of a hydroxyaryl or an alcohol.... | 05/02/1978 |
| 4083940 | Coal purification and electrode formation A process for purification of coal comprises forming an aqueous leaching solution containing nitric and hydrofluric acid. Impurities are removed by contacting coal having a mesh size not greater than 8 (Tyler Series) with the leaching solution for a perio... | 04/11/1978 |
| 4069056 | Photopolymerizable composition containing group Va aromatic onium salts Cationic polymerization of a variety of organic materials such as vinyl monomers, prepolymers, cyclic ethers, cyclic esters, cyclic amines, cyclic sulfides and organosilicon cyclics can be achieved by the use of certain radiation sensitive aromatic onium ... | 01/17/1978 |
| 4067767 | Liquid phase coking of spent kraft pulping liquors An improved process for treating spent Kraft wood pulping liquors by coking the liquors after reducing the pH thereof with SO2 and recovering the sulfur contained in the resulting coke by contact with hydrogen preheated to temperatures in the r... | 01/10/1978 |
| 4066699 | Process for the hydrogenation of nitrated paraffins using a palladium on carbon catalyst characterized by a low ash and a low halide content Nitrated hydrocarbons, such as nitroparaffins, are reduced to amines by use of palladium on a carbon catalyst characterized by low ash and low halide.... | 01/03/1978 |
| 4031189 | Process for preparing composition containing carbon and low sulfur, nitrogen and ash content Process for the preparation of a composition comprised mainly of carbon and containing only a small amount of ash, nitrogen and sulfur, said process comprising: A. drying a hydrous soot with hot flue gas of about 600° C in a direct current-operated dryer... | 06/21/1977 |
| 4025610 | Method and apparatus for denitrifying coke A grain coke is packed in a vertical furnace between a pair of opposite electrodes for passing current through the coke, thus heating the same to a temperature of above 1400° C, preferably 1500° C for more than 10 minutes. Coke is loaded into the furnac... | 05/24/1977 |
| 4011303 | Process for desulfurizing sulfur-bearing coke Sulfur-bearing coke is desulfurized by heating it and reacting it with dilute sulfur vapor to form carbon disulfide. The reaction will proceed utilizing air-polluting sulfur components in the coke, thereby removing such components to provide a relatively ... | 03/08/1977 |
| 3993455 | Removal of mineral matter including pyrite from coal Mineral matter, including pyrite, is removed from coal by treatment of the coal with aqueous alkali at a temperature of about 175° to 350° C, followed by acidification with strong acid.... | 11/23/1976 |
| 3984519 | Process to transport carbon from a zone to another one, by means of a carrier fluid acting inside a closed system, particularly for the reprocessing of nuclear fuel elements having a graphite structure A method is disclosed for eliminating carbon from nuclear fuel elements in the reprocessing thereof in a closed system wherein such carbon is caused to combine with hydrogen to form methane in an attack zone, and the methane is then caused to flow from th... | 10/05/1976 |
| 3972985 | Reduction of deposits in carbon black reactors Deposits in a carbon black reactor are reduced by passing feed oil, quench water and/or liquid fuel to the reactor through a magnetic field prior to introduction into the reactor.... | 08/03/1976 |
| 3969489 | Process for recovering synthetic diamonds from pressed runs A diamond synthesis run containing synthetic diamonds, graphite and catalyst from a high pressure temperature diamond process is treated with bromine to remove substantially all of the graphite. After bromination, the run is subjected to electrolysis to r... | 07/13/1976 |
| 3966487 | Pyrolization The invention relates to the process for recovery of carbon black of controlled quality from scrap-rubber vulcanizates. Scrap rubber is selected on the basis of the quality of the carbon black used in the preparation of the rubber from which the scrap is ... | 06/29/1976 |
| 3961025 | Method of carbonizing a substance comprising cellulose A method of treating municipal waste which contains cellulose comprises combining the waste with an alkali metal meta-aluminate, such as sodium aluminate, to form a carbonizing mixture and then heating the carbonizing mixture, in air, to carbonize the was... | 06/01/1976 |
| 3957958 | Carbon purification process In accordance with a preferred embodiment of this invention, a low-sulfur, low-ash, graphitic carbon, which is useful in metallurgical and electrical applications, is formed. The first step is dissolving coke or coal in an iron melt containing about 4% si... | 05/18/1976 |
| 3954674 | Process and device for calcinating desulfurization of green cokes with high sulfur content by the preparation of high quality and density desulfurized cokes This invention relates to a process for the simultaneous desulfurization and calcination of "green coke."... | 05/04/1976 |
| 3953583 | Grit removal from carbon black Carbon black is produced in a generally vertically extending reactor in which a feed oil is introduced at the top. Combustion gases are introduced into an upper region of the reactor to supply sufficient heat to decompose the oil to form carbon black. Gri... | 04/27/1976 |
| 3950503 | Calcination-desulfurization of green coke with concurrent sulfur production In a staged calcination process a sulfur-containing green coke is converted to a low-sulfur-content coke and two off-gas streams, one which contains sulfur dioxide and another which contains hydrogen sulfide. In one stage the green coke is calcined and pa... | 04/13/1976 |
| 3944513 | Purification of polymer dispersions with adsorbent carbon particles Aqueous dispersions of particulate vinyl polymers, such as acrylic polymers, particularly those prepared by emulsion polymerization, which undesirably may be caused to coagulate or agglomerate to form larger particles when subjected to purification proced... | 03/16/1976 |
| 3942956 | Process for eliminating nitrogenous ingredients from solid fuel A nitrogenous ingredient is eliminated from solid fuel, for example, coal, by treating in a treating chamber, the coal with a treating gas having a predetermined temperature and composition at a temperature of 650° to 1200°C, the treating gas being prep... | 03/09/1976 |
| 3941586 | Method and apparatus for regenerating cold traps within liquid-metal systems Oxide and hydride impurities of a liquid metal such as sodium are removed from a cold trap by heating to a temperature at which the metal hydroxide is stable in a molten state. The partial pressure of hydrogen within the system is measured to determine if... | 03/02/1976 |
| 3933596 | Desulfurization of coke Coke is desulfurized by calcining coke at a temperature of 1600° - 2200° F. in admixture with sodium carbonate, followed by direct contact with phosgene or a mixture of carbon monoxide and chlorine at a temperature of 1200° - 1800° F. to produce coke ... | 01/20/1976 |
| 3932596 | Method for separating and recovering kish graphite from mixtures of kish graphite and fume Kish graphite can be separated from fume in kish graphite-fume mixtures and can be recovered as a clean usable product by screening the kish graphite-fume mixtures to separate the mixtures into a screen overflow and screen underflow. The screen overflow i... | 01/13/1976 |
