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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7341656 | Continuous oxidation and distillation process of heavier hydrocarbon materials The present invention provides a way to process heavier hydrocarbons in a relatively low cost and low pressure process using a combination of superheated steam and at least one reaction gas to i) promote oxidation and thermal reaction of heavier hydrocarbons, while ... | 03/11/2008 |
| 7220348 | Method of producing high softening point pitch The present invention provides a way to increase the softening point of heavier hydrocarbons in a relatively low cost and low pressure process using superheated steam to i) increase the carbon yield of the heavier hydrocarbons, while simultaneously ii) removing vola... | 05/22/2007 |
| 7018526 | Carbonized pitch moldings prepared from synthetic mesophase pitch and heat-soaked isotropic pitch The present invention provides carbonized pitch articles and methods for producing the same. Synthetic mesophase pitch is mixed with partially anisotropic pitch, which may be selected from heat-soaked isotropic pitch and heat-soaked mixtures of isotropic pitch and m... | 03/28/2006 |
| 6605208 | Process for reduction of emissions in asphalt production A process and apparatus are disclosed that relate generally to a process for reducing harmful or unwanted emissions during the production of asphalt, such as blue smoke. The process includes the introduction of a pump around of the wax oil fraction for re... | 08/12/2003 |
| 6194344 | Process for preparing carbonaceous material carrying ultrafinely dispersed metal A process for the preparation of a high-softening-point pitch rich in mesopores having a softening point measured by temperature gradient method of 150° C. or higher, a weight loss by heating up to 300° C. of 5 wt. % or less and mesopores of 100 mm... | 02/27/2001 |
| 6036843 | Method for reducing hydrogen chloride emissions from an asphalt air-blowing process In a method for reducing hydrogen chloride emissions from an asphalt blowing process, ferric chloride and/or ferrous chloride are added to the asphalt. A chemical modifier is also added to the asphalt. The asphalt is subjected to a blowing process which p... | 03/14/2000 |
| 5922189 | Process to refine petroleum residues and sludges into asphalt and/or other petroleum products A process for significantly decreasing processing time, reducing capital costs, increasing yield, improving quality, and improving the safety of refining petroleum residues and sludges generated by the oil producers, refineries and re-refiners comprising ... | 07/13/1999 |
| 5507938 | Flash thermocracking of tar or pitch A process for producing high-quality pitches comprising atomizing a preheated feed material of carbonaceous tar and/or pitch, forming an aerosol, contacting the aerosol in a reaction vessel with a flowing, non-reactive gas atmosphere for less than about 1... | 04/16/1996 |
| 5100536 | Method of processing substances A method of processing hydrocarbon substances including coal, heavy crude oil, and bitumen by hydrogenating the hydrocarbon substance with a gas containing from 20%-100% hydrogen at a pressure in the range of from 50 bar to 700 bar and at a temperature in... | 03/31/1992 |
| 5091072 | Process for preparing pitches Commercially attractive continuous processes for the preparation of mesophase pitches for manufacturing high-performance carbon fibers are disclosed. One feature resides in that conversion of a pitch into a mesophase pitch is conducted continuously by usi... | 02/25/1992 |
| 4882139 | Improved production of carbon fibers In a process for the production of carbon fibers from high boiling bituminous substances in which a purified and polymerized concentrated carbon fiber precursor is spun into fibers which are oxidized and then carbonized and optionally graphitized, the imp... | 11/21/1989 |
| 4879369 | Method of removing lignin from tall oil Lignin is removed from a crude tall oil in the production of tall oil fractions suitable for use as chemical ingredients and additives in other products by sparging the crude tall oil at a temperature of between about 350° F. to 400° F. with a carrier g... | 11/07/1989 |
| 4664774 | Low solids content, coal tar based impregnating pitch A novel coal tar based, low solids content, pitch is produced by oxidizing a selected coal tar distillation fraction with air to oxygen at elevated temperatures. This pitch is applicable to end use in which low solids content is desirable. Specifically it... | 05/12/1987 |
| 4565622 | Method of liquefying brown coal A method for the liquefaction of brown coal which comprises effecting primary hydrogenation at a temperature and pressure sufficient to promote the efficient hydrogenation of a slurry prepared by adding an iron-based catalyst and a slurrying solvent to br... | 01/21/1986 |
| 4551225 | High anisotropic pitch An improved process for preparing an optically anisotropic pitch which comprises heating a pitch feed material at a temperature within the range of about 350° C. to 450° C. while passing an inert gas therethrough at a rate of at least 2.5 SCFH/lb of pit... | 11/05/1985 |
| 4075083 | Method for destructive distillation of hydrocarbonaceous materials A method of retorting oil shale which comprises the steps of passing the material in particulate form downwardly as a continuous vertical column of solid material successively through a preheating zone, a distillation zone, a combustion zone, and a residu... | 02/21/1978 |
