Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 5707916 | Carbon fibrils A volume of carbon fibrils that includes a multiplicity of fibrils having a morphology consisting of vermicular tubes that are free of a continuous thermal carbon overcoat and have graphite layers that are substantially parallel to the fibril axis and a p... | 01/13/1998 |
| 5667593 | Modified polydextrose and process therefor An improved, water-soluble polydextrose containing 0.3 mol % or less of bound citric acid, a process therefor, and foods containing same.... | 09/16/1997 |
| 5411594 | Bei hydrolysis process system an improved process for the continuous hydrolysis saccharification of ligno-cellulosics in a two-stage plug-flow-reactor system An improved two-stage dilute-acid hydrolysis process and apparatus the continuous saccharification of ligno-cellulosic biomass, or other cellulosic material feedstocks, with higher efficiency and better economics than known art, is disclosed. It comprises... | 05/02/1995 |
| 5374316 | Method and apparatus for separation of sugarcane pith from rind An improved apparatus and method for separating milled sugarcane pith from flattened rind upon discharge from a depithing station. The method includes dividing the discharge by a fixed deflector, preferably with a blunt upstream edge, into a primary pith ... | 12/20/1994 |
| 5372702 | Composition for use in the production of composite carbon materials, composition carbon material produced therefrom, and process for producing the same The improved composition for use in the production of composite carbon materials comprises a mesophase pitch containing at least 80% of an optical anisotropic phase and having a softening point of no higher than 250° C., and sulfur present in an amount o... | 12/13/1994 |
| 5364524 | Process for treating heavy oil A process for treating heavy oil by contacting the oil with hydrogen in a reactor containing an activated carbon catalyst having a specified range of Alpha value, and average pore diameter, and pore distribution, to reduce the content of nickel and vanadi... | 11/15/1994 |
| 5362329 | Process for producing heat-moisture treated starch A process for producing heat-moisture treated starch by treating starch in a pressure vessel resistant to both internal and external pressure and equipped with a vacuum line and pressure-steam line. The process comprises treating the starch in the pressur... | 11/08/1994 |
| 5356846 | Hydrorefining catalyst containing ruthenium sulphide, its synthesis and hydrorefining process using the said catalyst The present invention relates to a hydrorefining catalyst containing ruthenium sulphide including the synthesis thereof and also to a process for hydrorefining hydrocarbon feedstocks using the aforementioned catalyst.... | 10/18/1994 |
| 5350456 | Integrated process for producing crystalline fructose and a high fructose, liquid-phase sweetener An integrated process is disclosed which produces both crystalline fructose and a liquid-phase sweetener such as High Fructose Corn Syrup from a feed stream comprising dextrose. A portion of the dextrose in the feed stream is isomerized to fructose and th... | 09/27/1994 |
| 5338441 | Liquefaction process The present invention relates to a catalytic process for converting a solid carbonaceous material, such as coal, to a liquid product in the presence of hydrogen. More particularly, this invention relates to a coal liquefaction process wherein a mixture of... | 08/16/1994 |
| 5334253 | Solution of certain five and six carbon atom carbohydrates A method for dissolving sorbitol, xylitol, mannitol, glucose and gluconic acid. Effective agents are dimethylsulfoxide, dimethylformamide or dimethylacetamide.... | 08/02/1994 |
| 5326405 | Solid lactulose The present invention is concerned with a method for the preparation of crystal-water-free crystalline lactulose by subjecting an aqeous solution or suspension of lactulose to simultaneous reduction of the water content by evaporation and continuous stirr... | 07/05/1994 |
| 5318635 | Continuous coupled jet-cooking/spray-drying process and novel pregelatinized high amylose starches prepared thereby A continuous coupled jet-cooking/spray-drying process for processing inherently water-dispersible or water-soluble crystalline polymers, such as starches, polygalactomannan gums, and fully hydrolyzed polyvinyl alcohols, is disclosed. It involves the steps... | 06/07/1994 |
| 5306416 | Process for making a blended lubricant A blended mineral oil lubricant is made having a higher viscosity index than predicted by calculating the viscosity index from an ASTM standard method designated D 341-87 or by calculating the average of the actual VI based on the proportion of each compo... | 04/26/1994 |
| 5290433 | Froth washer The washer comprises an open-topped vessel having a tube mounted vertically and centrally therein. Post-primary bitumen froth is fed to the upper end of the tube. Pairs of down throw and up throw propellers mounted to rotate in the tube act to shear the f... | 03/01/1994 |
| 5288394 | Process for the prevention of polymer formation in compressor systems An improved process for inhibiting the formation and deposition of polymer-based fouling materials after caustic scrubbing of hydrocarbon streams contaminated with oxygenated compounds with a basic washing solution having a pH>7 comprising adding to the h... | 02/22/1994 |
| 5286299 | Apparatus and method for providing reduced crystal damage in a sugar centrifugal An apparatus and method for providing reduced crystal damage in a sugar centrifugal includes provisions for avoiding scratching and other crystal damage by eliminating asperities and sharp edges at the transition between the screening zone and the dischar... | 02/15/1994 |
| 5286298 | Device and method for reducing crystal impact damage and lump formation in a sugar centrifugal An apparatus and method for reducing sugar, crystal impact damage and lump formation in a centrifugal provides a resilient barrier ring which absorbs most of the impact energy of the crystals and which deflects the crystals so they are not struck by trail... | 02/15/1994 |
| 5286373 | Selective hydrodesulfurization of naphtha using deactivated hydrotreating catalyst Naphtha is selectively hydrodesulfurized using deactivated hydrotreating catalyst to remove sulfur while minimizing loss in octane level due to olefin saturation.... | 02/15/1994 |
| 5281279 | Process for producing refined sugar from raw juices A process for producing refined sugar directly from plants of cane or beet raw juices which bypasses the traditional manufacturing of an intermediate product called "raw sugar". After treatment of the sugar juice with a flocculant, the juice has pressuriz... | 01/25/1994 |
| 5277796 | Pretreating oil shale with organic acid to increase retorting yield and process efficiency A process for pretreating oil shale prior to retorting by contacting with an organic acid, such as formic and acetic acids, at temperatures below about 100° C. for a period of time sufficient to react at least a portion of the oil shale carbonates and se... | 01/11/1994 |
| 5269849 | Apparatus and method for reducing lump formation and crystal impact damage in a sugar centrifugal An apparatus and method for reducing sugar, crystal impact damage and lump formation in a sugar centrifugal includes a resilient deflector ring which absorbs most of the impact energy of the crystals while deflecting the crystals out of the path of traili... | 12/14/1993 |
| 5266282 | Selective liquid/liquid extraction of yttrium from other rare earths values Yttrium is selectively separated from other rare earth values by contacting a mixed aqueous solution thereof that contains nitrate ions with a water-immiscible organic phase which includes a selective extractant for such other rare earth values, whereby s... | 11/30/1993 |
| 5266184 | Process for increasing pitch yield from coal tar Described is a preferred process for obtaining an increased pitch yield from the distillation of crude coal tar material. The process includes treating a crude coal tar material by reaction with formaldehyde, followed by distillation of the coal tar to af... | 11/30/1993 |
| 5266189 | Integrated low severity alcohol-base coal liquefaction process An improved, low severity coal liquefaction process is disclosed. In accordance with the process, coal is first decarboxylated and demineralized with hot sulfurous acid. The decarboxylated coal is then liquefied in the presence of an alcohol and an alkali... | 11/30/1993 |
| 5259947 | Solvated mesophase pitches This invention relates to low melting solvated mesophase pitches which are suitable for spinning into carbon fibers. The solvated mesophase pitches have a lower melting point than conventional mesophase pitch but remain substantially anisotropic. The solv... | 11/09/1993 |
| 5256278 | Direct coal liquefaction process An improved multistep liquefaction process for organic carbonaceous mater which produces a virtually completely solvent-soluble carbonaceous liquid product. The solubilized product may be more amenable to further processing than liquid products produced ... | 10/26/1993 |
| 5254174 | Method for preparing a mixture of saccharides A method for preparing a mixture of fructose, glucose and compounds of the general formula GFn, wherein G is glucose and F is fructose and n is an integer. The mixture is recovered from plant tubers or roots by means of a method which does not ... | 10/19/1993 |
| 5252136 | Sugar composition comprising soluble fibre A sugar composition consisting of from 90 to 99% by weight sugar and from 10 to 1% by weight of a non-gelling water-soluble dietary fibre. The sugar composition has substantially the properties of normal sugar, but contains a significant amount of dietary... | 10/12/1993 |
| 5248407 | Storage stable polymer modified asphalt paving binder Paving binders, especially hot mix paving mixtures, having excellent storage stability, reduced binder runoff, and high temperature viscosity are formed by adding a copolymer of ethylene with an alkyl acrylate or vinyl acetate and a neutralized sulfonated... | 09/28/1993 |
| 5248408 | Catalytic cracking process and apparatus with refluxed spent catalyst stripper A fluidized catalytic cracking process and apparatus operates with a single or multi- stage refluxed catalyst stripper. Recycle, or reflux, of stripped catalyst to the stripping zone improves stripping. Preferably, a two stage hot stripper is used. Additi... | 09/28/1993 |
| 5248413 | Process for removing sulfur and producing enhanced quality and environmentally acceptable products for energy production from coal A process for producing enhanced quality adsorbent carbons and environmentally acceptable materials for energy production from coal includes an initial step of physically cleaning the coal to remove organic sulfur and mineral tailings. Next, a coal slurry... | 09/28/1993 |
| 5242577 | Radial flow liquid sprayer for large size vapor flow lines and use thereof A process and apparatus for spraying a liquid into a flowing vapor stream is disclosed. Multiple nozzles for injection of a liquid are radially distributed about a pipe containing a flowing vapor stream. The nozzles are arranged so that the cone shaped sp... | 09/07/1993 |
| 5242580 | Recovery of hydrocarbons from hydrocarbon contaminated sludge A process is disclosed for the removal of hydrocarbons such as bitumen or heavy fuel oil from hydrocarbon contaminated sludge, or particulate solid material or the like non-homogenous material after appropriate conditioning, such as by ball milling, with ... | 09/07/1993 |
| 5240591 | Membrane process for separating a mixture containing dewaxed oil and dewaxing solvent A charge containing dewaxed oil/dewaxing solvent may be treated to effect separation of components by a thermally cross-linked hydrocarbon-derived elastomer membrane, typified by polybutadiene.... | 08/31/1993 |
| 5234579 | Membrane process for treating a charge containing dewaxing solvent and dewaxed oil Dewaxed oil containing dewaxing solvent from solvent dewaxing is treated by contact with a separating elastomer membrane to yield a retentate containing increased content of dewaxed oil and decreased content of dewaxing solvent and a permeate which contai... | 08/10/1993 |
| 5228982 | Liquefaction of decarboxylated carbonaceous solids A composition consisting essentially of a carbonaceous solid containing at least one carboxyl group is heated with subcritical liquid water at decarboxylation conditions including a temperature of at least about 300° F. to substantially decarboxylate the... | 07/20/1993 |
| 5229086 | Removal of molybdenum from uranium-bearing solutions A process for removing molybdenum from uranium bearing solutions reduces molybdenum contamination of uranium product. The process employs solvent extraction techniques to remove molybdenum by using a molybdenum-selective extraction reagent of the chelatin... | 07/20/1993 |
| 5228977 | Method of producing asphalt having an increased penetration and penetration index This invention relates to a method for producing asphalt that has improved low temperature properties. More specifically, the penetration and Penetration Index of an asphalt can be increased if the asphalt is heat soaked in the presence of a dehydrogenati... | 07/20/1993 |
| 5225070 | Oxygenated pitch and processing same A method is provided which includes infusing oxygen into pitch material without stabilizing the oxygen-infused pitch material. In addition, the invention includes further processing steps (including heat stabilization in either an inert atmosphere or an o... | 07/06/1993 |
