Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7163606 | Process for recovering methylene chloride A system for recovering methylene chloride from an aqueous waste stream is disclosed. The system includes a distillation unit, at least one heat transfer unit, receptacles for methylene chloride and waste product, a temperature probe and a controller configured to s... | 01/16/2007 |
| 7153394 | System to isolate dianhydrides A process to isolate dianhydride from an exchange reaction comprises extracting a bisimide/anhydride exchange reaction aqueous phase with an organic solution comprising an exchange catalyst at a first temperature and pressure to form an extracted aqueous phase compr... | 12/26/2006 |
| 6964730 | Purification apparatus and method Disclosed is a purification apparatus and method. The purification apparatus includes: a mobile phase distillation part for distilling a mobile phase; a mobile phase liquefaction part for liquefying the distilled mobile phase; and a purification part disposed betwee... | 11/15/2005 |
| 6589422 | Apparatus and method for extracting biomass Discloses is apparatus for extracting biomass from a biomass supply, including a hollow vessel in which is established a countercurrent flow of biomass in the form of liquid or particles of biomass entrained in a liquid and solvent. The vessel includes an... | 07/08/2003 |
| 6514387 | Rectifying column for extractive distillation of close-boiling or azeotropic boiling mixtures The invention relates to a rectifying column for extractive distillation, comprising a column main section (204) and a raffinate section (205) above said main section, an evaporator (208) situated on the lower end of the column, an inlet (214) disposed be... | 02/04/2003 |
| 6398917 | Apparatus for the purification of commercially available diphenyl-p-phenylenediamine (DPPD) An apparatus for the purification of crude N,N'-diphenyl-p-phenylenediamine (DPPD) in which there is an extraction unit containing a liquid permeable container and an adsorption layer downstream of the container, a solvent evaporator downstream of the ads... | 06/04/2002 |
| 6375802 | Method of retrofitting existing equipment for an improved aromatics separation process An improved process for the recovery of aromatic compounds from a mixture containing aromatic and non-aromatic compounds and method for retrofitting existing equipment for the same is provided. The improved process comprises the steps of recovering aromat... | 04/23/2002 |
| 6001221 | Extraction and drying apparatus Apparatus for condensing moisture from an air stream. The condenser includes concentric cylinders having a common wall. The outer cylinder contains a cooling material, such as water, and upon contact therewith, the air stream is cooled and moisture contai... | 12/14/1999 |
| 5961787 | Solvent extraction apparatus A solvent extraction apparatus which includes a heating plate, a vessel for containing a solvent, an extraction thimble to obtain a sample to be extracted from said vessel and a cooler for condensing evaporated solvent vapors. The cooler is connected to t... | 10/05/1999 |
| 5846387 | On-site manufacture of ultra-high-purity hydrochloric acid for semiconductor processing Highly purified HCl for use in semiconductor manufacturing is prepared on-site by drawing HCl vapor from a liquid HCl reservoir, and scrubbing the filtered vapor in a low-pH aqueous scrubber.... | 12/08/1998 |
| 5776319 | Continuous linear-torroidal extraction method A method for continuously extracting a solute from a carrier medium. A volatile solvent is placed in a lower distillation chamber of a vessel, the vessel including a convergent baffle disposed to separate the vessel into a lower distillation chamber and a... | 07/07/1998 |
| 5776317 | Extractor for soxhlet solid-liquid extraction Extractor (21) has extraction vessel (24) to which reflux line (26) is molded in one piece. Valve (1) which can be opened to allow the extract to flow back from extraction vessel (24) into distillation vessel (22) is sealed into reflux line (26). Valve (1... | 07/07/1998 |
| 5677193 | Method and apparatus for processing a test sample to concentrate an analyte in the sample from a solvent in the sample A method of processing a test sample to concentrate an analyte in the sample from a solvent in the sample includes: a) boiling the test sample containing the analyte and solvent in a boiling chamber to a temperature greater than or equal to the solvent bo... | 10/14/1997 |
| 5632867 | Recovering a relatively volatile component of a solution from a less volatile component, e.g. as in solvent recovery In a solvent recovery plant including a recovery or distillation tower from which solvent product is recovered overhead, an isothermal separator, preferably a cyclone, is used to separate liquid phase contaminant (i.e. oil in a lubricating oil extraction ... | 05/27/1997 |
| 5565070 | Solvent vapor sucking method and solvent recovering apparatus A method for recovering solvent vapor in a manner which requires less power using an apparatus which is smaller in size, has a longer life, and is capable of being operated without reducing recovering efficiency, including locating an inlet of a suction p... | 10/15/1996 |
| 5549794 | Continuous linear-toroidal extraction-distillation apparatus An apparatus (10) for continuously extracting a solute from a carrier medium (102) is provided. The apparatus is formed from a vessel (12) including a convergent baffle (22) separating the vessel into a lower distillation chamber (24) and an upper extract... | 08/27/1996 |
| 5268150 | Concentrator/extractor apparatus having a hydrophobic membrane A concentrator/extractor apparatus for employing solvent to extract a substance from a sample in order to increase the concentration of the substance in less time than prior art apparatuses is disclosed. The disclosed apparatus, and kits including the dis... | 12/07/1993 |
| 5248393 | Solvent reprocessing system A compact solvent reprocessing system for use in a limited physical area. Solvents to be reprocessed is contacted by deionized water in a water wash column and delivered to a distillation column where waste solvent is separated from materials that boil at... | 09/28/1993 |
| 5156812 | Modular solvent extractor/concentrator apparatus with in-line drying adaptor This invention relates generally to laboratory glassware apparatus and particularly to laboratory apparatus and kits thereof. Disclosed apparatus is used to extract and/or concentrate specific substances for analytical purposes from sample liquids by pass... | 10/20/1992 |
| 5098662 | Modular solvent extractor/concentrator apparatus The invention relates generally to laboratory glassware apparatus and particularly to laboratory apparatus and kits thereof. The disclosed apparatus is used to extract and/or concentrate specific substances for analytical purposes from sample liquids by p... | 03/24/1992 |
| 5078974 | Apparatus for making alkali-metal tetraorganylborates Apparatus for the manufacture and recovery of alkali-metal tetraorganylborates. A mixed solvent and liquid/liquid contactor configuration is used in the system which aids in the recovery of the product.... | 01/07/1992 |
| 4590174 | Olefin metathesis catalyst Olefins are converted into other olefins having different numbers of carbon atoms by contact with a catalyst comprising an inorganic refractory oxide support containing at least one of tungsten oxide and molybdenum oxide and a promoting amount of at least... | 05/20/1986 |
| 4434028 | Apparatus for removing organic contaminants from inorganic-rich mineral solids Method and apparatus for removing oil and other organic constituents from particulate, inorganic-rich mineral solids. The method and apparatus are particularly suitable for removing oil from oil-contaminated drill cuttings. The solids to be treated are tr... | 02/28/1984 |
| 4289586 | Solvent recovery method A dirty or otherwise contaminated volatile solvent or other treatment fluid including relatively more volatile non-flammable and relatively less volatile flammable constituents is recovered or reclaimed by boiling it off from its impurities. As the remain... | 09/15/1981 |
| 4204913 | Solvent recovery apparatus A dirty or otherwise contaminated volatile solvent or other treatment fluid including relatively more volatile non-flammable and relatively less volatile flammable constituents is recovered or reclaimed by boiling it off from its impurities. As the remain... | 05/27/1980 |
| 4036701 | Steam distillation apparatus convertible to two separate modes of operation Distillation apparatus for steam distilling of solvents is disclosed in combination with phase separation means which is readily adjustable to accommodate fluids which are either more dense or less dense than water. This is accomplished in the preferred e... | 07/19/1977 |
