Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7431805 | Method and apparatus for simultaneous heat and mass transfer utilizing a carrier-gas at various absolute pressures A method, system, and apparatuses for simultaneous heat and mass transfer utilizing a carrier-gas at various absolute pressures are described. A method may include: thermally coupling at least two continuous contacting apparatuses together; varying the pressure betw... | 10/07/2008 |
| 7416643 | Solar water desalination/purification device A solar water desalination and purification device includes an outer liquid-tight containment and an inner liquid-tight containment disposed within the outer containment. The outer containment collects liquid that forms from condensing water vapor that evaporates wi... | 08/26/2008 |
| 7347413 | Tray column and method for mass transfer in a tray column A tray column is proposed which includes column trays, two or more supports which are arranged on the underside of the column trays and support them and a bearing ring for the column trays on the i... | 03/25/2008 |
| 7282118 | Method for production of easily polymerizable substance and purification apparatus This invention resides in providing a method for the prevention of possible polymerization of the easily polymerizable substance during the purification thereof by a column provided with (a) at least one tray directly fixed to a support ring with a bolt and a nut an... | 10/16/2007 |
| 7264695 | Systems and methods for solar distillation The present invention is directed to a solar powered distillation system and method. The solar powered still may have an impermeable nonporous membrane that may be extruded, molded, vacuum formed or sprayed-on. The membrane may be installed in a lightweight basin as... | 09/04/2007 |
| 7258767 | Solar dew tube The invention pertains to a device for the condensation of water from an aqueous liquid by using a temperature gradient, which device includes: (a) a vapor chamber that can be brought in contact with a condensation compartment wher... | 08/21/2007 |
| 7241365 | Material for a facility for the production of anhydrous formic acid The invention relates to an apparatus and a process for the preparation of anhydrous or substantially anhydrous formic acid. This apparatus is constructed partly or entirely of substantially zirconium-free materials. The extractant employed is a liquid of the genera... | 07/10/2007 |
| 7153395 | Systems and methods for solar distillation The present invention is directed to an improved solar powered distillation system and method. The solar powered still may have a membrane that is extruded, molded, or sprayed-on. The membrane may be installed in a lightweight basin as a liner resulting in improved ... | 12/26/2006 |
| 7108769 | Solar distillation loop A solar distillation loop apparatus includes a first pipe section disposed on a ground surface, the first pipe section including a substantially straight portion and elevated portions on each end of the substantially straight portion, an impure water inflow coupling... | 09/19/2006 |
| 7048905 | Process for the production of hydrogen peroxide Process for the production of concentrated aqueous solutions of hydrogen peroxide, comprising the following steps: (a) feeding to a reactor containing a catalyst based on palladium and platinum, heterogeneous and maintained in dispersion in a liquid reaction medium:... | 05/23/2006 |
| 6966973 | Apparatus and process for producing (meth)acrylic acid The present invention provides an apparatus for producing (meth)acrylic acid and a process for producing (meth)acrylic acid with this apparatus wherein the apparatus enables the production of (meth)acrylic acid stably for a long period of time by effectively inhibit... | 11/22/2005 |
| 6936724 | Process for producing epsilon-caprolactone A process produces ε-caprolactone by the oxidation of cyclohexanone by feeding a crude reaction mixture to a first distillation column; distilling off a first distillate containing low boiling components including unreacted cyclohexanone from the top of the first d... | 08/30/2005 |
| 6887344 | Compact wastewater cleaning apparatus A compact, self-contained apparatus for treating wastewater containing as impurities and pollutants various non-volatile (at water boiling points) fluids such as greases, oils and soaps, a vessel for collecting the wastewater, a heating chamber including electric he... | 05/03/2005 |
| 6884324 | Column for concentrating phthalic anhydride To improve the columns used so far for producing phthalic anhydride, and to make them less expensive and easier to install, it is proposed that in the column for concentrating phthalic anhydride two distillation stages are arranged, wherein the removal of the low-bo... | 04/26/2005 |
| 6797124 | Solar distillation unit A solar distilling apparatus employs anthracite coal as a heat-absorbing medium. Greenhouse roof elements rest over a gutter that is isolated from the water-holding container to prevent deposit formation and algae growth from reaching the gutter. Bacterial growth is... | 09/28/2004 |
| 6797123 | Device at distillers adapted to distill solvents for recovery of pure solvent from impure solvent The present invention relates to a device for a distiller adapted to distil solvents for recovery of pure solvent from impure solvent, the solvent (2) being used for washing away residues of paint from spray guns. The distiller (1) includes an outer co... | 09/28/2004 |
| 6638398 | Methods for the evaporation of an aqueous solution containing ammonia A method including evaporating aqueous solutions containing ammonia, adding an acid to the evaporated vapor flow to form an ammonium salt, and condensing the vapor flow to form a liquid containing the salt. By this method the ammonia formed into a salt is... | 10/28/2003 |
| 6570026 | Method for producing phthalic anhylic anhydride according to specifications On-spec phthalic anhydride is prepared by distillative purification of crude phthalic anhydride by a process in which crude phthalic anhydride is fed to a distillation column which is operated at reduced pressure, the low boilers are removed at the top or... | 05/27/2003 |
| 6554967 | Method of refining dihydroxyaryl compound A refined dihydroxyaryl compound, for example, catechol, having a high degree of purity and a very low metal content is produced by evaporating a starting dihydroxyaryl compound in a distillation column, condensing the vapor fraction in a condenser connec... | 04/29/2003 |
| 6461482 | Process for preparing high-purity phytantriol A process for preparing high-purity phytantriol, that includes rectifying the phytantriol which is obtained and is contaminated with lower and/or higher boiling byproducts under medium vacuum in rectification columns containing metal cloth packings with o... | 10/08/2002 |
| 6440275 | Solar stills for producing fresh water A solar still for producing fresh water including a device, adapted to absorb solar radiation and to contain water to be distilled; a condensation surface on which vapor, produced by heating up of water of the device can condense; a fresh water collector ... | 08/27/2002 |
| 6419796 | Solvent distillation apparatus The object of the invention is to provide a solvent distillation apparatus capable of preparing a highly pure anoxic, dehydrated solvent. A distilling flask is connected to a vacuum double-barrel fractionating column by a glass flange. The upper end of th... | 07/16/2002 |
| 6342127 | Distillation device A distillation device including an enclosed tube of elliptical or circular cross section and having a top of an inverted shape so that the inverted portion points downward. The upper section of the outer tube should be of a material that permits the heati... | 01/29/2002 |
| 6235162 | Ultrapure hydroxylamine compound solutions and process of making same In one embodiment, the present invention relates to a method of treating a solution containing hydroxylamine, involving subjecting the solution containing hydroxylamine to fractional distillation using a packed column thereby providing a first distillate;... | 05/22/2001 |
| 6235161 | Inhibition of 141b decomposition Inhibition of the formation of unsaturated carbon compounds during the heating of 141b involving the addition of various inhibitors such as butylene oxide and/or the use of a vessel made of a nickel alloy.... | 05/22/2001 |
| 6214174 | Purifier and purifying method for polymerizable organic compounds A distillation column is arranged so that a liquid hole which allows liquid containing a polymerizable organic compound to flow from on a tray supporting member downward is formed in a part of the tray supporting member, for example, a support ring, so th... | 04/10/2001 |
| 6214173 | On-site manufacture of ultra-high-purity nitric acid Provided is a novel on-site system and method for providing ultra-high-purity nitric acid to a point of use. The system includes a source of nitric acid at a concentration greater than 68 wt %; a reflux distillation column having an inlet in communication... | 04/10/2001 |
| 6177114 | Refining of edible oil rich in natural carotenes and Vitamin E A process for the production of a natural carotene rich refined and deodorized oil by subjecting the oil to a pressure of less than 0.060 mbar and to a temperature of less than 200° C., wherein the process includes distilling the oil in a short-path dist... | 01/23/2001 |
| 6150040 | Pure steam-related apparatus protected from fouling and method of manufacturing the same A pure steam-related apparatus, which is one of apparatus in the group of pure steam generators generating pure steam from purified water, pipelines for pure steam and sterilizers using pure steam, is protected from discoloration, so-called "fouling", to ... | 11/21/2000 |
| 6099693 | Movable water distiller A movable water distiller capable of use in conjunction with a water heater includes a frame having a top which supports the water heater. The distiller components are supported on a tray having a guide assembly engaging a track assembly horizontally posi... | 08/08/2000 |
| 6066232 | Method and vaporizer for vaporizing oxidation-sensitive compounds The invention relates to a process for evaporating a liquid containing vaporizable oxidation-sensitive compounds in an evaporator in which the liquid is brought into contact with a heated solid surface for evaporation, by a process in which direct contact... | 05/23/2000 |
| 6042618 | Dry cleaning method and solvent The present invention comprises a dry cleaning system and method, in which dry cleaning machinery is used in conjunction with a specific solvent which is derived from an organic/inorganic hybrid (organo silicone). In this class of organo silicones is a gr... | 03/28/2000 |
| 6001222 | Solar heating and evaporation plant A solar heating and evaporation plant is described which can be used to either produce distilled potable water from salty water or to heat water for industrial or domestic purposes. The plant includes a plurality of substantially equally spaced solar stil... | 12/14/1999 |
| 5976324 | Removal of water from reaction mixtures A process as been found for the removal of water from reaction mixtures of acids or acid anhydrides or of aqueous alkali metal hydroxide solutions with alcohols using vapor permeation/pervaporation at the boiling point of the reaction mixture, which inclu... | 11/02/1999 |
| 5932261 | Refining of edible oil rich in natural carotenes and vitamin E The invention discloses a process for the production of a natural carotene rich refined and deodorised oil by subjecting the oil to a pressure of less than 0.060 mbar and to a temperature of less than 200° C. and wherein the process includes the steps of... | 08/03/1999 |
| 5900124 | Method and apparatus of concentrating chemicals for semiconductor device manufacturing A method of concentrating chemicals for semiconductor devices, which includes the steps of heating a sample container by using a high-energy light source, vaporizing the chemicals by injecting a high-temperature gas into the sample container through an in... | 05/04/1999 |
| 5852201 | Process for the distillation of crude ester in the DMT/PTA process A process for preparing crude dimethyl terephthalate, comprises oxidizing a mixture comprising para-xylene and methyl para-toluate, esterifying the oxidized mixture with methanol, separating the resulting crude ester into fractions. By separating the crud... | 12/22/1998 |
| 5770020 | Distillation apparatus The invention relates to a distillation apparatus (1) which is suitable in particular for the distillation of sea water into fresh water. The apparatus includes a plurality of flat, bag-like elements (3) formed from a thin film material such as plastic fi... | 06/23/1998 |
| 5744008 | Hurricane tower water desalination device A simple, portable and efficient water desalination device uses deep ocean water, solar energy and the dynamics of generated secondary vortices. The device includes a tower, a heat exchanger positioned inside the tower near the top of the tower, a cold wa... | 04/28/1998 |
| 5676802 | Apparatus for treating waste water An improved apparatus for treating waste water containing volatile and corrosive substances by steam-stripping to remove the volatile and corrosive substances from the waste water. The apparatus has a liquid pooling zone installed at a part over the waste... | 10/14/1997 |
