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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7378005 | Electrode for electrolysis and method of manufacturing electrode for electrolysis An object is to provide an electrode for electrolysis which is preferable in generation of ozone water usable in cleaning and sterilizing of water and sewage, or cleaning in a semiconductor device manufacturing process by an electrolysis process, and a method of man... | 05/27/2008 |
| 7374656 | Combined electrochemical system for scale treatment and eradicating bacteria in water supply systems A combined electrochemical system for scale treatment and eradicating bacteria in water supply systems having: (a) a first electro-chemical cell including: (i) a first metallic tank for receiving a water supply and forming a cathode of the first electro-chemical cel... | 05/20/2008 |
| 7241373 | Nitrogen treating method There is provided a nitrogen treating method capable of treating nitrogen compounds efficiently. The method is a nitrogen treating method of treating nitrogen compounds in for-treatment water by electrolysis and performs a first treating step of producing ammonia fr... | 07/10/2007 |
| 7192556 | Flow cell, method for separating carrier-free radionuclides, and the radiochemical reaction thereof The invention relates to a flow cell, a method for separating carrier-free radionuclides from a liquid or liquefiable target material, and the radiochemical reaction thereof. According to prior art, flow cells are known which require reaction volumes corresponding t... | 03/20/2007 |
| 7156962 | Electrolyzing electrode and production method therefor and electrolysis method using electrolyzing electrode and electrolysis solution producing device There are provided an electrode for electrolysis which takes into consideration safety to human bodies and environmental pollution upon disposal of the electrode, produces ozone with high efficiency and has excellent durability, a production process of the electrode... | 01/02/2007 |
| 6821403 | Method and device for cleaning and disinfecting treatment of water Method for cleaning and disinfecting treatment of water, during which the water is exposed to at least one electric field, whereby the electric field is a low-current field with pulsating direct voltage. Device for realization of the method which includes a source o... | 11/23/2004 |
| 6802956 | Electrolytic treatment of aqueous media A variety of pollutants and other contaminants may be removed from a variety of aqueous media using electrolytic treatments. The treatment includes inserting an anode and a cathode into the medium undergoing treatment, and applying a high current and voltage to the ... | 10/12/2004 |
| 6709567 | REDOX water treatment system An apparatus for treating a flow of water containing contaminants includes first and second permeable electrodes and a power supply is coupled to each of the first and second permeable electrodes to create an electrical potential therebetween. The first and second p... | 03/23/2004 |
| 6673229 | Electrochemical apparatus and process for purification of fluids The invention relates to an apparatus for purifying fluids comprising at least one electrochemical cell having a cathode (3), an anode (5) and an electrolyte (7), said cathode (3) comprising a metal complex, ML, where M represents a metal and L represents... | 01/06/2004 |
| 6531050 | Water purification process A process for removing nitrate ions from an aqueous solution thereof which comprises passing the solution through an electrochemical cell comprising at least one anode and at least one cathode and passing a current therebetween, wherein the cathode surfac... | 03/11/2003 |
| 6383362 | Process and apparatus for eliminating dioxins Dioxins are eliminated from soot by conversion into oil and water. A gas stream of smoke and dioxin-entraining ash is passed through a curtain of water in a separator to separate the dioxin-entraining ash from the gas stream. The ash-water mixture is sepa... | 05/07/2002 |
| 6342150 | Redox water treatment system An apparatus for treating a flow of water containing contaminants includes first and second permeable electrodes and a power supply is coupled to each of the first and second permeable electrodes to create an electrical potential therebetween. The first a... | 01/29/2002 |
| 6270650 | Electrolytic cell with porous surface active anode for removal of organic contaminants from water and its use to purify contaminated water A wet oxidation/reduction electrolytic cell, system, and method for the remediation of contaminated water is disclosed. A porous electrode of large surface area produces powerful oxidizing agents in situ without having to add any reagents, oxidizers, or c... | 08/07/2001 |
| 6238546 | Electrochemical treatment of effluent water An apparatus (200) for the treatment of effluent including a chamber (210) having an inlet (212) and an outlet (252), a plurality of plate-type electrodes (211) extending vertically in the chamber (210), and an electrical supply connected to the plurality... | 05/29/2001 |
| 6210558 | Steel pickling process in which the oxidation of the ferrous ion formed is carried out electrolytically Stainless steel pickling process in which a pickling solution containing HF and Fe3+ ions as essential components is used, and wherein the oxidation to Fe3+ of the Fe2+ formed during the process in order to maintain the Fe... | 04/03/2001 |
| 6190531 | Concentration and removal of tritium and/or deuterium from water contaminated with tritium and/or deuterium Concentration of tritium and/or deuterium that is a contaminant in H2 O, followed by separation of the concentrate from the H2 O. Employed are certain metal oxo complexes, preferably with a metal from Group VIII. For instance, [Ru | 02/20/2001 |
| 6126811 | Electrocatalytic method for the deoxygenation of sea water and device for its implementation The invention concerns a method consisting: in passing the sea water through an electrically conductive catalyst (10), arranged in the cathode section of an electrolytic cell (1), comprising a cathode section (3) and an anode section (4) provided with, th... | 10/03/2000 |
| 6096179 | Carbon-reinforced electrode and method of making same A carbon-reinforced electrode is disclosed. The electrode is formed from a high surface area absorptive material ("HSAAM electrode") made from resorcinol, formaldehyde, a carbon reinforcing agent, a catalyst, and reaction products thereof, and is in a car... | 08/01/2000 |
| 6090259 | Liquid deionization apparatus having independently powered carbon-reinforced electrode structures An apparatus for deionization of a liquid is disclosed. The apparatus has a number of deionization cells, each cell having two different types of electrodes. The first type of electrode is formed from a high surface area absorptive material ("HSAAM electr... | 07/18/2000 |
| 6045704 | Water purification system and method having a chlorine generating function in addition to a bacteriostatic function In a water purification system for purifying raw water with a first d.c. voltage is applied between a conductive adsorber portion (20) and a primary electrode (27) in the raw water, a second d.c. voltage higher than the first d.c. voltage is applied in pl... | 04/04/2000 |
| 6017461 | Water purification systems An ion supply unit for a water system which is to have its contents purified includes a tank fed from a main water supply and an electrolytic ion generator including silver alloy electrodes. A pump circulates water from the tank through the ion generator ... | 01/25/2000 |
| 6007696 | Apparatus and method for manufacturing electrolytic ionic water and washing method using electroyltic ionic water Disclosed is an apparatus for manufacturing an electrolytic ionic water for treating a substrate, comprising an electrolytic cell including an anodic chamber and a cathodic chamber partitioned from the anodic chamber by a porous membrane, a first carbon e... | 12/28/1999 |
| 6001238 | Method for purifying pure water and an apparatus for the same A method of reducing the concentration of metal ions in pure water or ultrapure water and thereby obtaining pure water or ultrapure water. Such purified pure water or purified ultrapure water is used, for example, when washing semiconductor wafers, as a s... | 12/14/1999 |
| 5954937 | Method and apparatus for capacitive deionization and electrochemical purification and regeneration of electrodes An electrically regeneratable electrochemical cell (30) for capacitive deionization and electrochemical purification and regeneration of electrodes includes two end plates (31, 32), one at each end of the cell (30). Two end electrodes (35, 36) are arrange... | 09/21/1999 |
| 5925230 | Deionization apparatus having non-sacrificial electrodes of different types An apparatus for deionization of a liquid is disclosed. The apparatus has a number of deionization cells, each cell having two different types of electrodes. The first type of electrode is formed from a high surface area absorptive material ("HSAAM electr... | 07/20/1999 |
| 5894696 | Method of and apparatus for supplying a solution for raising of terrestrial plants A method of efficiently supplying terrestrial plants with raising substances such as a solution comprises the steps of: producing a solution by an electrolysis of a water using a carbonaceous electrode; reducing the produced solution to minute particles o... | 04/20/1999 |
| 5792336 | Method for purification of wastewater from soluble substances A two stages electrocatalytic method for oxidative-purification of wastewater from soluble substances, such as toxic chemical admixtures difficult of oxidation, including dye-stuffs, detergents, phenols, cyanides and the like, which stages inactivate the ... | 08/11/1998 |
| 5770030 | Process for the separation of carrier-free radio-nuclides from target liquids, the use of the process and an arrangement suitable therefor Ionizable or polarizable, carrier-free radionuclides may be separated by electrofixation, from a low electric conductivity liquid target material in a flow cell fitted with a permanent electrode arrangement. The target liquid is separated while the fixing... | 06/23/1998 |
| 5753099 | Metal recovery In the recovery of an electrically conductive metal from a liquid containing the metal in solution, a cathode member for deposition of the metal by electrolysis, comprises a carrier sheet with a cathode element of the metal to be recovered, on one side of... | 05/19/1998 |
| 5744028 | Water treating apparatus A water dispenser including a water tank for storing water supplied from a water bottle; an electrolytic cell including an anode, a cathode, and a three-dimensional carbon electrode provided between the anode and the cathode, the electrolytic cell being p... | 04/28/1998 |
| 5725751 | Process for the electro-oxidation of photographic solutions The invention concerns a process and a device for the treatment by electrolysis of used photographic solutions containing developers in an electrolytic cell comprising at least one platinum anode. The invention enables the corrosion of the platinum anode ... | 03/10/1998 |
| 5702587 | Chemical and electrochemical regeneration of active carbon Method for the regeneration of active carbon having oxidizable, organic pollutants adsorbed thereon by electrochemical and chemical means and apparatus therefor. The method involves a desorption step prior to a decomposition step. Each step involves condu... | 12/30/1997 |
| 5688393 | Method for the electro-oxidation of photographic solutions The invention concerns a method for the treatment by electrolysis of used photographic solutions, in particular those containing developers for X-ray films, in an electrolysis cell comprising at least one platinum anode and at least one cathode. According... | 11/18/1997 |
| 5685994 | Method for water treatment and purification using gas ion plasma source and disinfectant metal ion complexes A system for disinfecting water streams comprises a source of ionized plasma, that is, a stream of air including ionized oxygen and nitrogen gas atoms and molecules, ozone, and singlet molecular oxygen, and an additional source of metal ions. The gas plas... | 11/11/1997 |
| 5662789 | Removal of organics from aqueous solutions A process is described for electrochemically "collecting" certain organic compounds from aqueous solutions in an immobilized and concentrated manner conducive to subsequent destruction. The method is applicable for organic compounds amenable to electroche... | 09/02/1997 |
| 5658450 | Method of and device for industrial waste water treatment Waste water is purified by passing through a vessel in which small particles of insoluble cathodes interact with anodes to form galvanic couples. During this process, chemical reduction of ions of heavy metals in the water occurs by ions and hydroxides fo... | 08/19/1997 |
| 5647969 | Method and system for removing ionic species from water A process and system (100) for purifying water includes a pair of electrodes (52) with a gap (58) between the electrodes (52). The electrodes (52) are connected to a power supply (116) that places a voltage across the two electrodes (52). Raw water (51) i... | 07/15/1997 |
| 5635059 | Method and apparatus for water treatment and purification using gas ion plasma source and disinfectant metal ion complexes A system for disinfecting water streams comprises a source of ionized plasma, that is, a stream of air including ionized oxygen and nitrogen gas molecules, including ozone, and an additional source of metal ions. The gas plasma is introduced into the wate... | 06/03/1997 |
| 5614078 | Method and apparatus for removing nitrates from water An apparatus for reducing nitrates in an aqueous solution includes an electrochemical cell having a container for containing the aqueous solution containing nitrates, a carbon fiber cathodic electrode, a carbon fiber anodic electrode, and a reference elec... | 03/25/1997 |
| 5599437 | Electrolysis of electroactive species using pulsed current A waste solution containing electroactive species, e.g., metal ions, can be remediated to very low levels of contaminant by an electrolysis method including the steps of introducing an electrolyte containing an electroactive species into an electrolytic c... | 02/04/1997 |
