Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7090717 | Air purifier An air purifier has a simply manufactured and assembled ionizer, which improves the charging efficiency for dust particles using multi-directional discharge and prevents electrical accidents. The air purifier includes an ionizer and a collector. The ionizer includes... | 08/15/2006 |
| 7048780 | Air purifier An air purifier has a simply manufactured and assembled ionizer, which increases the charging efficiency for dust particles through maximally increased discharge spaces and prevents electrical accidents. The air purifier includes an ionizer and a collector. The ioni... | 05/23/2006 |
| 6875362 | Waste water treating method, waste water treating apparatus, and waste water treating system There are proposed a waste water treating method, a waste water treating appratus and a waste water treating system which are capable of treating a nitrogen compound and a phosphorus compound in the same treating vessel and treating waste water containing a nitrogen... | 04/05/2005 |
| 6818104 | Anodizing apparatus In a process for producing a semiconductor member, and a solar cell, making use of a thin-film crystal semiconductor layer, the process includes the steps of: (1) anodizing the surface of a first substrate to form a porous layer at least on one side of the substrate... | 11/16/2004 |
| 6712947 | Water purifying apparatus with electric field generator A purifying apparatus for purifying flowing water includes a negative electrode plate disposed on a flowing water bed and a positive electrode plate disposed at an upper face opposite to the negative electrode plate, wherein the positive electrode plate is adapted t... | 03/30/2004 |
| 6077416 | Method for purification of waste water using an electric coagulator The invention relates to purification of waste waters and may be used for water purification from heavy non-ferrous metals, chrome and organic impurities, as well as for separation of impurities from solution. The method is performed by electric coagulati... | 06/20/2000 |
| 5814221 | Solution treatment device A device for the treatment of selected solutions wherein the device is a sealed container including a chemical mixture therein, at least one of the ingredients being magnetite.... | 09/29/1998 |
| 5648168 | Duplex coating for corona electrodes A corona electrode, such as a roller electrode, having an outer dielectric layer and an undercoat of a copper layer that permits the electrode to operate at a lower temperature for a specific power input over a similar electrode without the copper underco... | 07/15/1997 |
| 5437775 | Method for preparing high-purity propylene carbonate and for simultaneously making passivated electrodes This invention relates to a method for preparing high-purity propylene carbonate and for simultaneously making passivated electrodes, wherein optionally prepurified propylene carbonate is exposed in a cell to an electric field between bare electrodes.... | 08/01/1995 |
| 5068018 | Electrophoretic fluid composite structure An apparatus and method for control of stiffness and damping in a flexible composite structure by the application of an electric field to an electrophoretic fluid forming part of the structure. The structure includes spaced, parallel, flexible layers of m... | 11/26/1991 |
| 5059296 | Portable self-contained solar powered water purifier A portable self-contained solar powered water purifier for swimming pools, spas, and other bodies of water is disclosed. The purifier includes a buoyant housing for supporting a solar cell array above the surface of water to be treated and a purification ... | 10/22/1991 |
| 4988427 | Liquid/solid separation unit The flow of alternating current electrical power between electrode(s) and ground electrode(s) in contact with a working fluid is utilized in separating materials within the working fluid and to agitate the working fluid and separate contaminants within th... | 01/29/1991 |
| 4917785 | Liquid processing system involving high-energy discharge A method and apparatus are disclosed for efficient endothermic processing of liquids and the precipitation of dissolved elements and chemical compounds. Improvements over prior systems include system layout, components and modes of operation of the system... | 04/17/1990 |
| 4319979 | Apparatus for extracting polar substances from solution The extraction of polar substances, such as pure water, from a solution containing such substances is carried out in an electrical process that closely resembles natural evaporation. By exposing the solution to a closely spaced, electrically charged surfa... | 03/16/1982 |
| 4266088 | Method of making electret means A method of storing solar energy in the immediate vicinity of available solar energy comprising the steps of generating electrical current with the available solar energy and charging a strip of electret producing material directly with the electrical cur... | 05/05/1981 |
| 4060449 | Electrostatic method and apparatus for making a patterned, non-woven sheet A method and apparatus for making a patterned non-woven sheet by providing a slurry of fluid and fibers and forming the slurry into a sheet-like form. An electrostatic field action is provided that acts on the sheet-like form and causes the fibers to be a... | 11/29/1977 |
