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| Number | Title | Issue Date |
| 6224769 | Method and apparatus for treating organic waste water A method and apparatus are disclosed for treating an organic waste water which are capable of utilizing compact equipment by reducing the quantity of a sludge to be treated. Organic waste water (A) is subjected to an aerobic biological treatment in a biol... | 05/01/2001 |
| 6156440 | Material for use in an apparatus contacting organic amines A treated stainless steel is used as the material of construction for parts of an apparatus exposed to an organic amine. The stainless steel is treated by cleaning the stainless steel, forming a colored oxide film on the surface of the cleaned stainless s... | 12/05/2000 |
| 6106717 | Method for treating organic waste water A method of treating an organic waste water, which is capable of separating and recovering phosphorus components in a liquid or solid form, is provided. According to the method of the present invention, reuse of phosphorus components can be facilitated, w... | 08/22/2000 |
| 6083395 | Method of treating a waste water containing organic solids A method of continuously treating an organic waste water which simplifies the overall process, avoids lengthy solubilizing reactions to reduce the volume of a solubilizing vessel, and effectively performs the solubilizing treatment is disclosed. In the me... | 07/04/2000 |
| 6048385 | Electric discharge wire-holding structure for wet-type electric dust collector An electric discharge wire-holding structure for a wet-type electric dust collector is disclosed. The holding structure is capable of increasing the service life of electric discharge wires by preventing the presence of a minute clearance at the end of th... | 04/11/2000 |
| 6033571 | Activated sludge treatment method and apparatus An activated sludge treatment apparatus having an aeration tank 14 for subjecting an organic waste water to an aerobic biological treatment, a first precipitation device 16 for separating a waste water treated in aeration tank 14 into treated water and a ... | 03/07/2000 |
| 5931665 | Furnace for firing a glass-lined product A batch type furnace includes a furnace body, a floor being removably attachable to the furnace body for forming a furnace chamber, and radiant tubes being substantially and uniformly arranged in the furnace body and the floor. The radiant tubes are contr... | 08/03/1999 |
| 5888361 | Apparatus for producing hydrogen and oxygen A simply configured cooling mechanism for an apparatus for producing hydrogen and oxygen is disclosed. The configuration makes it possible to freely select the type of heat exchanger, without any restrictions, in order to improve cooling efficiency. In pa... | 03/30/1999 |
| 5795450 | Apparatus for producing hydrogen and oxygen A simple and efficient apparatus for producing hydrogen and oxygen is disclosed, wherein resistance to the flow of deionized water, oxygen gas, and hydrogen gas does not increase, and the amount of electric energy required for electrolysis can be reduced.... | 08/18/1998 |
| 5783051 | Apparatus for producing hydrogen and oxygen An apparatus for producing hydrogen and oxygen having a pressure vessel surrounding a bipolar-type water electrolytic cell The electrolytic cell contains a plurality of joined solid electrolyte membrane units, and each solid electrolyte membrane unit cont... | 07/21/1998 |
| 5690797 | Hydrogen and oxygen gas generating system A hydrogen/oxygen gas generating system includes a deionized water container and a cell for water electrolysis having anode and cathode compartments, the cell being submerged in deionized water in the container. Oxygen gas generated in the anode compartme... | 11/25/1997 |
| 5382092 | Mixing apparatus and bottom ribbon blade used therein A mixing apparatus includes a bottom ribbon blade adapted for viscous fluid contents. The mixing apparatus includes a vertically positioned mixing vessel including a cylindrical wall and a bottom wall disposed on a lower portion of the cylindrical wall wh... | 01/17/1995 |
| 5279718 | Method of electroosmotically dehydrating sludge This disclosure relates to a process and apparatus for electroosmotic dehydration of sludge with aluminum salt added to the sludge to reduce the clogging of the filter cloths of the dehydrator, and to improve the cake release. The aluminum salt is prefera... | 01/18/1994 |
