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| Number | Title | Issue Date |
| 6959718 | Valve There is provided a valve enabling complete prevention of leakage and a backflow and having durability and less noise, and further there may be implemented a valve capable of predicting the tendency of occurrence of damage on the functions of the valve before the fu... | 11/01/2005 |
| 6875009 | Combustion method and apparatus for NOx reduction Combustion method and apparatus for NOx reduction and CO reduction which are capable of easily achieving super NOx reduction with the value of exhaust NOx under 10 ppm. The combustion method for NOx reduction by controllin... | 04/05/2005 |
| 6823821 | Combustion method and apparatus for NOx reduction Combustion method and apparatus for NOx reduction are capable of easily achieving NOx reduction to an exhaust NOx value of 30 ppm or under. The combustion method is to perform in combination a first NOx reduction step for ... | 11/30/2004 |
| 6792895 | Combustion method and apparatus for NOx reduction Combustion method and apparatus for NOx reduction which are capable of achieving NOx reduction with the value of exhaust NOx under 10 ppm, as well as CO reduction at the same time. The combustion method for fulfilling NOx ... | 09/21/2004 |
| 6793485 | Combustion apparatus for NOx reduction A combustion apparatus for NOx reduction and CO reduction capable of achieving stable NOx reduction with simple means. The combustion apparatus for fulfilling NOx reduction by controlling the temperature of combustion gas derived fro... | 09/21/2004 |
| 6764019 | Method for servicing and maintaining heat supply equipment In a method for servicing and maintaining heat supply equipment, which includes making a servicing and maintenance contract to implement equipment performance maintenance, function maintenance, abnormality recovery and a diagnosis for preventive maintenance of the h... | 07/20/2004 |
| 6626366 | System for servicing and maintaining heat supply equipment There is provided a system for servicing and maintaining heat supply equipment which ensures reliable analysis and high efficiency. Heat supply equipment 1 is composed of a control unit 5 to be attached to the heat supply equipment 1, and an equipment-sid... | 09/30/2003 |
| 6470837 | Method for servicing and maintaining heat supply equipment In heat supply equipment provided with a plurality of maintenance object units, secure and prompt servicing and maintenance is implemented and a burden on a person in charge of managing the heat supply equipment is decreased. In a method for servicing and... | 10/29/2002 |
| 6269782 | Water-tube boiler Boiler efficiency is further improved and the whole boiler body is slimmed down by totally improving heat transfer surfaces confronting gas flow passages, i.e., by forming the heat transfer surface structure into three stages, and moreover by making effec... | 08/07/2001 |
| 6029614 | Water-tube boiler with re-circulation means The water-tube boiler fulfills the reduction in NOx with a simple constitution, and achieves reduction in NOx and reduction in CO at the same time with a simple constitution. In the water-tube boiler, a plurality of water tubes (5) a... | 02/29/2000 |
| 5938414 | Liquid feeding apparatus having a cassette accommodating an elastic tube A liquid feeding apparatus quantitatively feeds a liquid by pressing and clogging an elastic tube between a press roller and an arc-shaped guide portion through rotational motion of the press roller. The liquid feeding apparatus includes a main unit in wh... | 08/17/1999 |
| 5655710 | Method for controlling operated-units count of fluid heating units In a multi-unit installation system of fluid heating units such as hot water boilers, an outstandingly superior responsivity to load variations is obtained, and fluid of stable temperature is supplied by preventing useless starts and stops. In a units cou... | 08/12/1997 |
| 5353748 | Combustion method and apparatus for reducing emission concentrations of NOx and CO A combustion flame is distributed so as to cross a group of heat absorbing tubes arranged parallel to and spaced from one another, thereby cooling the combustion flame. A specific temperature zone of approximately 1000° C.-1300° C. for suppressing gener... | 10/11/1994 |
| 5199384 | Quadrangular type multi-tube once-through boiler A quadrangular type multi-tube once-through boiler having an arrangement in which a feed path combuation air, combuation chamber, and an exhaust gas channel passing through a flue are aligned in substantially the same plane, and provided with a burner duc... | 04/06/1993 |
| 4825813 | Multi-pipe once-through type boiler A multi-pipe once-through boiler having at least one row of a plurality of circumferentially arranged pipes on which a plurality of fins are arranged in such a manner that the fins are in contact with the flow of the combustion gas in a substantially para... | 05/02/1989 |
