# Yasuharu Ooishi, Tokyo JP

## Yasuharu Ooishi, Tokyo JP

Patent application number | Description | Published |
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20090007654 | FLOW SENSOR - The flow meter is equipped with first and second flow paths, provided in parallel and through which flows fluid having flowed through and being diverted from a main flow path, the flow diversion ratio among the first and second flow paths changing passively in accordance with the flow rate of fluid through the main flow path, and a flow rate sensor provided on at least one of the first and second flow paths. The first and second flow paths are formed, for example, as flow paths having different flow path cross-sectional areas, or alternatively are formed from mesh elements provided with mesh-free areas on a portion thereof. Alternatively, one of the either the first or second flow path is realized with a paddle mechanism incorporated therein. | 01-08-2009 |

20090188303 | GAS METER - A gas meter with a simple structure for detecting a range from a minute flow rate, such as a gas leak, to the large flow rate of the normal state of use of the gas, while protecting the flow rate sensor from dust and without producing the problem of pressure loss. First, second, and third flow paths for carrying partial flows of a gas to be measured, in accordance with the flow rate, are provided by partitioning, in parallel, the cross-sectional surface of a main flow path. A flow rate sensor for flow rate measurement is provided in the first flow path with a small flow path cross-sectional area, and a flow rate sensor for detecting a gas leak is provided in the second flow path with a small flow path cross-sectional area, where a flow baffling filter is provided on one end side or both ends of the first and second flow paths, and a contaminant (dust) removing filter is provided on one end side or both ends of the first flow path. | 07-30-2009 |

20090277246 | THERMAL CONDUCTIVITY MEASURING METHOD AND APPARATUS, AND GAS COMPONENT RATIO MEASURING APPARATUS - A heat radiation coefficient C [=Ph/(Th−To)] from a microheater is calculated in accordance with a power Ph applied to the microheater which is supported in air and provided in an ambient gas, a heater temperature Th, and an ambient temperature To at this moment. Further, a thermal conductivity λ | 11-12-2009 |

20110185789 | CALORIFIC VALUE CALCULATION FORMULA GENERATING SYSTEM, CALORIFIC VALUE CALCULATION FORMULA GENERATING METHOD, CALORIFIC VALUE CALCULATING SYSTEM, AND CALORIFIC VALUE CALCULATING METHOD - A calorific value calculation formula generating system is equipped with a measuring mechanism for measuring heat dissipation constant values or thermal conductivity values of each of plural mixed gases each containing plural kinds of gas components at plural temperatures; and a formula generation module for generating a calorific value calculation formula having heat dissipation constant or thermal conductivities at the plural temperatures as independent variables and a calorific value as a dependent variable on the basis of calorific value values of the plural mixed gases and the heat dissipation constant values or the thermal conductivity values measured at the plural temperatures. | 08-04-2011 |

20110257898 | THERMAL DIFFUSIVITY MEASURING SYSTEM, CONCENTRATION OF CALORIC COMPONENT MEASURING SYSTEM, AND FLOW RATE MEASURING SYSTEM - A thermal diffusivity measuring system including a measuring mechanism for measuring a radiation coefficient or a value for thermal conductivity for a mixed gas measured when the heater element has produced heat at a plurality of temperatures; a thermal diffusivity calculating equation storing device storing a thermal diffusivity calculating equation using the radiation coefficients or the thermal conductivities for a plurality of heat producing temperatures as independent variables and uses the thermal diffusivity as the dependent variable; and a thermal diffusivity calculating portion calculating a value for the thermal diffusivity of the mixed gas being measured through substituting the values of the radiation coefficients or the thermal conductivities of the mixed gas being measured, for the plurality of heat producing temperatures, for the independent variables of the radiation coefficients or thermal conductivities, for the plurality of heat producing temperatures, in the thermal diffusivity calculating equation. | 10-20-2011 |

20120240662 | DENSITY MEASURING SYSTEM AND DENSITY MEASURING METHOD - A density measuring system, including a container into which a gas is injected, provided with a heating element to which a variety of different voltages is applied; an equation storage device storing a density calculating equation that has, as independent variables, electrical signals obtained from the heating element when each of the plurality of different voltages is applied and has the density as a dependent variable; and a density calculating portion calculating a measured value for the density of the gas that is injected into the container, through substituting measured values for the electrical signals from the heating element into the independent variables of the density calculating equation. | 09-27-2012 |

20120287962 | CALORIFIC VALUE MEASURING SYSTEM AND CALORIFIC VALUE MEASURING METHOD - A calorific value measuring system, includes a gas flowing in a pipe; the flow rate controlling device; a temperature measuring element in the pipe; a heater element, in the pipe, producing a plurality of temperatures; a measuring portion measuring a value from a temperature measuring element that is dependent on the temperature of the gas, and a value from the heater element at each of a plurality of temperatures; an equation storage device storing a calorific value equation using values from the temperature measuring element and values from the heater element at the plurality of temperatures as independent variables and uses the calorific value as the dependent variable; and a calorific value portion calculating a value for the calorific value of a gas through substituting a value from the temperature measuring element and a value from the heater element into the independent variables of the calorific value equation. | 11-15-2012 |

20130065146 | ELECTRIC POWER GENERATION SYSTEM AND GAS MEASURING SYSTEM - A gas measuring system includes a measuring element being in contact with a gas and a heating element producing heat, a measuring unit measuring a value for an electric signal from the temperature measuring element and a value for an electric signal from the heating element. The system also includes an equation storage device storing an equation including independent variables that represent electric signals from the temperature measuring element and the heating element, and a dependent variable that represents the sum of the products of the respective numbers of atoms forming the molecules in the gas, the atomic weights, and the volumetric ratios of the respective molecules. The system further includes a calculator calculating a value that represents the sum of the products of the respective numbers of the atoms, the atomic weights, and the volumetric ratios of the respective molecules. | 03-14-2013 |

20130259084 | CALORIFIC VALUE MEASURING SYSTEM AND CALORIFIC VALUE MEASURING METHOD - A calorific value measuring system having a container filled with a mixed gas to be measured; a microchip includes a heating element producing heat at a plurality of heat producing temperatures, disposed within the container; a measuring portion measuring a value of an electric signal from the heating element contacting the mixed gas being measured, at each of the plurality of heat producing temperatures; an equation storage device storing a calorific value calculating equation that has, for independent variables, the electric signals from the heating element at the plurality of heat producing temperatures and, as the dependent variable, the calorific value; and a calorific value calculating portion calculating the value of the calorific value of the mixed gas being measured by substituting the measured values for the electric signal from the heating element into the independent variables in the calorific value calculating equation. | 10-03-2013 |