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| Number | Title | Issue Date |
| 8104325 | Device for collecting gases in molten metal and measurement method A device is provided for collection of gases in molten metals, the device having an immersion end with a gas collection body, a gas supply line opening at the immersion end, and a gas discharge line for gases penetrating the gas collection body. The gas collection b... | 01/31/2012 |
| 8042378 | Gas amount measurement device A gas amount measuring device including a vacuum container, a first pipe, an air release valve being attached to the first pipe, a second pipe, a calibration gas generator being attached to the first pipe, a third pipe, a vacuum gauge, a first valve, a leak valve, a... | 10/25/2011 |
| 8011223 | Remaining hydrogen sensor In the hydrogen remaining sensor of the present invention, the hydrogen remaining sensor is arranged in a space in which the hydrogen is absorbed/released by the main hydrogen storage alloy, and is equipped with the vessel-like sensor main body in which the sensor h... | 09/06/2011 |
| 7685863 | Device for measuring the gas content in a molten metal A device is provided for measuring the gas content in a molten metal, the device including an immersion end having a gas-collecting body, a gas supply line opening on the immersion end, and a gas discharge line for the gases passing through the gas-collecting body. ... | 03/30/2010 |
| 7329546 | Method for determining ratio of oxygen isotopes in oxygen-containing solids by heating in graphite crucible Oxygen isotropes are labeled from oxygen containing solids by heating the solids in a graphite crucible by induction to produce Co and/or Co2. ... | 02/12/2008 |
| 7306951 | Method and apparatus for determining diffusible hydrogen concentrations A measuring apparatus and method for use in measuring diffusible hydrogen concentrations in materials, structures, and other objects. In an embodiment of the invention for use in welding applications, the measuring apparatus (10) includes a sensor assembly ( | 12/11/2007 |
| 7302827 | Method and apparatus for measuring gas concentration levels in liquids A method and apparatus for measuring the concentration of gas, such as hydrogen, in a liquid, such as molten aluminum, without requiring a bias or adjustment to compensate for variations in ambient conditions, such as humidity. A measurement system includes a probe ... | 12/04/2007 |
| 7254983 | Fuel gauge for hydrogen storage media A hydrogen gas storage container has a canister with at least one outlet opening for charging and discharging gas, the canister enclosing a metal hydride capable of absorbing and desorbing hydrogen gas and a gauge for measuring the capacity of hydrogen remaining wit... | 08/14/2007 |
| 7237428 | Fuel gauge for hydrogen storage media A hydrogen gas storage container has a canister with at least one outlet opening for charging and discharging gas, the canister enclosing a metal hydride capable of absorbing and desorbing hydrogen gas and a gauge for measuring the capacity of hydrogen remaining wit... | 07/03/2007 |
| 7187178 | Method for determining the voltage sensitivity of the distance between the mirrors of a fabry-perot interferometer A method for determining the voltage sensitivity of the distance between the mirrors of a Fabry-Perot interferometer in a measuring device, which is intended to measure a predefined gas (CO2), of which at least one absorption maximum or minimum is known. At least tw... | 03/06/2007 |
| 7181057 | Overlay marks, methods of overlay mark design and methods of overlay measurements An overlay mark for determining the relative position between two or more successive layers of a substrate or between two or more separately generated patterns on a single layer of a substrate is disclosed. The overlay mark includes a plurality of working zones, whi... | 02/20/2007 |
| 7177457 | Overlay marks, methods of overlay mark design and methods of overlay measurements An overlay mark for determining the relative shift between two or more successive layers of a substrate via scanning is disclosed. The overlay mark includes at least one test pattern for determining the relative shift between a first and a second layer of the substr... | 02/13/2007 |
| 7086274 | Method and apparatus for measuring gas concentration levels in liquids A method and apparatus for measuring the concentration of gas, such as hydrogen, in a liquid, such as molten aluminum, without requiring a bias or adjustment to compensate for variations in ambient conditions, such as humidity. A measurement system includes a probe ... | 08/08/2006 |
| 7068833 | Overlay marks, methods of overlay mark design and methods of overlay measurements An overlay mark for determining the relative shift between two or more successive layers of a substrate is disclosed. The overlay mark includes at least one test pattern for determining the relative shift between a first and a second layer of the substrate in a firs... | 06/27/2006 |
| 6945119 | Apparatus and methods for heat loss pressure measurement A heat loss gauge for measuring gas pressure in an environment includes a resistive sensing element and a resistive compensating element. The resistive compensating element is in circuit with the sensing element and is exposed to a substantially matching environment... | 09/20/2005 |
| 6913731 | Oxygen probe Intended for application on ducts through which flow a fluid at a high temperature, and particularly at a high pressure, comprising two bodies (4) and (8) which axially screw onto each other, one body (4) provided with a threaded neck (5)... | 07/05/2005 |
| 6627155 | Combustion furnace system for analyzing elements in a sample The present invention discloses a system for analyzing elements contained in a sample in very slight amounts, such as C, S, O, N, H and the like in materials, such as steel and ceramics. An element analyzer can gasify the sample elements in an appropriate... | 09/30/2003 |
| 6523416 | Method for setting shape and working stress, and working environment of steel member A delayed fracture is effectively prevented by appropriately setting a shape and working stress, and working environment of a high strength member having more than 1,000 MPa of tensile strength. For this end, the relationship between a maximum value of di... | 02/25/2003 |
| 6216526 | Gas sampler for molten metal and method An immersion probe for determination of the concentration of a gas dissolved in molten metal includes a gas and molten metal-permeable, disk. A gas analysis method using the probe entails introducing into said metal through the probe inert gas streams whi... | 04/17/2001 |
| 6209384 | Solenoid operated molten metal probe Apparatus for determining gas content in a liquid metal. The apparatus includes a hollow tubular probe having one end for disposal in the liquid metal, and the other end connected to a housing containing a gas sensing element. A hollow piston is located i... | 04/03/2001 |
| 6143571 | Method for analytically determining oxygen for each form of oxide The method for analyzing a metal for oxygen, using inert gas carrying fusion/infrared absorption analysis, having the steps of: placing a metal analyte in a graphite crucible; heat-melting the metal analyte; extracting a gas from the melt bath; and analyz... | 11/07/2000 |
| 6116079 | Liquid copper hydrogen sample probe A method is disclosed for improving the making of metals such as steel and copper by using a molten metal gas measurement system to measure the gas content of the molten metal particularly H2 content, and to controlling the metal making process... | 09/12/2000 |
| 5894082 | Apparatus for measuring oxygen within molten substance An apparatus for measuring oxygen within a molten substance comprises a compact oxygen probe unit constructed by assembling a tubular shell whose one end is closed, which is made of solid electrolyte and which is to be soaked into the molten substance to ... | 04/13/1999 |
| 5850034 | Making of metal products using a gas analyzer A method for improving the making of metals such as steel and copper by specially using a gas measurement system to analyze molten metals for gas, particularly H2 content, and to controlling the metal making process based on these values. The preferred ga... | 12/15/1998 |
| 5596134 | Continuous oxygen content monitor A continuous oxygen content monitor has a reference electrode embedded in a powdered chrome-chrome-oxide mixture and a counter electrode embedded in an elongate alumina-graphite sleeve which acts as the probe support body. Two hallow and spacer ablative s... | 01/21/1997 |
| 5591894 | Hydrogen sampler for molten metal and method An immersion probe for determination of the concentration of a gas dissolved in molten metal includes a probe body in the form of an elongated hermetically sealed housing. The body has a first end adapted to be connected to a gas inlet and a gas outlet, w... | 01/07/1997 |
| 5518931 | Process for determining the concentration of a gas in a molten metal A process is provided for determining the concentration of a gas in a molten metal by a carrier gas, which can be pumped to at least one analyzer, either in direct route for calibration, or for measuring through a measuring circuit with a measuring probe ... | 05/21/1996 |
| 5495746 | Gas analyzer for molten metals Disclosed is a probe for determining the gas content of molten metal. The probe comprises a porous filter head permeable to gas and impermeable to the molten metal and a small diameter tube having an upper portion and a lower portion, the tube attached to... | 03/05/1996 |
| 5431066 | Device for preparing samples of powdered metals for analysis A device for the preparation of powdered metal samples for oxygen analysis includes a mold with a central cavity accessible through a tapered throat region on the top of the mold. A tin foil sheet is placed in the tapered throat region and pressed into th... | 07/11/1995 |
| 5345808 | Gas analyzer for molten metals Disclosed is a probe for determining the gas content of molten metal. The probe comprises a porous filter head permeable to gas and impermeable to the molten metal and a hollow cast iron tube or sleeve having an upper portion and a lower portion, the slee... | 09/13/1994 |
| 5288645 | Hydrogen evolution analyzer Method for determining temperature ranges at which a selected gas evolves from a specimen of a selected material, bulk or surface of a metal, semiconductor, or insulator, and the probable source of that gas in each such temperature range. A specimen is pl... | 02/22/1994 |
| 5226950 | Liquid-in-liquid sensor and method The present invention includes process and apparatus for continuously monitoring or detecting a liquid element or compound in another, different liquid including introducing a gas into a first liquid, measuring bubble size of bubble formation of the gas i... | 07/13/1993 |
| 5081869 | Method and apparatus for the measurement of the thermal conductivity of gases New methods and apparatus for the measurement of thermal conductivity of gases employ a single katharometer element comprising a thermistor. In one circuit the thermistor is part of a first potential divider whose output voltage is compared to that of a s... | 01/21/1992 |
| 5031444 | Method and apparatus for the determination of gas concentration in molten metal and metal matrix composites The invention provides a new method for the determination of the concentration of gas dissolved in a molten metal or metal matrix composite employing a new immersion head probe in apparatus employing the method. Such determinations are needed to facilitat... | 07/16/1991 |
| 4998432 | Apparatus and method for measuring a gas content of liquid metal and probe used therein A probe for immersion in a bath of liquid metal includes a gas supply pipe closed at its lower end by a stopper which melts in liquid metal, a gas collecting portion having a diaphragm which allows gas to pass but retains liquid metal for collecting the g... | 03/12/1991 |
| 4918974 | Method and apparatus for the measurement of the thermal conductivity of gases A new method and apparatus for the measurement of thermal conductivity of gases employs a single katharometer element, which preferably is a thermistor, but may be a heated filament. In a preferred circuit the element is part of a first potential divider ... | 04/24/1990 |
| 4907440 | Probe for the determination of gas concentration in molten metal The invention provides a new immersion head probe for use in apparatus for the determination of the concentration of gas dissolved in a molten metal. Such determinations are needed to facilitate removal of the gas, which can cause bubbles in the solidifie... | 03/13/1990 |
| 4878375 | Device for measuring hydrogen concentration in an aluminum melt The device comprises an immersion probe (10) which is permeable to hydrogen and is made of melt-resistant sintered or calcined ceramic material connected, in a vacuum tight manner via a capillary tube (4), to a pressure gauge (2). The immersion probe (10)... | 11/07/1989 |
| 4829810 | Filament drive circuit An apparatus and a method is provided for determining the equilibrium of the partial pressures of two gases having different thermal conductivities. The apparatus includes a single sensor adapter to be contacted by the two gases, and heated by a flow of e... | 05/16/1989 |
| 4800747 | Method of measuring oxygen in silicon A heat melting type gas extraction apparatus is employed to measure oxygen in a silicon sample. A double graphite crucible is first heated, in the absence of the sample or a flux metal, to extract oxygen therein. The flux metal is then added to the crucib... | 01/31/1989 |
