Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 8186873 | Determination of thermal resistance using infrared thermography Various techniques are provided for determining thermal resistance values of building materials through the use of infrared cameras. In one example, an infrared camera may be used to capture one or more infrared images of a wall. Using temperatures obtained from the... | 05/29/2012 |
| 8136981 | Heat transfer evaluating apparatus Disclosed is a heat transfer evaluation apparatus of a nano-fluid including: a long pipe formed as a circular pipe; a rubber tube connected to one end of the long pipe to surround the outer surface of the long pipe; a short pipe communicated through the rubber tube;... | 03/20/2012 |
| 8083399 | Method for fabricating thermal effect standards A method for fabricating thermal effect standards includes providing an oven, placing at least one temperature sensor at measurement location in the oven, operating the oven, monitoring a temperature output of the at least one temperature sensor, providing at least ... | 12/27/2011 |
| 8042993 | Air-cooled power electronics service algorithm A method for determining the thermal efficiency of a heat sink for an electrical component includes determining an estimated temperature of the heat sink, determining an actual temperature of the heat sink, and determining a thermal efficiency of the heat sink based... | 10/25/2011 |
| 8042994 | Specific heat meter with improved accuracy The accuracy of instruments used to measure the specific heat of heat transfer fluids is limited by the accumulation of bubbles, debris or loose surface films on an active measurement surface. Accumulated bubbles, debris or loose film may be reduced or eliminated by... | 10/25/2011 |
| 7934868 | Thermal sensor and measurement device using the same A thermal sensor in which, when an object to be measured is a water-based liquid, attachment of air bubbles to the external surface of the sensor is reduced to improve measurement accuracy. The thermal sensor has a sensing element (21a) including a hea... | 05/03/2011 |
| 7854547 | Bidirectional and expandable heat flow measurement tool for units of air cooled electrical equipment A tool is disclosed, for measuring the important thermal characteristics of a unit of electronic equipment, which obtains air flow and temperature readings at both air inlet and air outlet openings of the unit without disturbing cable or wiring connections or otherw... | 12/21/2010 |
| 7841766 | Metal surface temperature measuring instrument A metal surface temperature measuring device includes: a container to contain a coolant; a measurement target; a heater to heat the measurement target; a moving mechanism for moving the measurement target; and a thermometer to measure the surface temperature of the ... | 11/30/2010 |
| 7726874 | Method and device for determining the capacity of a heat exchanger A method and arrangement for determining the capacity of a heat exchanger is provided. The effective heat transfer coefficient for the heat exchanger is calculated from the measured inlet and outlet temperatures of the product and the measured inlet and outlet tempe... | 06/01/2010 |
| 7712956 | Method and device for determining specific heat capacity The specific heat capacity (cp) of a medium is determined using a calorimeter with a reactor (1), a stirrer (3), a first thermostat for providing an inner heat balance, a second thermostat, means for providing an outer heat balance and a cen... | 05/11/2010 |
| 7690838 | Thermal properties measurement apparatus A thermal property measurement apparatus capable of directly measuring thermal conductivity distribution in a ROI within a target only by measuring the temperature distribution that already exists in the ROI without generating other temperature fields artificially. ... | 04/06/2010 |
| 7682071 | Measuring apparatus A measuring apparatus is provided. The measuring apparatus includes i) a point temperature sensor that has a tip and measures a temperature of an object, ii) a laser that heats the tip of the point temperature sensor by emitting a laser beam, iii) an optical member ... | 03/23/2010 |
| 7651261 | System and method for thermal inspection of parts A method of thermal inspection of a part having at least one internal cavity is provided. The method includes flowing a fluid through the at least one internal cavity. The method also includes measuring a temperature at one or more locations on the part over time. T... | 01/26/2010 |
| 7637654 | Specific heat measuring method and instrument In order to measure specific heat, the measurement time is very long and the instrument is very expensive. The specific heat may be calculated based on the thermal time constant obtained from the change of the sample temperature when the predetermined amount of samp... | 12/29/2009 |
| 7549790 | Measuring apparatus for thermal resistance of heat dissipating device A measuring apparatus for measuring the thermal resistance of a heat dissipating device, the heat dissipating device includes a fan and a heat sink. The measuring apparatus includes a base, and a fixing member. The base receives a heat element and the heat sink ther... | 06/23/2009 |
| 7549789 | Method and apparatus for thermographic nondestructive evaluation of an object A method and system for determining thermal diffusivity and porosity of an article are provided. The method comprises heating a surface of the article, capturing image data corresponding to an evolution of lateral heat flow from the surface of the article, applying ... | 06/23/2009 |
| 7470058 | Method and device for a thermoanalytical material analysis Substance analysis based upon observed reponse to excitation described herein. When a substance is subjected to an excitation and a response is observed, a relational evaluation is made based on the concept that the parameters of a mathematical model may be determin... | 12/30/2008 |
| 7445379 | Device for measuring heat transfer characteristics of fluid material A device includes a measuring assembly, a fluid pressure assembly, and a manometer. The measuring assembly includes a heating member defining a first contact surface, a cooling member defining a second contact surface facing the first contact surface, a platform, an... | 11/04/2008 |
| 7440852 | Stochastic analytical solution to quantify the earth's subsurface heat flow An analytical closed form solution to mean and variance in heat flow is obtained by solving the stochastic heat conduction equation incorporating randomness in the thermal conductivity. The method has a wide range of applications in quantifying the thermal state of ... | 10/21/2008 |
| RE40470 | Body function measuring apparatus Body function measuring apparatus which provides: (1) an indication of the body function being measured, and (2) a loose probe condition by determining that the difference between the rate of change of a first body function signal, developed by a first sensor in the... | 08/26/2008 |
| 7407325 | Method and apparatus for measuring thermophysical properties The present invention provides a method for measuring thermophysical properties that includes: rapid resistive self-heating of a specimen by using a heating current; emitting a light to the specimen heated by the rapid resistive self-heating of the specimen; measuri... | 08/05/2008 |
| 7399118 | Thermal gas flowmeter comprising a gas quality indicator The invention relates to a method and a device for measuring a gas consumption by means of a gas meter. A gas meter with thermal mass flow sensor for determining mass flow signals (SM) and with a calibration as energy meter for outputting energy value sig... | 07/15/2008 |
| 7377152 | Method and device for determining a characteristic value that is representative of the condition of a gas The invention relates to a device and methods for characterizating flowing substances, liquid or gas. The device includes: a transport duct with a heating or a cooling element; a temperature difference sensor having a temperature measurement cell downstream of the h... | 05/27/2008 |
| 7364354 | Method and system for measuring the thermal diffusivity The present invention concerns a method and a system for measuring the thermal diffusivity. Said method comprises the steps of: subjecting a surface region of an object to a modulated heating beam (3) while providing a signal (MLS) thereof, the heated spot or... | 04/29/2008 |
| 7362105 | Integrated microstructure sensor element for detecting thermodynamic variables of a fluid An integrated microstructure sensor element is proposed for detecting thermodynamic measured variables of a fluid. To that end, a supporting body, particularly a board or a wafer having at least one microstructured heating element in contact with the fluid during op... | 04/22/2008 |
| 7358606 | Apparatus to compensate for stress between heat spreader and thermal interface material A device and method identify and compensate for tensile stress due to heat-caused expansion and contraction between an integrated heat spreader and thermal interface material. This device and method change the shape of the integrated heat spreader based upon the ide... | 04/15/2008 |
| 7354269 | Electro-optical device for the photo-polymerization of composite material The invention relates to an electro-optical device for the photo-polymerization of composite material, and is used in particular in the dental field. The inventive device comprises a light source (2) which is defined by an LED or a group of LEDs. It comprises... | 04/08/2008 |
| 7338202 | Ultra-high temperature micro-electro-mechanical systems (MEMS)-based sensors Novel micro electro mechanical systems (MEMS)-based sensors for use in ultra-high temperature environments are disclosed. The MEMS-based sensors are derived from a class of polymer-derived ceramics selected from the group consisting of SiCN, SiBCN and SiAlCN. The ma... | 03/04/2008 |
| 7339143 | Expanding system using plasma discharge The present invention relates to an expansion system using a plasma discharge in which in which a charged electric energy is fast discharged, so that a high pressure is generated within liquid based on an impact wave, which can be used in various industrial fields a... | 03/04/2008 |
| 7329043 | Thermal properties testing apparatus and methods An apparatus for testing properties of a product comprising a thermal barrier layer comprises an ignition source, a test stand that extends a sample of the product over the ignition source, and a means for measuring thermal transfer across the sample. The apparatus ... | 02/12/2008 |
| 7325971 | Method and apparatus for locating hydrocarbon deposits A method and apparatus for locating hydrocarbon deposits includes temperature 16 sensor for measuring earth surface temperature at each of a plurality of locations, and a solar absorption sensor 14 for measuring the absorption coefficient of the earth'... | 02/05/2008 |
| 7316505 | Method of defining the emission coefficient of a surface to be heated A method of defining the emission coefficient of a surface to be heated by measuring the temperature of a heating surface and the flow of heat from the heating surface to a surface to be heated to derive a pair of values representative thereof and of selecting a pre... | 01/08/2008 |
| 7315767 | Impedance spectroscopy based systems and methods One aspect of the invention provides a device that non-invasively determines the concentration of a substance in a target. The device includes a first electrode, a measuring circuit, and a data processor. In one embodiment of the device, the first electrode can be e... | 01/01/2008 |
| 7313501 | Method and system for determining the location of a potential defect in a device based on a temperature profile According to one embodiment of the invention a method for determining the location of a potential defect in a device includes scanning a surface of the device with a temperature sensor while operating the device. The method also includes measuring a temperature of t... | 12/25/2007 |
| 7311264 | Method and device for the process regulation or control of thermal load changes of an obstruction-curved and/or thick-walled component through which a medium flows in a thermal system The novel method and device provide for process control—closed-loop control or open-loop control—for a thermal system with an obstruction-curved and/or thick-walled component through which a medium flows. The wall temperatures of the component are detected, the ... | 12/25/2007 |
| 7300203 | Non-contacting sensor multichip module with integral heat-sinks A sensor assembly having a housing including a first portion and a second portion. One of the portions of the housing includes a plurality of walls. The walls at least partially define a chamber. The assembly also includes a hinge connected to the first portion and ... | 11/27/2007 |
| 7299701 | Compressive fatigue and energy test apparatus and method for testing clutch plate friction materials The present invention presents a means for simultaneously testing the compressive strength and measuring the thermal energy dissipated by a given friction material during slip. The testing apparatus includes a rotatable flywheel that rotates a transmission reaction ... | 11/27/2007 |
| 7273316 | Device and method for thermogravimetrically testing the behavior of a solid material A method for thermogravimetrically testing the behavior of a solid material in the presence of a controlled gaseous atmosphere, characterized in that a plurality of samples (10) are placed in the presence of the gaseous atmosphere inside the same controlled a... | 09/25/2007 |
| 7261461 | Measuring and trimming circuit components embedded in micro-platforms There is described a method and sub-circuit to measure temperature coefficients (coefficient of variation of a measurable parameter of the component), by using a thermally-isolated silicon micro-platform with a mass of mono-crystalline silicon suspended from it. The... | 08/28/2007 |
| 7256058 | Device and method for package warp compensation in an integrated heat spreader A device and method for designing and manufacturing an integrated heat spreader so that the integrated heat spreader will have a flat surface on which to mount a heat sink after being assembled into a package and exposed to the heat of a die. This device and method ... | 08/14/2007 |