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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 |
| 8104329 | Method and installation for determining rheological characteristics of a fluid, and corresponding identifying method The method comprises: causing a reference fluid (F2) having known rheological characteristics, and an unknown fluid (F1) to flow in parallel in a microchannel (126); identifying at leas... | 01/31/2012 |
| 7997121 | Milliwave melter monitoring system A milliwave melter monitoring system is presented that has a waveguide with a portion capable of contacting a molten material in a melter for use in measuring one or more properties of the molten material in a furnace under extreme environments. A receiver is config... | 08/16/2011 |
| 7908905 | Rheometer allowing direct visualization of continuous simple shear in non-newtonian fluid The present invention is directed to an improved rheometer which provides direct visualization, and to a rheometer that can be used in conjunction with shearing devices, such as rotational, torsional, sliding plate, and other type rheometers. ... | 03/22/2011 |
| 7900503 | Method of high throughput viscometry An apparatus and method for measuring or comparing rheological properties of fluid samples in parallel is disclosed. The apparatus includes a plurality of sensing elements which are comprised of flow channels and reservoirs in fluid communication. The channels provi... | 03/08/2011 |
| 7810379 | High temperature microelectromechanical (MEM) devices A microelectromechanical (MEM) device per the present invention comprises a semiconductor wafer—typically an SOI wafer, a substrate, and a high temperature bond which bonds the wafer to the substrate to form a composite structure. Portions of the composite structu... | 10/12/2010 |
| 7784329 | Piezo-rheometric measuring cell and corresponding piezo-rheometer The invention relates to a piezo-rheometric measuring cell for shear or compression measurement, essentially comprising two sample holder plates, with the sample for analysis between the same in solid, liquid or intermediate form, piezoelectric ceramic elements on t... | 08/31/2010 |
| 7526945 | System and method for measuring extensional rheology of bodily fluids The rheological apparatus contains a first mating surface and a second mating surface. A housing moveably orients the first mating surface to the second mating surface. A biasing member contained within the housing is connected to the first mating surface. The biasi... | 05/05/2009 |
| 7437912 | Device and method for sensing rheological properties of a fluid A method and device for assessing rheological properties of a fluid, including lubricity and viscosity. The invention utilizes a tube into which the fluid is introduced, and relies on tracking the movement of the fluid through the tube either alone or with one or mo... | 10/21/2008 |
| 7389677 | Measuring method and device for liquid crystal viscosity coefficient In a measuring method for determining values of viscosity coefficients of a liquid crystal by fitting Ericksen-Leslie theoretical values to measured response characteristics, in the first step, ON response characteristics of a liquid crystal cell 10 with homo... | 06/24/2008 |
| 7383731 | Deep-fry oil quality sensor A cooking oil quality sensing apparatus and system includes an acoustic wave sensor composed of one or more acoustic wave transducers configured upon a piezoelectric substrate such that when the acoustic wave sensor is in contact with cooking oil, the sensor generat... | 06/10/2008 |
| 7371601 | Piezoresistive sensing structure A technique for manufacturing a piezoresistive sensing structure includes a number of process steps. Initially, a piezoresistive element is implanted into a first side of an assembly that includes a semiconductor material. A passivation layer is then formed on the f... | 05/13/2008 |
| 7368728 | Ionization source for mass spectrometry analysis A new ionization source named Surface Activated Chemical Ionization (SACI) has been discovered and used to improve the sensitivity of the mass spectrometer. According to this invention the ionization chamber of a mass spectrometer is heated and contains a physical n... | 05/06/2008 |
| 7361524 | Method of manufacturing floating structure A method of manufacturing a floating structure capable of providing increased device yield. The method includes: a) forming an insulation film, a predetermined area of which is removed, between a first substrate and a second substrate; and b) forming a floating stru... | 04/22/2008 |
| 7361306 | Device and method for measuring coagulation time and platelet activity The present invention refers to a novel device for measuring coagulation time and platelet activity wherein the patient can measure his or her coagulation time and platelet activity without the aid of medical professionals due to the fact that this device is fully a... | 04/22/2008 |
| 7353696 | Apparatus for measuring methanol concentration An apparatus for measuring a methanol concentration is provided. The apparatus is located in a pipe which supplies liquid fuel to the anode of a direct liquid feed fuel cell, and may include a vertical supporting beam located in the pipe; a horizontal plate located ... | 04/08/2008 |
| 7350402 | Method and apparatus for determination of medical diagnostics utilizing biological fluids A method for measuring changes in the composition of fluids, for medical diagnostics or quality control of fluids, comprising: One) placing a drop of fluid upon a quartz crystal; Two) generating ultrasonic vibratio... | 04/01/2008 |
| 7350403 | Method and apparatus for determination of food quality and authenticity A method for analysis of a multi-component fluid is provided based on the features of the dynamics of the self-organization processes in drying drops. An electro-acoustic resonator is utilized, with a drop of multi-component fluid placed on one end of the resonator.... | 04/01/2008 |
| 7331469 | Vibratory separator with automatically adjustable beach A vibratory separator having a basket for supporting screen apparatus for treating material, the basket pivotably mounted on a base, vibratory apparatus connected to the basket for vibrating the basket, the material forming a pool on the screen apparatus, and a beac... | 02/19/2008 |
| 7328604 | Microelectromechanical (MEM) fluid health sensing device and fabrication method A microelectromechanical (MEM) fluid health sensing device comprises a viscosity sensor which provides an output that varies with the viscosity of a fluid in which it is immersed, and at least one other sensor which provides an output that varies with another predet... | 02/12/2008 |
| 7329932 | Microelectromechanical (MEM) viscosity sensor and method A MEM viscosity sensor comprises a substrate, with first and second support structures affixed to the substrate and spaced-apart. A compliant member is affixed to the support structures such that it is suspended above and can flex vertically with respect to the subs... | 02/12/2008 |
| 7323887 | Conductivity sensor and manufacturing method therefor A contacting-type conductivity sensor includes a plurality of electrodes disposed on a distal surface of a substrate. The substrate includes a plurality of vias through which electrical interconnection to the electrodes is accomplished. The conductivity sensor can e... | 01/29/2008 |
| 7313945 | Cantilevers for sensing fluid properties A system for sensing a property of a fluid comprises a fluid channel operable to receive the fluid therein, a flexible arm having a free end positioned within at least a portion of the fluid channel, a fluid actuator disposed sufficiently close to the flexible arm s... | 01/01/2008 |
| 7293450 | Oil quality sensor structure for permanent applications An oil quality sensor system comprise an acoustic wave viscosity and an etch rate sensor. The etch rate sensor system includes a piezoelectric substrate and one or more sensing layers configured upon the piezoelectric substrate. A layer of gold is generally configur... | 11/13/2007 |
| 7291310 | Microsystem for determining clotting time of blood and low-cost, single-use device for use therein A microsystem for determining clotting time of blood and a low-cost, single-use device for use therein are provided wherein the device has no moving parts or expensive optical sensors or magnets. The device includes a microfluidic channel and a microsensor at least ... | 11/06/2007 |
| 7287415 | Microelectromechanical system (MEMS) viscosity sensor for fluid health monitoring Embodiments of the present invention are directed to a MEM viscosity sensor that is configured to be operated submerged in a liquid. The MEMS viscosity sensor comprises a MEMS variable capacitor comprising a plurality of capacitor plates capable of being submerged i... | 10/30/2007 |
| 7287431 | Wireless oil filter sensor A wireless oil filter sensing system includes an oil filter and a sensing mechanism that is connectable to the oil filter. The sensing mechanism includes one or more acoustic wave sensing elements and at least one antenna that communicate with the acoustic wave sens... | 10/30/2007 |
| 7284413 | Method and apparatus for measuring viscosity An apparatus for measuring the viscosity of a fluid having a first rigid member extending from a body of semiconductor material and provided with a first conductive path and a second resiliently flexible member provided with a second conductive path and arranged in ... | 10/23/2007 |
| 7281413 | Acoustic method for determining the viscosity and/or surface tension of a liquid The present invention comprises a noncontact method for measuring viscosity and/or surface tension information of a liquid in a liquid containment structure. The steps of the method include exciting a surface of the liquid with an excitation burst of acoustic energy... | 10/16/2007 |
| 7281414 | Apparatus, a method, and measuring sensors for scanning states of engine oil The present invention relates to an apparatus, a method, and a sensor for scanning engine oil of a vehicle. An apparatus for scanning engine oil according to an exemplary embodiment of the present invention includes an oil property measuring part for measuring physi... | 10/16/2007 |
| 7278540 | Adjustable basket vibratory separator A vibratory separator having a base, a basket movably mounted on the base and for supporting screen apparatus for treating material introduced into the vibratory separator, the basket on a base and pivotable with respect thereto, vibratory apparatus connected to the... | 10/09/2007 |
| 7275419 | Rotation rheometer of viscosimeter A rotational rheometer or viscometer has a measuring motor for driving a measuring shaft which carries a measuring system, particularly a measuring head supported by a shaft portion, which may be contacted with a substance to be examined. Measuring data are introduc... | 10/02/2007 |
| 7267009 | Multiple-mode acoustic wave sensor A multiple-mode acoustic wave sensor apparatus includes an acoustic wave device comprising a piezoelectric substrate and at least one electrode on the substrate. When such sensor is used in a wireless configuration, a plurality of antennas can be configured on the s... | 09/11/2007 |
| 7260982 | Method and device for detecting the entry of fuel into the lubricating oil of an internal combustion engine A process for enabling the detection of an entry of fuel into the lubricating oil of an internal combustion engine can be implemented relatively simply. The process measures a value representative of the volume of lubricating oil in the internal combustion engine an... | 08/28/2007 |
| 7261861 | Hemostasis analyzer and method A method and device for blood hemostasis analysis is disclosed. A blood sample is displaced to reach a resonant state. The resonant frequency of the blood sample is determined before, during and after a hemostasis process. The changes in the resonant frequency of th... | 08/28/2007 |
| 7254008 | Integrated capacitive microfluidic sensors method and apparatus A microfluidic device and method for capacitive sensing. The device includes a fluid channel including an inlet at a first end and an outlet at a second end, a cavity region coupled to the fluid channel, and a polymer based membrane coupled between the fluid channel... | 08/07/2007 |
| 7234216 | Method for support control in machine tools Method for support control in machine tools where it is controlled whether an object is arranged correctly on a support surface in the machine tool, where a duct system is used which ends in the support surface, and conducts a medium, and can be pressurized, the fin... | 06/26/2007 |
| 7228728 | Method for determining rheological parameters of a fluid The inventive method uses the ultrasound Doppler method (UVP) in order to determine a local velocity profile perpendicular to a line for a fluid which flows through said line, carrying suspended or emulsified particles. The wall shear stress of said fluid is measure... | 06/12/2007 |
| 7228727 | Lubricity measurement using MEMS A system that facilitates in situ determination of lubricity in a fluid comprises a multi-element sensor positioned within a machine, wherein the multi-element sensor obtains data regarding a plurality of parameters of a fluid. A component calculates lubricity of th... | 06/12/2007 |
| 7227147 | Process for monitoring and controlling nitrating processes with the aid of an online spectrometer A process for monitoring and/or controlling a nitrating process, having the following steps: measuring inline infrared spectra of nitric acid content in a reaction mixture stream downstream of the nitration reaction, preferably nea... | 06/05/2007 |
| 7219536 | System and method to determine oil quality utilizing a single multi-function surface acoustic wave sensor A method and system for detecting oil quality. The quality of engine oil can be determined utilizing an acoustic wave sensor to obtain viscosity and corrosivity data associated with the engine oil. The acoustic wave sensor is coated with a material that selectively ... | 05/22/2007 |
