Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8186226 | Pressure sensor with on-board compensation The present disclosure relates generally to pressure sensors, and more particularly, to methods and apparatus for compensating pressure sensors for stress, temperature and/or other induced offsets and/or errors. In one illustrative embodiment, a pressure sensor may ... | 05/29/2012 |
| 8109148 | Pressure compensation unit for use in a pressure sensor A pressure compensation unit for use in a pressure sensor includes a housing which has at least one continuous channel, at least one opening being provided in a wall of the channel. The opening is connectable to a reference pressure chamber of the pressure sensor vi... | 02/07/2012 |
| 8082796 | Temperature extraction from a pressure sensor Circuits, methods, and systems to compensate pressure sensor readings for changes in temperature. An example measures temperature in a field-effect-transistor-based pressure sensor or micro-electromechanical system by measuring the device's threshold voltage. This t... | 12/27/2011 |
| 8069729 | Pressure gauge A pressure measuring device for measuring and/or monitoring the pressure of a measured medium. The pressure measuring device includes a sensor housing and a measurement transmitter, wherein assigned to the sensor housing is a pressure measuring cell with a pressure ... | 12/06/2011 |
| 8065918 | Air pressure sensor with temperature compensation An air pressure sensor that has a first conductive membrane configured for deflection in response to pressure differences between air at a reference pressure and air at a pressure to be sensed. The sensor also has a second conductive membrane configured for deflecti... | 11/29/2011 |
| 8033175 | Temperature compensation of a multivariable pressure transmitter A multivariable process fluid pressure transmitter includes an electronics module and a sensor module. The sensor module is coupled to the electronics module. A process fluid temperature sensor is coupled to the process fluid pressure transmitter. A differential pre... | 10/11/2011 |
| 8006564 | Pressure sensor with integrated thermal stabilization and method of using The present invention relates to a method of determining both pressures and temperatures in a high temperature environment. The present invention also relates to a method of determining temperatures about a pressure-sensing element using a bi-functional heater. In a... | 08/30/2011 |
| 7878067 | Temperature compensating pressure sensor A temperature compensating pressure sensor arrangement includes a capacitive pressure sensor having a substrate carrying CMOS layers. A conductive membrane is arranged on the substrate and defines a reference chamber such that capacitance changes resulting from disp... | 02/01/2011 |
| 7841238 | Pressure sensor with temperature compensation The invention provides for a pressure sensor with compensation for temperature variations. The sensor has CMOS layers deposited on a substrate, a conductive layer connected to the CMOS and a passivation layer deposited on the CMOS layers. The arrangement also includ... | 11/30/2010 |
| 7832277 | Wireless fluid pressure sensor A battery powered wireless fluid pressure sensor has a sealed chamber which can be vented to the outside atmosphere through a re-sealable reference port to allow a user to set the reference atmosphere inside the pressure sensor enabling the pressure sensor to provid... | 11/16/2010 |
| 7784351 | Field device with integrated temperature control A field device with integrated temperature control comprises a housing, a temperature sensor, a controller and a terminal block. The housing encloses internal components of the field device. The temperature sensor and the controller are located inside the housing. T... | 08/31/2010 |
| 7784350 | Downhole transducer with adjacent heater An apparatus comprising a downhole measurement tool, a transducer coupled to the measurement tool, the transducer having a body with an outer surface, and a heater disposed adjacent the outer surface to conduct heat from the heater to the outer surface. ... | 08/31/2010 |
| 7775116 | Pressure transducer with eccentric sleeve for adjusting the position of a pressure port This invention relates to a pressure measuring instrument, as well as a dedicated liner, especially for subsea use and adapted for coupling to a pressurized medium in a container or pipe through at leas tone opening therein and thus measure the pressure in the mediu... | 08/17/2010 |
| 7698950 | Pressure sensor assembly for measuring absolute pressure An absolute pressure transducer for outputting a signal indicative of an absolute pressure of a process to be measured is provided. The pressure transducer consists of a pressure-tight pressure port, which is connectable to the process, a housing accommodating press... | 04/20/2010 |
| 7694572 | Pressure-measuring device A pressure-measuring device has an initial pressure-measuring cell (1′) with a first thermal expansion coefficient (α1), a first housing (1), which is surrounded circumferentially by a second housing (1) having a second thermal expansi... | 04/13/2010 |
| 7690262 | Pressure sensor device including temperature sensor contained in common housing A pressure sensor device includes a temperature sensor mounted on a common housing composed of a resin head and a resin pipe both hermetically connected to each other. The pressure sensor device is mounted on, for example, on an intake manifold of an internal combus... | 04/06/2010 |
| 7677105 | Double-ended tuning fork type piezoelectric resonator and pressure sensor To provide a double-ended tuning fork type piezoelectric resonator that includes: a piezoelectric element having two arm portions disposed in parallel, a first supporting portion that support one ends of each of the arm portions, a second supporting portion that sup... | 03/16/2010 |
| 7587944 | Pressure sensor with integrated cooler and methods of using The present invention relates to a method of determining both pressures and temperatures in a high temperature environment. The present invention also relates to a method of determining temperatures about a pressure-sensing element using a bi-functional heater. In a... | 09/15/2009 |
| 7581447 | Temperature compensating pressure sensing arrangement The invention provides for a temperature compensating pressure sensing arrangement. The arrangement includes a substrate having sealed channels on which is deposited a CMOS layer, with a conductive layer and a passivation layer deposited on the CMOS layer. The arran... | 09/01/2009 |
| 7574919 | Integrated sensor including a pressure sensor and a temperature sensor An integrated sensor includes a pressure sensor integrated with a temperature sensor. When the sensor is attached to an object of attachment at a mounting position at an angle of θrq degrees with respect to an ideal attachment position, in which a centra... | 08/18/2009 |
| 7552642 | Pressure vessel testing A method for determining the maximum allowable working pressure of a microchannel device, particularly a diffusion-bonded, shim-based microchannel device operating at a temperature greater to or equal to a base material threshold temperature where significant creep ... | 06/30/2009 |
| 7464599 | Temperature compensating pressure sensor having active and reference membranes Provided is a temperature compensating pressure sensor. The sensor includes a silicon substrate having sealed channels on which is deposited a CMOS layer, and a conductive layer and a passivation layer deposited on the CMOS layer, the conductive layer representing a... | 12/16/2008 |
| 7464598 | Method of pressure sensing with a pressure sensor having a sensor membrane and a compensation membrane The invention provides for a method of sensing pressure with a pressure sensor having a sensor membrane and a compensation membrane. The pressure sensor also includes a power supply, a controller; and a charge amplifier, a charge injector and two switches arranged i... | 12/16/2008 |
| 7434470 | Combined pressure and temperature sensor A combined pressure and temperature sensor for recording the pressure and the temperature of a medium. A sensor element of the combined pressure and temperature sensor includes a through-hole to a diaphragm and a bore for accommodating a temperature sensor. The diap... | 10/14/2008 |
| 7415884 | Pressure sensor with integrated bi-functional heater and methods of using The present invention relates to a method of determining both pressures and temperatures in a high temperature environment. The present invention also relates to a method of determining temperatures about a pressure-sensing element using a bi-functional heater. In a... | 08/26/2008 |
| 7412893 | Redundant mechanical and electronic remote seal system A redundant pressure transmitter for redundantly measuring pressure of a process fluid comprises a transmitter housing, transmitter circuitry, a remote seal assembly including a first pressure sensor, and a second pressure sensor positioned in the transmitter housin... | 08/19/2008 |
| 7392687 | Method of calibrating zero offset of a pressure sensor A piezoresistive pressure sensor test sample is first provided, and a zero offset of the piezoresistive pressure sensor test sample is measured. Subsequently, a stress deviation corresponding to the zero offset is calculated. Thereafter, at least a piezoresistive pr... | 07/01/2008 |
| 7389686 | Methods and systems for determining air data parameters An air data system is described that includes a cone-shaped probe, a plurality of pressure transducers, and a processing device. The cone-shaped probe includes a first pressure port formed in a substantial tip of the probe and extending therethrough, and a plurality... | 06/24/2008 |
| 7389695 | Wireless fluid pressure sensor A battery powered wireless fluid pressure sensor has a sealed chamber which can be vented to the outside atmosphere through a re-sealable reference port to allow a user to set the reference atmosphere inside the pressure sensor enabling the pressure sensor to provid... | 06/24/2008 |
| 7377171 | Feedback circuit for radiation resistant transducer A velocity transducer or Velomitor® that can output electrical signals relating to vibration, despite the transducer being exposed to low levels of gamma-radiation, is disclosed. A DC feedback circuit, which sets up the input stage bias point, keeps the output bias... | 05/27/2008 |
| 7373266 | Sensor calibration using selectively disconnected temperature Calibration of a sensor circuit that includes a sensor, a temperature measurement circuit and a signal processing path. The sensor senses a physical parameter to be measured and generates an electrical sensor output signal representing the physical parameter. The te... | 05/13/2008 |
| 7364353 | Dynamic correction of sensed temperature A thermostat (10) for sensing the ambient temperature in an environment includes an enclosure (100) housing a temperature sensor (20) for sensing the temperature within the enclosure, a temperature display device (30), a liquid crystal di... | 04/29/2008 |
| 7363819 | High-pressure sensor housing which is simplified by means of a connection element (also emc) A device for measuring pressure, in particular for measuring high pressure, is provided, having a pressure sensor situated in a sensor housing, the sensor housing having a first sensor housing part provided with a pressure connecting piece and a second sensor housin... | 04/29/2008 |
| 7360438 | Advanced thick film load cell A load cell apparatus and method for forming the same. A load cell apparatus is configured to include a load cell housing and a modular strain gage element that is modularly assembled into the load cell housing. The load cell housing and the modular strain gage elem... | 04/22/2008 |
| 7360428 | Capacitive pressure measuring cell with a membrane bed The invention relates to a pressure measuring cell comprising a base body, a membrane that is connected to the base body, thus forming a measuring chamber. During operation, the membrane is subjected to a deflection which is dependent on a pressure that is to be mea... | 04/22/2008 |
| 7357032 | Pressure transmitter The invention relates to a pressure transmitter for an overload-proof pressure gauge, comprising a base body, a separating membrane disposed on a pressure-sensitive side of the pressure transmitter and subjectable to a pressure to be measured, a communicating chambe... | 04/15/2008 |
| 7347099 | Pressure transducer with external heater An improved pressure transducer is disclosed. The transducer includes a connector, an enclosure, a sensor portion, and an external heater disposed to heat the sensor portion. In some aspects, the sensor portion includes a sensor constructed from a brittle material a... | 03/25/2008 |
| 7342185 | Compression column load cell with compensation for off center loading errors Simple and inexpensive electrical compensation for off-axis and off-center loading sensitivity is possible in compression column load cells having a pair of compensation strain gages in series with each of the main strain gages in the load cell. The compensation gag... | 03/11/2008 |
| 7334483 | Thermal compensation of pressure measurements Methods and systems for thermal compensation of pressure measurements by a pressure gauge. Errors in pressure values are reduced by utilizing a predetermined correlation between the error in pressure measurements, due to temperature gradient in a pressure gauge, and... | 02/26/2008 |
| 7334480 | Dual membrane sensor for temperature compensated pressure sensing A pressure sensor that has a sensor membrane for exposure to fluid at a pressure to be sensed, and a compensation membrane sealed from the fluid at the pressure to be sensed. Associated circuitry connected to the sensor membrane converts deflection into an output si... | 02/26/2008 |
