Patents
Patents for G01L 9 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means (16,396)
11/1993
11/11/1993CA2111676A1 Device for measuring pression, notably for the installation of infusion
11/10/1993EP0568781A1 A semiconductor pressure sensor assembly having an improved package structure
11/10/1993EP0419611B1 Process for producing a sensor for the measurement of compressive forces
11/09/1993US5260692 Control device for fluid containers of flexible material
11/09/1993US5260665 In-line fluid monitor system and method
11/09/1993US5259248 Integrated multisensor and static and differential pressure transmitter and plant system using the integrated multisensor
11/09/1993US5259247 Sensor
11/03/1993EP0567482A1 Pressure sensor.
11/03/1993CN2145374Y Digital anti-shake pressure gauge
11/03/1993CN2145373Y Electronic distant-reading manometer with digital display
11/02/1993US5257547 Amplified pressure transducer
11/02/1993US5257546 Pressure measuring sensor
11/02/1993US5257542 Sensor for a capacitance pressure gauge
10/1993
10/28/1993WO1993021652A1 Drift correction for fiberoptic pressure sensors
10/28/1993WO1993021506A1 Modular transmitter with flame arresting header
10/28/1993DE4213857A1 Vorrichtung zum Messen von Druck und Differenzdruck A device for measuring of pressure and differential pressure
10/28/1993CA2118009A1 Modular transmitter with flame arresting header
10/27/1993EP0567075A2 A method for producing semiconductor device
10/27/1993EP0567056A1 Pressure sensor
10/26/1993US5257210 Processor for processing sensor signals to obtain a desired transfer behavior
10/26/1993US5255427 Ceramic hollow bodies and method of manufacturing such bodies
10/20/1993EP0566160A1 Bridge type measuring device with output compensating circuit
10/20/1993CN1077531A Modular transmitter with flame arresting header
10/19/1993US5253532 Temperature compensated pressure transducer with digital output for low voltage power supply
10/14/1993WO1993020422A1 Micromachined sensor device
10/14/1993WO1993020417A1 Temperature compensation for a force or pressure sensor
10/14/1993WO1993020413A1 Load cell
10/14/1993DE4311298A1 Pressure detecting circuit for semiconductor pressure sensor - has differential amplifier stage with zero drift compensation by temp.-dependent difference between base-emitter voltages
10/12/1993US5252826 Differential pressure utilizing opto-reflective sensor
10/09/1993CA2065576A1 Method of determining well bore fluid gradients
10/07/1993DE4223455A1 Semiconductor pressure sensor, e.g. for measuring atmospheric pressure in motor vehicle - has vacuum chamber and diffused resistance device on silicon substrates with protective layer
10/07/1993DE4210818A1 Evaluation circuit for piezoresistive pressure sensor in IC engine - adjusts supply voltage of bridge contg. nonlinear element eg diode or current source, and that of operational amplifier to have preset working point.
10/06/1993EP0564418A1 Electronic differential pressure switch with commutator and for several calibration values
10/06/1993EP0563477A1 Touch screen sensing apparatus
10/06/1993CN1077024A Load cell
10/05/1993US5249469 Pressure gauge
10/05/1993US5249468 Pressure sensor for detecting the pressure in the combustion chamber of internal combustion engines
10/03/1993WO1993020423A1 A device with bonded conductive and insulating substrates and method therefor
10/03/1993CA2102506A1 A device with bonded conductive and insulating substrates and method therefore
09/1993
09/29/1993EP0562031A1 Microdevice for sensing or applying a force and method of making the same
09/29/1993EP0561976A1 Temperature compensation of transducers
09/29/1993EP0316343B1 Media isolated pressure sensors
09/28/1993CA1322472C Isolator apparatus
09/26/1993CA2091395A1 Method of and apparatus for touch-input computer and related display employing touch force location external to the display
09/23/1993DE4308666A1 Pressure sensor e.g. for vehicle engine combustion chamber - contains movable structure acting on piezoelectric transducer which is in series with dielectric having capacitance of opposite temp. characteristic wrt transducer
09/23/1993DE4307753A1 Semiconducting stress or load sensing device - contains reference voltage source for compensating temp. coefficient of strain gauge bridge circuit connected to operational amplifier circuit
09/23/1993DE4209081A1 Contact pin cooperating with flat electrode of capacitive press measuring cell - has contact surface provided by beaded edge at end of cylindrical bottom section of sheet metal contact pin
09/23/1993DE4207951A1 Glass-silicon pressure or differential pressure sensor - contains glass and silicon@ plates, metal coating for forming capacitor electrode and measurement chamber inlet of smaller cross=section than inlet feed lines
09/22/1993EP0561397A2 A pressure sensor
09/21/1993US5247171 Drift correction for fiberoptic pressure sensors
09/16/1993WO1993018382A1 Soi actuators and microsensors
09/16/1993WO1993018381A1 Pressure sensor and method
09/16/1993CA2130677A1 Soi actuators and microsensors
09/14/1993US5245504 Methodology for manufacturing hinged diaphragms for semiconductor sensors
09/08/1993EP0417156B1 A pressure gauge
09/08/1993EP0409827B1 Pressure sensor
09/07/1993US5242863 Silicon diaphragm piezoresistive pressure sensor and fabrication method of the same
09/07/1993US5241864 Double pinned sensor utilizing a tensile film
09/07/1993CA1321902C Transducer and sensor apparatus and method
09/07/1993CA1321891C Differential pressure detector
09/02/1993WO1993017440A1 Process for making an oblique-sided recess in a substrate
09/02/1993WO1993017313A1 Pressure difference sensor
09/02/1993DE4206675A1 Druckdifferenz-sensor Differential pressure sensor
09/02/1993DE4206174A1 Integrated sensor for pressure or acceleration measurement - is constructed exclusively from silicon@ in form of spring-mass system with errors due to differential thermal expansion eliminated
09/01/1993EP0557885A2 PWM sensor
09/01/1993EP0491808B1 Process and device for the production of an individual tooth replacement part
08/1993
08/25/1993EP0557220A1 Capacitive micro-sensor with lateral protection and method of manufacturing the same
08/25/1993EP0557219A1 Micro-capacitive sensor with reduced parasitic capacitance and manufacturing method
08/25/1993EP0557217A1 Capacitive micro-sensor with reduced parasitic capacitance and method of manufacturing the same
08/25/1993EP0557216A1 Pressure microsensor
08/25/1993EP0396755B1 Coned disk spring
08/24/1993CA1321483C Pressure transducer
08/18/1993EP0556009A2 Method of producing a buried boss diaphragm structure in silicon and product made thereby
08/18/1993EP0555968A1 Optical device and a method of manufacture thereof
08/18/1993CN1021847C Pressure transmitter with flame isolating plug
08/17/1993US5237632 Optical fibre coil assemblies
08/17/1993US5237285 Method and apparatus for capacitance temperature compensation and manufacturability in a dual plate capacitive pressure transmitter
08/10/1993US5235324 Detector for over-pressure inside a pipe and a pump fitted with such a detector
08/10/1993US5233875 Stable capacitive pressure transducer system
08/10/1993US5233867 Lever-operated dynamic fluid flow sensing system
08/05/1993WO1993015306A1 A subsurface well tool actuator
08/05/1993DE4303228A1 Pressure sensor, esp. for detecting liquid pressure - has hollow main body with divided pressure chamber, detection chamber sealed by metal membrane and filled with pressure transfer liquid
08/04/1993EP0553725A2 Apparatus and method of manufacture of pressure sensor having a laminated substrate
08/04/1993EP0537190A4 Piezoresistive pressure transducer
08/03/1993US5233329 Filter with hysteresis for trip point applications
08/03/1993US5231881 Digital pressure sensor with a pretensioned vibrating cord
08/03/1993US5231880 Pressure transducer assembly
08/03/1993CA1320847C Absolute pressure transducer and method for making same
07/1993
07/29/1993DE4219575A1 Encapsulated pressure sensing semiconducting device - contains sensor element with membrane in resin capsule with section removed to form membrane access window
07/28/1993EP0552884A2 Pressure transducer with quartz crystal
07/28/1993EP0424483B1 Pressure sensor
07/27/1993US5231508 Hall effect gauge with magnetically-sensitive variable-resistance element
07/27/1993US5231301 Semiconductor sensor with piezoresistors and improved electrostatic structures
07/27/1993US5230250 Capacitor and pressure transducer
07/22/1993WO1993014609A1 Optical vibration sensor
07/22/1993DE4201313A1 Press sensor for electrical or electronic circuit and/or controller - contains reversibly compressible packing material with compression dependent electrical conductivity
07/21/1993EP0552017A2 Semiconductor pressure sensor and method of manufacturing same
07/21/1993EP0551538A1 Charge amplifier
07/21/1993EP0164413B2 Pressure transducer
07/20/1993US5228344 Method of measuring pressures using a tuning fork crystal oscillator