| 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) |
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| 03/07/1990 | EP0356482A1 A sensor and transducer apparatus. |
| 03/06/1990 | US4906586 Suspended gate field effect semiconductor pressure transducer device |
| 03/06/1990 | US4905575 Solid state differential pressure sensor with overpressure stop and free edge construction |
| 03/06/1990 | US4905520 Pressure sensor |
| 02/28/1990 | EP0355373A2 Fluid-pressure detector |
| 02/27/1990 | US4904978 Mechanical sensor for high temperature environments |
| 02/27/1990 | US4903532 Electrostatic capacity type pressure detector |
| 02/22/1990 | WO1990001294A1 Miniaturized pressure sensor |
| 02/22/1990 | DE3844462A1 Anordnung zur messung des radialen druckes in seiherschneckenpressen Arrangement for the measurement of the radial pressure in seiherschneckenpressen |
| 02/20/1990 | US4903164 O-ring/back-up ring seal for high pressure transducers |
| 02/20/1990 | US4903000 Pressure sensor having means for electromagnetically shielding resistors |
| 02/14/1990 | EP0354479A2 Semiconductor pressure sensor |
| 02/14/1990 | EP0354229A1 Hydrophonic probe. |
| 02/13/1990 | US4901197 Sensor for capacitively measuring pressure in a gas |
| 02/13/1990 | US4901070 Pressure monitoring system with isolating means |
| 02/08/1990 | WO1990001153A1 Pressure sensor, its production method and hydraulic apparatus equipped with the pressure sensor |
| 02/07/1990 | EP0353880A2 Catheter assembly |
| 02/07/1990 | CN1039481A Mechanical transducer |
| 02/06/1990 | US4899046 Optical sensor of physical magnitude |
| 02/06/1990 | US4898035 Pressure sensor having sealing member for sealing housing interior with respect to external space |
| 01/31/1990 | EP0352773A2 Piezoresistive Si single crystal pressure transducer |
| 01/31/1990 | CN2052124U Mud pressure gauge with digital display |
| 01/30/1990 | US4897542 Optical pressure sensor |
| 01/30/1990 | US4897360 Annealing a chemically vapor-deposited film to control tensile strain |
| 01/25/1990 | WO1990000734A1 Mechanical transducer |
| 01/25/1990 | DE3920481A1 Method for encapsulating semiconductor sensors |
| 01/24/1990 | EP0352240A1 A very-high-pressure transducer, particularly for detecting the pressure of a hydraulic fluid |
| 01/24/1990 | EP0351701A2 Pressure transducer and its manufacturing process |
| 01/23/1990 | US4895026 Semiconductor pressure sensor |
| 01/17/1990 | EP0351254A1 Mechanical transducer |
| 01/17/1990 | EP0350638A2 Tactile sensor |
| 01/17/1990 | EP0350612A2 Measuring arrangement for establishing pressure and temperature |
| 01/16/1990 | US4894698 Field effect pressure sensor |
| 01/16/1990 | US4894635 Strain sensor |
| 01/16/1990 | CA1264419A1 Temperature compensated pressure transducer |
| 01/11/1990 | DE3823303A1 Circuit arrangement for monitoring the internal pressure of a motor vehicle tyre by means of a piezoresistive measuring bridge mounted on the wheel |
| 01/11/1990 | DE3823302A1 Switching arrangement for actuating a switch which is mounted on the wheel of a motor vehicle and is used to monitor the inside pressure of tyres |
| 01/10/1990 | EP0349633A1 Polysilicon thin film process |
| 01/10/1990 | CN2050976U Pressure signaller |
| 01/08/1990 | EP0288514A4 Fiber optic sensor apparatus. |
| 01/03/1990 | EP0349191A2 Powered respirators |
| 01/03/1990 | EP0348658A2 Thick film force or pressure transducer |
| 01/03/1990 | EP0348657A2 Force or pressure transducer |
| 01/03/1990 | EP0264388B1 Circuitry for measuring mechanical deformation, specially under pressure |
| 01/02/1990 | US4890498 Pressure sensor |
| 01/02/1990 | US4890497 In a control loop for process control |
| 12/28/1989 | WO1989012912A1 Stress conversion device and its production method |
| 12/28/1989 | DE3821547A1 Pressure measuring device |
| 12/28/1989 | DE3821546A1 Pressure measuring device |
| 12/28/1989 | DE3820878A1 Capacitive sensor element for the construction of mechanical-electrical transducers |
| 12/26/1989 | US4889590 Semiconductor pressure sensor means and method |
| 12/26/1989 | US4889524 Portable centrifuge apparatus |
| 12/26/1989 | US4888992 Absolute pressure transducer and method for making same |
| 12/26/1989 | US4888988 Silicon based mass airflow sensor and its fabrication method |
| 12/20/1989 | EP0347277A1 Interferometric sensor and its use in an interferometric system |
| 12/20/1989 | CN1038162A Vibrating type transducer and manufacturing process thereof |
| 12/19/1989 | US4888662 High pressure package for pressure transducers |
| 12/14/1989 | WO1989012235A1 Charge balanced feedback transmitter |
| 12/14/1989 | DE3918769A1 Semiconductor pressure sensor and method for its fabrication |
| 12/14/1989 | DE3901741A1 Pressure measuring device |
| 12/13/1989 | CN2049351U Silicon force sensing unit for rood-beam island construction |
| 12/12/1989 | US4886070 Method of in vivo calibration of a pressure sensor |
| 12/07/1989 | DE3818458A1 Device for the measurement of the pressure of liquid or gaseous media |
| 12/06/1989 | EP0344439A1 Sensor |
| 12/06/1989 | EP0110898B1 Transducer calibration system |
| 12/06/1989 | CN2048968U Oil pressure weight tester with electric sensor |
| 12/05/1989 | US4885621 Monolithic pressure sensitive integrated circuit |
| 12/05/1989 | US4884451 Fluid pressure measuring device with pressure attenuation |
| 12/05/1989 | US4884450 Sensor device |
| 11/30/1989 | WO1989011640A1 A pressure gauge |
| 11/30/1989 | WO1989011601A1 Coned disk spring |
| 11/30/1989 | WO1989011244A1 A device for chronic measurement of internal body pressure |
| 11/30/1989 | WO1989010545A3 Capacitive pressure sensor |
| 11/29/1989 | EP0343784A2 Method for fabricating a silicon force transducer |
| 11/28/1989 | US4883768 Multilayer, photolithography, masking |
| 11/23/1989 | EP0342274A1 Arrangement for reducing the piezo effects in a semiconductor material that contains at least one piezo effect-sensitive electric device, and method of making the same |
| 11/23/1989 | EP0342220A1 A pressure responsive potentiometer |
| 11/23/1989 | EP0342192A1 Optical force-measuring sensor. |
| 11/23/1989 | DE3816529A1 Pressure measuring device |
| 11/21/1989 | US4881410 Ultraminiature pressure sensor and method of making same |
| 11/15/1989 | EP0341964A2 Silicon micro sensor and manufacturing method therefor |
| 11/14/1989 | US4881056 Facedown-type semiconductor pressure sensor with spacer |
| 11/14/1989 | US4879903 Three part low cost sensor housing |
| 11/09/1989 | DE3814717A1 Apparatus for the detection of vibrations |
| 11/09/1989 | DE3153376C2 Device for gravimetric determination of the quantity of a fluid, especially of mineral oil products in a large tank |
| 11/08/1989 | EP0340904A2 Monolithic pressure sensitive integrated circuit and a process for manufacture thereof |
| 11/07/1989 | US4879627 Differential capacitive pressure sensor with over-pressure protection |
| 11/07/1989 | US4879439 Apparatus for controlling start up and stop down of a hydraulic pump |
| 11/07/1989 | US4878385 Differential pressure sensing apparatus |
| 11/02/1989 | WO1989010546A1 Capacitive pressure sensor |
| 11/02/1989 | WO1989010545A2 Capacitive pressure sensor |
| 11/02/1989 | EP0340022A1 Mechanical sensor for high temperature environments |
| 11/02/1989 | EP0339983A2 Movement transducer |
| 11/02/1989 | EP0339981A2 Laminated semiconductor sensor with overpressure protection |
| 11/02/1989 | EP0339741A2 Process of manufacturing a polycrystalline semiconductor resistance of silicon on a silicon substrate |
| 11/01/1989 | CN2047014U Silicon self-sealed pressure sensor |
| 10/31/1989 | US4878012 Charge balanced feedback transmitter |
| 10/31/1989 | US4876893 A base plate of dielectrics and coated with thin alloy film of nonmagnetic substance |
| 10/31/1989 | US4876892 Pressure sensor |
| 10/26/1989 | DE3912219A1 Method and device for digital pressure measurement |