| 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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| 02/26/1991 | US4996082 Sealed cavity semiconductor pressure transducers and method of producing the same |
| 02/26/1991 | US4995953 Forming cavities |
| 02/26/1991 | US4995266 Differential pressure transmitter |
| 02/26/1991 | US4995265 Degradation and contamination compensated tuning fork quartz monometer, and method to compensate for tuning quartz degradation and contamination |
| 02/26/1991 | US4995263 Tuning fork quartz manometer |
| 02/20/1991 | EP0266365B1 Circuitry for generating an output signal non-linearly dependent on temperature |
| 02/19/1991 | US4994781 Pressure sensing transducer employing piezoresistive elements on sapphire |
| 02/19/1991 | US4993267 Electronic transducer |
| 02/19/1991 | US4993266 Semiconductor pressure transducer |
| 02/19/1991 | US4993265 Protected pressure sensor and method of making |
| 02/19/1991 | US4993143 Method of making a semiconductive structure useful as a pressure sensor |
| 02/19/1991 | CA1280291C Differential pressure transducer |
| 02/13/1991 | EP0412293A2 Procedure for adapting the sensitivity of a sensor system for detecting the intensity of rain in a control system for wiping intervals of a wind-screen wiper drive, and arrangement for carrying out the procedure |
| 02/13/1991 | EP0412100A1 Capacitive pressure sensor. |
| 02/13/1991 | CN1011619B Arrangement for measuring internal inertia pressure of double screw extrude |
| 02/12/1991 | US4991925 Spectrum shifting optical switch |
| 02/12/1991 | US4991590 Fiber optic intravascular blood pressure transducer |
| 02/12/1991 | US4991404 Vacuum pressure monitoring system |
| 02/12/1991 | US4991283 Sensor elements in multilayer ceramic tape structures |
| 02/07/1991 | DE3925579A1 Circuit for differential capacitor contg. two partial capacitances - contains three controlled switches and sample-and-hold circuit |
| 02/06/1991 | EP0411088A1 Formation of microstructures with removal of liquid by freezing and sublimation. |
| 02/05/1991 | US4991153 Vibration type transducer |
| 02/05/1991 | CA1279772C Dual diaphragm differential pressure transducer |
| 02/04/1991 | WO1991002218A1 A solid-state transducer based dynamic fluid flow sensing system |
| 02/04/1991 | CA2064590A1 Solid-state transducer based dynamic fluid sensing system |
| 01/30/1991 | EP0410910A1 Membrane deformation measuring device |
| 01/30/1991 | EP0410014A1 Pressure sensor and method for the calibration of pressure sensors |
| 01/30/1991 | EP0409827A1 Pressure sensor. |
| 01/30/1991 | CA2020669A1 Sensing systems |
| 01/29/1991 | WO1991001681A1 Transducer with conductive polymer bridge |
| 01/29/1991 | US4987783 Sensor and transducer apparatus |
| 01/29/1991 | US4987782 Capacitive pressure transducer system |
| 01/29/1991 | CA2063266A1 Transducer with conductive polymer bridge |
| 01/24/1991 | DE4021424A1 Low pressure sensor for gas or liq. - has pressure membrane carried monolithically in frame |
| 01/23/1991 | EP0409213A2 Amplifiying compensation circuit for semiconductor pressure sensor |
| 01/23/1991 | CA2021766A1 Pressure sensor and method for calibrating pressure sensors |
| 01/22/1991 | US4986861 Through glass bonded to metal oxide layer |
| 01/22/1991 | US4986671 Three-parameter optical fiber sensor and system |
| 01/22/1991 | US4986131 Semiconductor strain detector |
| 01/22/1991 | US4986129 Pressure sensor |
| 01/22/1991 | US4986127 Multi-functional sensor |
| 01/22/1991 | US4986126 Electronic |
| 01/22/1991 | CA1279204C Gas pressure gage |
| 01/16/1991 | EP0407587A1 Pressure sensor |
| 01/16/1991 | EP0407413A1 Manometric or dynamometric device. |
| 01/16/1991 | EP0407397A1 Pressure transducer for determining the pressure in the combustion chamber of an internal combustion engine. |
| 01/15/1991 | USRE33518 Pressure transducer assembly |
| 01/15/1991 | US4984468 Pressure sensor and method for manufacturing it |
| 01/15/1991 | US4984467 Transducer for pressures and/or vibrations and method for manufacturing thereof |
| 01/15/1991 | US4984466 Semiconductor pressure sensor |
| 01/10/1991 | DE3937641A1 Pressure sensor with piezoelectric and temp. compensation elements - enables temp. compensation without knowing temp. dependency of piezoelectric voltage |
| 01/09/1991 | CN2069171U Load cell of dioxide silicon isolation |
| 01/08/1991 | US4984046 Silicon pressure sensor having a resistance layer of polycrystalline semicondutor |
| 01/08/1991 | US4983824 Variable gap |
| 01/08/1991 | US4982608 High-pressure transducer |
| 01/08/1991 | US4982607 Composite cylinder for a mini oil pressure transducer |
| 01/03/1991 | DE3919059A1 Pressure sensor esp. for vehicle engine compartment - has sensor resistances on membrane in sensor substrate base body |
| 01/02/1991 | EP0405633A2 Pressure/Differential measuring device |
| 01/02/1991 | EP0405070A2 Flattened pressure sensor |
| 01/02/1991 | CN1011074B Capacitance pressure sensor |
| 01/02/1991 | CN1011073B Flangeless transmitter coupling to flange adapter union |
| 01/01/1991 | US4982351 Low cost high precision sensor |
| 12/27/1990 | WO1990015976A1 Single diaphragm transducer with multiple sensing elements |
| 12/27/1990 | WO1990015975A1 Extended measurement capability transmitter having shared overpressure protection means |
| 12/27/1990 | EP0404673A1 Membrane sensor with concentration of deformations |
| 12/27/1990 | EP0403926A1 Ski boot |
| 12/19/1990 | EP0403257A2 High pressure transducer |
| 12/19/1990 | EP0403256A2 Making an O-Ring/Back-up Seal for High Pressure Transducers |
| 12/19/1990 | EP0403254A2 Hermetic pressure sensor |
| 12/19/1990 | EP0402818A1 Pressure sensor |
| 12/18/1990 | US4978421 Masking one side of a wafer, removal of undoped silicon to expose doped silicon membrane on the opposite side |
| 12/16/1990 | CA2056391A1 Extended measurement capability transmitter having shared overpressure protection means |
| 12/13/1990 | DE3918818A1 Pressure sensor with film resistance strain gauge - has ceramic plate with corrosion and abrasion resistant insulation cover plate |
| 12/12/1990 | EP0401635A2 Manufacturing method of a detector using resistance elements |
| 12/12/1990 | EP0401524A2 Pressure sensor for infusion conduits |
| 12/11/1990 | US4977480 Variable-capacitance type sensor and variable-capacitance type sensor system using the same |
| 12/11/1990 | US4977101 Monolithic pressure sensitive integrated circuit |
| 12/11/1990 | US4976844 Sealed, insulated structure for pressurized conditions |
| 12/11/1990 | US4976151 Method and device for detecting blocked condition in a tube of a liquid infusion pump |
| 12/05/1990 | EP0400939A2 Semiconductor sensor with vibrating element |
| 12/05/1990 | EP0400587A2 Pressure measuring device for fluids flowing in pipes |
| 12/05/1990 | EP0400165A1 Pressure sensor and method for its fabrication |
| 12/05/1990 | EP0400074A1 Protected pressure sensor. |
| 12/05/1990 | EP0216812B1 A measuring device |
| 12/04/1990 | US4975390 Piezoelectrical layer on diaphragm; measurment electrical resistance |
| 12/04/1990 | US4974596 Transducer with conductive polymer bridge |
| 11/30/1990 | CA2017704A1 Laminated semiconductor sensor with vibrating element and associated method and product |
| 11/29/1990 | DE4013887A1 Measuring pressure by capacitative transducer - electrically measuring change in capacity caused by pressure between conductive diaphragm and capacitor electrode |
| 11/28/1990 | CN1047420A Manufacture method and structure of monocrystalline-silicon pressure transducer |
| 11/27/1990 | US4974117 Dual diaphragm capacitive differential pressure transducer |
| 11/27/1990 | US4972717 Pressure transducer apparatus and method for making same |
| 11/27/1990 | US4972716 Semiconductor pressure converting device |
| 11/27/1990 | US4972579 Method of producing a ceramic pressure sensor |
| 11/20/1990 | US4972076 Solid state sensor with dual resonant vibratable members |
| 11/20/1990 | US4970898 Pressure transmitter with flame isolating plug |
| 11/15/1990 | DE4014543A1 Fluid pressure sensor esp. for controlling processes - has bore with deformable walls open to fluid and contg. floating pin |
| 11/14/1990 | EP0397392A2 Snap-fit construction low cost pressure sensing device |
| 11/14/1990 | EP0396755A1 Coned disk spring |
| 11/14/1990 | EP0342192B1 Optical force-measuring sensor |
| 11/13/1990 | US4970487 Pressure sensor |